Brocade Virtual ADX Server Load Balancing Guide (Supportin Uživatelský manuál

53-1003247-01July 2014®Brocade Virtual ADXServer Load Balancing GuideSupporting Brocade Virtual ADX version 03.1.00

x Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Chapter 6 Hot Standby High AvailabilityOverview . . . . . . . . . . . . . . . . . . . .

84 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Disabling or deleting VIPs and real ports2Table 9 describes the behavior of the Brocade

Brocade Virtual ADX Server Load Balancing Guide 8553-1003247-01Disabling or deleting VIPs and real ports2Enabling the port hold down timer for an indi

86 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Hash-based SLB with server persistence2The time remaining for the holddown state is dis

Brocade Virtual ADX Server Load Balancing Guide 8753-1003247-01Hash-based SLB with server persistence2If the client makes another request to the VIP,

88 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Hash-based SLB with server persistence2Figure 14 shows the persistent hash table for a

Brocade Virtual ADX Server Load Balancing Guide 8953-1003247-01Hash-based SLB with server persistence2Configuring the reassign threshold and durationT

90 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Hash-based SLB with server persistence2The Brocade Virtual ADX will stop reassigning pe

Brocade Virtual ADX Server Load Balancing Guide 9153-1003247-01Hash-based SLB with server persistence2The Brocade Virtual ADX now attempts to reassign

92 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Hash-based SLB with server persistence2Real server failureIf a real server fails, the B

Brocade Virtual ADX Server Load Balancing Guide 9353-1003247-01Hash-based SLB with server persistence2In the previous example, assume a client now mak

Brocade Virtual ADX Server Load Balancing Guide xi53-1003247-01Defining IPv6 real servers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

94 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Hash-based SLB with server persistence2Clearing the hit count for the persistent hash t

Brocade Virtual ADX Server Load Balancing Guide 9553-1003247-01SLB spoofing configuration and support2Displaying hash bucket changesYou can display in

96 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Policy-based SLB2Policy-based SLBPolicy-based server load balancing (PBSLB) is the Broc

Brocade Virtual ADX Server Load Balancing Guide 9753-1003247-01Policy-based SLB2• When a request from a different address is received, because it does

98 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Policy-based SLB2For the example shown in “Policy-based SLB configuration” on page 96,

Brocade Virtual ADX Server Load Balancing Guide 9953-1003247-01Policy-based SLB2Creating a PBSLB default groupTo create a PBSLB default group, enter a

100 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Policy-based SLB2The ipv4-addr variable specifies the IPv4 entry that you want to dele

Brocade Virtual ADX Server Load Balancing Guide 10153-1003247-01Policy-based SLB2For example, to configure real server rs1 in Figure 21 on page 96, en

102 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Policy-based SLB2Deleting existing PBSLB sessions By default, when a PBSLB server grou

Brocade Virtual ADX Server Load Balancing Guide 10353-1003247-01Policy-based SLB2Command line interfaceThere are three steps to enable this feature.1.

xii Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Displaying configuration information . . . . . . . . . . . . . . . . . . . . . . . .38

104 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Policy-based SLB2NOTEThe server pbslb tftp command must be configured before the serve

Brocade Virtual ADX Server Load Balancing Guide 10553-1003247-01Policy-based SLB2To display multiple entries in the policy list, enter a command such

106 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2Miscellaneous optionsChanging a real server’s IP addressThe Broc

Brocade Virtual ADX Server Load Balancing Guide 10753-1003247-01Miscellaneous options2Adding a descriptionYou can add a description to a real server o

108 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2Configuring a TCP MSS value at the virtual server port levelThe

Brocade Virtual ADX Server Load Balancing Guide 10953-1003247-01Miscellaneous options2Configuring TCP window scale option To configure the TCP window

110 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2Limiting the maximum number of TCP SYN requestsYou can limit the

Brocade Virtual ADX Server Load Balancing Guide 11153-1003247-01Miscellaneous options2The first command limits new TCP connections to the real server

112 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2Disabling port translationBy default, the Brocade Virtual ADX tr

Brocade Virtual ADX Server Load Balancing Guide 11353-1003247-01Miscellaneous options2Including the server client port in hash calculationsWhen there

Brocade Virtual ADX Server Load Balancing Guide xiii53-1003247-01PrefaceDocument conventionsThis section describes text formatting conventions and imp

114 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2Sending a TCP RST to a client that requests unavailable applicat

Brocade Virtual ADX Server Load Balancing Guide 11553-1003247-01Miscellaneous options2Disabling TCP RST message when a real server goes down during an

116 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2Optimized fast-path SLB processingYou can enable the Brocade Vir

Brocade Virtual ADX Server Load Balancing Guide 11753-1003247-01Miscellaneous options2To disable TCP fast aging and use the 1- to 2- minute aging time

118 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2Enabling SYN ACK threshold The SYN ACK threshold specifies the n

Brocade Virtual ADX Server Load Balancing Guide 11953-1003247-01Miscellaneous options2Configuring a host rangeIf you want to use the Unlimited VIP fea

120 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2• Allow "TCP only" or "UDP only" port defini

Brocade Virtual ADX Server Load Balancing Guide 12153-1003247-01Miscellaneous options2Enabling normal UDP aging for DNS and RADIUSBy default, the Broc

122 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2Virtual ADX(config)#server virtual-name-or-ip v1Virtual ADX(conf

Brocade Virtual ADX Server Load Balancing Guide 12353-1003247-01Miscellaneous options2NOTECPU utilization is not collected for every packet but every

xiv Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Command syntax conventionsNotes, cautions, and warningsThe following notices and state

124 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2VIP route health injectionVIP route health injection (RHI) allow

Brocade Virtual ADX Server Load Balancing Guide 12553-1003247-01Miscellaneous options2percentage threshold is not configured), then the VIP port will

126 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2For IPv6, enter commands similar to the following.Virtual ADX(co

Brocade Virtual ADX Server Load Balancing Guide 12753-1003247-01Miscellaneous options2NOTEWhere VIP hosts are classified as healthy, the Brocade Virtu

128 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2Defining the health of a VIP port globallyTo globally define the

Brocade Virtual ADX Server Load Balancing Guide 12953-1003247-01Miscellaneous options2NOTEIf a VIP port is not bound to any real server ports, it will

130 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2If you configure a vip-route-mask-length as “96” then when this

Brocade Virtual ADX Server Load Balancing Guide 13153-1003247-01Miscellaneous options2The following examples display how the output from the show ip r

132 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2VIP RHI and high availability topologies• Hot Standby topology -

Brocade Virtual ADX Server Load Balancing Guide 13353-1003247-01Miscellaneous options2The following snap shot of the show ipv6 route command was taken

Brocade Virtual ADX Server Load Balancing Guide xv53-1003247-01Brocade resourcesTo get up-to-the-minute information, go to http://my.brocade.com to re

134 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options24. Set the VIP, bind VIP ports to real server ports, and enable

Brocade Virtual ADX Server Load Balancing Guide 13553-1003247-01Miscellaneous options2server port 21tcpserver port 80tcpserver port 53udpserver port 1

136 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2server real Web8 10.60.1.47port 8601!server real Web9 10.60.1.48

Brocade Virtual ADX Server Load Balancing Guide 13753-1003247-01Miscellaneous options2!vlan 1 name DEFAULT-VLAN by port!vlan 10 by portuntagged ethe 1

138 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2tcpserver port 53udpserver port 161udpserver port 25tcpserver po

Brocade Virtual ADX Server Load Balancing Guide 13953-1003247-01Miscellaneous options2!server real Web9 10.60.1.48port 8601!server real Web10 10.60.1.

140 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2vlan 1 name DEFAULT-VLAN by port!vlan 10 by portuntagged ethe 1r

Brocade Virtual ADX Server Load Balancing Guide 14153-1003247-01Miscellaneous options2Site 1 Brocade Virtual ADX in primary mode and Site 2 Brocade Vi

142 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2server port 25tcpserver port 443tcpserver port 8601tcp!!server r

Brocade Virtual ADX Server Load Balancing Guide 14353-1003247-01Miscellaneous options2server remote-name rem1 10.80.1.40port 8601port ftpport smtpport

xvi Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Document feedback• Brocade Supplemental Support augments your existing OEM support con

144 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2untagged ethe 2router-interface ve 2!vlan 30 by portuntagged eth

Brocade Virtual ADX Server Load Balancing Guide 14553-1003247-01Miscellaneous options2port 8601protocol httpprotocol http url "HEAD /"interv

146 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2healthck Web9-8601-chk tcpdest-ip 10.60.1.48port 8601protocol ht

Brocade Virtual ADX Server Load Balancing Guide 14753-1003247-01Miscellaneous options2udpserver port 25tcpserver port 443tcpserver port 8601tcp!!!serv

148 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options2port 8601 healthck Web7-chk!server real Web8 10.60.1.47port 8601

Brocade Virtual ADX Server Load Balancing Guide 14953-1003247-01Miscellaneous options2port snmpport ftpbind http rs1 http rs2 httpbind dns rs1 dns rs2

150 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Application-specific SLB considerations2Application-specific SLB considerationsRTSP se

Brocade Virtual ADX Server Load Balancing Guide 15153-1003247-01Show and debug commands2Show and debug commandsRefer to Appendix B, “SLB Show and Debu

152 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Displaying the BP distribution2

Brocade Virtual ADX Server Load Balancing Guide 15353-1003247-01Chapter3Stateless Server Load BalancingOverviewThis chapter describes server load bala

Brocade Virtual ADX Server Load Balancing Guide 153-1003247-01Chapter1Features Brocade Virtual ADX Supported FeaturesThe Brocade Virtual ADX supports

154 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Stateless TCP and UDP ports3NOTEThe Direct Server Return feature also allows server re

Brocade Virtual ADX Server Load Balancing Guide 15553-1003247-01Stateless TCP and UDP ports3If client 10.161.1.88’s Web browser sent the request from

156 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Stateless TCP and UDP ports3Syntax: [no] port tcp/udp-portnum statelessThe tcp/udp-por

Brocade Virtual ADX Server Load Balancing Guide 15753-1003247-01Stateless TCP and UDP ports3The tcp/udp-port variable specifies the application port y

158 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Stateless TCP and UDP ports3• Connections originating from real server ports other tha

Brocade Virtual ADX Server Load Balancing Guide 15953-1003247-01Chapter4Health ChecksHealth checks overviewThe Brocade Virtual ADX uses Layer 3, Layer

160 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 3 health checks4Table 13 summarizes the Layer 3 health checks.Disabling Layer 3

Brocade Virtual ADX Server Load Balancing Guide 16153-1003247-01Layer 4 health checks4Modifying the ping interval and ping retriesThe Brocade Virtual

162 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 4 health checks4• UDP health check – The Brocade Virtual ADX sends a UDP packet

Brocade Virtual ADX Server Load Balancing Guide 16353-1003247-01Layer 4 health checks4Table 14 describes the Layer 4 health check types performance an

2 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Brocade Virtual ADX Supported Features1Advanced networking with support for static and d

164 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 4 health checks4Server response threshold health checkThe Brocade Virtual ADX di

Brocade Virtual ADX Server Load Balancing Guide 16553-1003247-01Layer 4 health checks4To display configuration information and statistics for the real

166 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 health checks4• The Current Appl RTT field displays in microseconds the curren

Brocade Virtual ADX Server Load Balancing Guide 16753-1003247-01Layer 7 health checks4• “RADIUS” on page 174• “RTSP” on page 174• “SMTP” on page 175•

168 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 health checks4DNSThe Brocade Virtual ADX performs one or both of the following

Brocade Virtual ADX Server Load Balancing Guide 16953-1003247-01Layer 7 health checks4bind dns linux dns rs1 dns!endNOTEIf the addr_query or zone has

170 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 health checks4HTTP (content verification)The Brocade Virtual ADX sends HTTP GE

Brocade Virtual ADX Server Load Balancing Guide 17153-1003247-01Layer 7 health checks4IMAP4The Brocade Virtual ADX waits for a message from the IMAP4

172 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 health checks4Authenticated bondingIf a username and password are configured,

Brocade Virtual ADX Server Load Balancing Guide 17353-1003247-01Layer 7 health checks4NNTPThe Brocade Virtual ADX waits for a message from the NNTP se

Brocade Virtual ADX Server Load Balancing Guide 353-1003247-01Feature summary1Feature summaryThe following tables lists the supported features and rel

174 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 health checks4RADIUSThe Brocade Virtual ADX sends an authentication request wi

Brocade Virtual ADX Server Load Balancing Guide 17553-1003247-01Layer 7 health checks4SMTPThe Brocade Virtual ADX waits for a message from the SMTP se

176 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 health checks4SSL (simple)The Brocade Virtual ADX sends an SSL client hello wi

Brocade Virtual ADX Server Load Balancing Guide 17753-1003247-01Layer 7 health checks4NOTEThe Brocade Virtual ADX uses its own management IP address o

178 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 health checks4HTTPChanging HTTP keepalive method, value, and status codesThe B

Brocade Virtual ADX Server Load Balancing Guide 17953-1003247-01Layer 7 health checks4DNSEnabling recursive DNS health checks By default, a Layer 7 he

180 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 health checks4RADIUSConfiguring RADIUS health check valuesYou can define the R

Brocade Virtual ADX Server Load Balancing Guide 18153-1003247-01Layer 7 health checks4Syntax: [no] port {ldap | ldaps | port-num} password stringThe s

182 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 health checks4Configuring Boolean LDAP health checksTo configure a Boolean LDA

Brocade Virtual ADX Server Load Balancing Guide 18353-1003247-01Layer 7 health checks4SSL interface: ssl_read_data return error !!!ssl_receive_data bu

Copyright © 2014 Brocade Communications Systems, Inc. All Rights Reserved.ADX, AnyIO, Brocade, Brocade Assurance, the B-wing symbol, DCX, Fabric OS, I

4 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Feature summary1High Availability Hot Standby configuration Brocade Virtual ADX Server

184 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Server and application port states4Syntax: [no] tcp keepalive protocol TCP-portThe pro

Brocade Virtual ADX Server Load Balancing Guide 18553-1003247-01Server and application port states4Application port statesTable 16 lists the applicati

186 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Server and application port states4Displaying real server state informationTo display

Brocade Virtual ADX Server Load Balancing Guide 18753-1003247-01Port profiles and attributes4Displaying virtual server state informationTo display vir

188 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Port profiles and attributes4Configuring a port profileFor an application port not kno

Brocade Virtual ADX Server Load Balancing Guide 18953-1003247-01Port profiles and attributes4Adding a port and specifying its typeBy adding a port, yo

190 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Port profiles and attributes4Keepalive port By default, the Brocade Virtual ADX bases

Brocade Virtual ADX Server Load Balancing Guide 19153-1003247-01Port profiles and attributes4You also can change port attributes locally, on the real

192 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Port profiles and attributes4Overriding the global TCP or UDP ageThe TCP and UDP ages

Brocade Virtual ADX Server Load Balancing Guide 19353-1003247-01Port policy4To change the smooth factor for an application port, enter a command such

Brocade Virtual ADX Server Load Balancing Guide 553-1003247-01Feature summary1High Availability Additional variations, IPv4 to IPv6 gateway high avai

194 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Port policy44. Configure a keepalive interval under a port policy.Virtual ADX(config-p

Brocade Virtual ADX Server Load Balancing Guide 19553-1003247-01Port policy4Binding the policyAfter the policy is configured, return to the configurat

196 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Port policy4Port Policy pp2 is bound to real server rs3 port 8080 and real server rs4

Brocade Virtual ADX Server Load Balancing Guide 19753-1003247-01Port policy4After configuring the policy, bind it to a real server port. (Refer to “Bi

198 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Element health checks4Element health checksIntroductionThe Brocade Virtual ADX allows

Brocade Virtual ADX Server Load Balancing Guide 19953-1003247-01Element health checks4These commands change the CLI to the configuration level for an

200 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Element health checks4This command begins configuration of the element-action expressi

Brocade Virtual ADX Server Load Balancing Guide 20153-1003247-01Element health checks4This command specifies a port whose health-check mechanism you w

202 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Element health checks4verification is contained in a matching list that is attached to

Brocade Virtual ADX Server Load Balancing Guide 20353-1003247-01Element health checks4Virtual ADX(config-hc-check4)#protocol ssl content-match m1Virtu

6 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Feature summary1

204 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Element health checks4Changing the health-check typeFor TCP application ports, you can

Brocade Virtual ADX Server Load Balancing Guide 20553-1003247-01Element health checks4The l4-check command configures the Brocade Virtual ADX to use t

206 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Element health checks4Displaying health-check policies and their statusTo display a li

Brocade Virtual ADX Server Load Balancing Guide 20753-1003247-01Element health checks4Displaying health-check policy statisticsTo display health-check

208 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Health check with content match4Health check with content matchContent match for HTTPC

Brocade Virtual ADX Server Load Balancing Guide 20953-1003247-01Health check with content match4NOTEThe HTTP page file size returned by the server sho

210 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Health check with content match4The default command specifies what happens if none of

Brocade Virtual ADX Server Load Balancing Guide 21153-1003247-01Health check with content match4In this example, the port http content-match m4 comman

212 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Health check with content match4The following commands configure a port profile for po

Brocade Virtual ADX Server Load Balancing Guide 21353-1003247-01Health check with content match4Using a scripted health check in a health-check policy

Brocade Virtual ADX Server Load Balancing Guide 753-1003247-01Chapter2Server Load BalancingOverviewThe Brocade Virtual ADX Application Delivery Switch

214 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Health check with content match4Scripted health check enhancement on real servers When

Brocade Virtual ADX Server Load Balancing Guide 21553-1003247-01Health check with content match4The match-list-name variable defines the name of the m

216 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Boolean health checks4Boolean health checksBoolean health-check policiesYou can config

Brocade Virtual ADX Server Load Balancing Guide 21753-1003247-01Boolean health checks4Follow the steps given below to use a health-check policy.1. Con

218 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Boolean health checks4The address 00e0.5208.dd8e is the MAC address of Link3's ac

Brocade Virtual ADX Server Load Balancing Guide 21953-1003247-01Miscellaneous health check settings4Miscellaneous health check settingsBasing an alias

220 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous health check settings4Basing a port’s health on the health of another po

Brocade Virtual ADX Server Load Balancing Guide 22153-1003247-01Miscellaneous health check settings4NOTEIt is possible to take a service down without

222 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous health check settings4Globally disabling all health-check policiesYou ca

Brocade Virtual ADX Server Load Balancing Guide 22353-1003247-01Miscellaneous health check settings4FIGURE 24 Health check of remote server – learned

8 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Overview2In Figure 1, an application administrator has established a web site www.exampl

224 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous health check settings4Syntax: [no] server identify-server-by-ipHealth ch

Brocade Virtual ADX Server Load Balancing Guide 22553-1003247-01Miscellaneous health check settings4Minimum healthy real servers under VIP portThe min

226 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous health check settings4OverviewThe Brocade Virtual ADX uses the server sl

Brocade Virtual ADX Server Load Balancing Guide 22753-1003247-01Miscellaneous health check settings4• At 21 seconds,the Brocade Virtual ADX allows a m

228 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous health check settings4When a port on a real server becomes active, the B

Brocade Virtual ADX Server Load Balancing Guide 22953-1003247-01Miscellaneous health check settings4• From 30 seconds to 40 seconds, the Brocade Virtu

230 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous health check settings4Syntax: slow-start list-id rate1 interval1 rate2 i

Brocade Virtual ADX Server Load Balancing Guide 23153-1003247-01Miscellaneous health check settings4Using the slow-start list defined above, the two g

232 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous health check settings4The graph on the right shows how the maximum numbe

Brocade Virtual ADX Server Load Balancing Guide 23353-1003247-01Miscellaneous health check settings4To globally re-enable slow-start, enter a command

Brocade Virtual ADX Server Load Balancing Guide 953-1003247-01Overview2Weighted Round Robin predictorLike the Round Robin predictor, the Weighted Roun

234 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous health check settings4Enhanced server bringupEnhanced Server Bringup inc

Brocade Virtual ADX Server Load Balancing Guide 23553-1003247-01Sample show commands4The Brocade Virtual ADX now tracks the health status of port 80.

236 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Sample show commands4NOTEThe log messages do not distinguish between Layer 4 and Layer

Brocade Virtual ADX Server Load Balancing Guide 23753-1003247-01Sample show commands4For this change to take effect, you must save the change to the s

238 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Sample show commands4When the number of available sessions drops below the value speci

Brocade Virtual ADX Server Load Balancing Guide 23953-1003247-01Sample show commands4Clearing statistics counters for sessions that aged out randomlyI

240 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Sample show commands4For DNS and RADIUS UDP load balancing, the age value does not fol

Brocade Virtual ADX Server Load Balancing Guide 24153-1003247-01Sample show commands4The time value in this example is in the format for devices on wh

242 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Sample show commands4

Brocade Virtual ADX Server Load Balancing Guide 24353-1003247-01Chapter5Layer 7 Content SwitchingOverviewCSW enables Layer 7 application content based

10 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Overview2For BP21. The first request is sent to Server1.2. The second request is sent t

244 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 content switching5• Support for persisting requests to servers, along with sim

Brocade Virtual ADX Server Load Balancing Guide 24553-1003247-01Layer 7 content switching5Brocade Virtual ADX will not run the server load balance pre

246 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 content switching5This example creates a rule called r1 that matches if an inc

Brocade Virtual ADX Server Load Balancing Guide 24753-1003247-01Layer 7 content switching5HTTP header rulesHTTP header rules cause the Brocade Virtual

248 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 content switching5XML tag rulesXML tag rules cause the Brocade Virtual ADX to

Brocade Virtual ADX Server Load Balancing Guide 24953-1003247-01Layer 7 content switching5Case-insensitive match for content switchingWith Case-Insens

250 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 content switching5CSW policiesA policy specifies the action to take when a rul

Brocade Virtual ADX Server Load Balancing Guide 25153-1003247-01Layer 7 content switching5NOTEThe real server ID range is limited to 1024-1+the maximu

252 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 content switching5The hash-to--bucket persist method is illustrated in the fol

Brocade Virtual ADX Server Load Balancing Guide 25353-1003247-01Layer 7 content switching5The persist-method variable specifies which of the following

Brocade Virtual ADX Server Load Balancing Guide 1153-1003247-01Overview2If you set the weight so that your fastest server gets 50 percent of the conne

254 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 content switching5By default, the format of the Syslog message is as follows.s

Brocade Virtual ADX Server Load Balancing Guide 25553-1003247-01Layer 7 content switching5Damaging a cookie Cookie damage consists of altering the coo

256 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 content switching5Configuring Rewrite request-deleteHTTP URL Rewrite allows th

Brocade Virtual ADX Server Load Balancing Guide 25753-1003247-01Layer 7 content switching5In this case, "-sample" is the deleted string that

258 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 content switching5The URL prefix "/abc" is matched, offset 0 is at t

Brocade Virtual ADX Server Load Balancing Guide 25953-1003247-01Layer 7 content switching5Example Original HTTP request:GET /abc/xyz/default_index.htm

260 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 content switching5\r\nExample Rewritten HTTP request:GET /abc/xyz/index.html H

Brocade Virtual ADX Server Load Balancing Guide 26153-1003247-01Layer 7 content switching5The highlighted URLs in the following two HTTP request messa

262 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 content switching5The highlighted URLs in the following two HTTP request messa

Brocade Virtual ADX Server Load Balancing Guide 26353-1003247-01Layer 7 content switching5Syntax: match rule-name rewrite request-replace matched-stri

12 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Overview2Connection assignments with enhanced weighted predictor for enhanced weighted

264 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 content switching5The old-string variable defines the string to be replaced, i

Brocade Virtual ADX Server Load Balancing Guide 26553-1003247-01Layer 7 content switching5HTTP redirect status code The Brocade Virtual ADX can be con

266 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Sample configurations5Offset 0 points to "\r", which is the next byte after

Brocade Virtual ADX Server Load Balancing Guide 26753-1003247-01Sample configurations5CSW topologyFigure 30 shows a simple CSW network topology.FIGURE

268 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Sample configurations5Creating a policy with HTTP URL RewriteTo define a CSW rule and

Brocade Virtual ADX Server Load Balancing Guide 26953-1003247-01Sample configurations5NOTEFor more information about offsets, refer to “Explanation of

270 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Sample configurations5Enabling content switchingTo enable content switching, follow th

Brocade Virtual ADX Server Load Balancing Guide 27153-1003247-01Layer 7 content switching on HTTP response5Layer 7 content switching on HTTP responseT

272 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Layer 7 content switching on HTTP response5Creating a CSW rule specifying the header r

Brocade Virtual ADX Server Load Balancing Guide 27353-1003247-01Using multiple cookies under virtual server port5In this configuration, the Brocade Vi

Brocade Virtual ADX Server Load Balancing Guide 1353-1003247-01Overview2Dynamic weighted predictorThe Brocade Virtual ADX provides a dynamic weighted

274 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Using multiple cookies under virtual server port5NOTESpoofing can be configured with t

Brocade Virtual ADX Server Load Balancing Guide 27553-1003247-01Server passive cookie persistence5ExampleThe Brocade Virtual ADX does cookie switching

276 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Server passive cookie persistence5together with the real server that is responsible fo

Brocade Virtual ADX Server Load Balancing Guide 27753-1003247-01Server passive cookie persistence5• “Creating a CSW rule to match the client request”•

278 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Server passive cookie persistence5Once the offset point is set by the persistence-stri

Brocade Virtual ADX Server Load Balancing Guide 27953-1003247-01Server and server port persistence with CSW nested rules53. The Client clicks on the l

280 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Server and server port persistence with CSW nested rules5Also, the current CSW support

Brocade Virtual ADX Server Load Balancing Guide 28153-1003247-01Server and server port persistence with CSW nested rules5Usage exampleThe customer nee

282 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Displaying CSW information5Displaying CSW informationDisplaying header informationTo d

Brocade Virtual ADX Server Load Balancing Guide 28353-1003247-01Displaying CSW information5Displaying CSW rule informationTo display information about

Brocade Virtual ADX Server Load Balancing Guide iii53-1003247-01ContentsPrefaceDocument conventions. . . . . . . . . . . . . . . . . . . . . . . . . .

14 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Overview2If the SNMP-weight indicates that your fastest server gets 50 percent of the c

284 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Displaying CSW information5To display detailed information for a specified rule, enter

Brocade Virtual ADX Server Load Balancing Guide 28553-1003247-01Displaying CSW information5Displaying CSW policy informationTo display information abo

286 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Displaying CSW information5To display detailed information about a policy, enter a com

Brocade Virtual ADX Server Load Balancing Guide 28753-1003247-01Displaying CSW information5Displaying the statistics for all HTTP content rewritesYou

288 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Displaying CSW information5Displaying Layer 7 switching statistics To display Layer 7

Brocade Virtual ADX Server Load Balancing Guide 28953-1003247-01Usage guidelines5Usage guidelinesWhen you define an offset or negative offset value to

290 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous Layer 7 switching configurations5The offset variable defines the distanc

Brocade Virtual ADX Server Load Balancing Guide 29153-1003247-01Miscellaneous Layer 7 switching configurations5The default TCP window size is 8000 byt

292 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous Layer 7 switching configurations5clients that originally created the con

Brocade Virtual ADX Server Load Balancing Guide 29353-1003247-01Miscellaneous Layer 7 switching configurations5This feature works only when Content Sw

Brocade Virtual ADX Server Load Balancing Guide 1553-1003247-01Overview2Application port groupsApplication groups enhance the sticky connections metho

294 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous Layer 7 switching configurations5Displaying transactions and connections

Brocade Virtual ADX Server Load Balancing Guide 29553-1003247-01Miscellaneous Layer 7 switching configurations5Layer 7 CSW pseudo stack client-side re

296 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous Layer 7 switching configurations5Displaying the Layer 7 CSW client-side

Brocade Virtual ADX Server Load Balancing Guide 29753-1003247-01Miscellaneous Layer 7 switching configurations5Layer 7 CSW pseudo stack server-side TC

298 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Setting up SSL session ID switching5The fields described in Table 34 provide statistic

Brocade Virtual ADX Server Load Balancing Guide 29953-1003247-01Setting up SSL session ID switching5SSL session ID workflowFigure 33 illustrates how t

300 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Setting up SSL session ID switching5FIGURE 34 How the Brocade Virtual ADX uses an SSL

Brocade Virtual ADX Server Load Balancing Guide 30153-1003247-01Setting up SSL session ID switching5Configuration ExampleConfiguring the real servers

302 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Command reference5Adjusting the maximum number of session_id-to-real-server associatio

Brocade Virtual ADX Server Load Balancing Guide 30353-1003247-01Command reference5rewrite request-insert Use the rewrite request-insert option in the

16 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Overview2The Brocade Virtual ADX switches all subsequent connections to S2 to ensure th

304 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Command reference5

Brocade Virtual ADX Server Load Balancing Guide 30553-1003247-01Chapters the 6Hot Standby High AvailabilityOverviewThis chapter describes the Hot Stan

306 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Overview6Hot Standby HA protocol operationsFigure 35 illustrates a typical Hot Standby

Brocade Virtual ADX Server Load Balancing Guide 30753-1003247-01Hot Standby HA configuration modes6When the entire synchronization process is complete

308 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Hot Standby HA Configuration Considerations6Promiscuous mode with shared MAC optionWhe

Brocade Virtual ADX Server Load Balancing Guide 30953-1003247-01Configuring standard Hot Standby HA6NOTEYou must use a dedicated port for the HA sync

310 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Configuring standard Hot Standby HA6Virtual ADX-B#write memory.Write startup-config in

Brocade Virtual ADX Server Load Balancing Guide 31153-1003247-01Configuring standard Hot Standby HA6Now Brocade Virtual ADX B comes up with Brocade Vi

312 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Additional configuration variations6Additional configuration variationsThis section pr

Brocade Virtual ADX Server Load Balancing Guide 31353-1003247-01Additional configuration variations6Figure 37 shows a configuration with the VIP and s

Brocade Virtual ADX Server Load Balancing Guide 1753-1003247-01Overview2Figure 3 shows an example of a Brocade Virtual ADX deployed in an L2 DSR confi

314 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Configuring additional HA parameters6Source-NAT in Hot StandbyFigure 38 shows a config

Brocade Virtual ADX Server Load Balancing Guide 31553-1003247-01Configuring additional HA parameters6Configuring a backup group IDHot Standby HA redun

316 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Configuring additional HA parameters6NOTEThe backup timer must have the same value on

Brocade Virtual ADX Server Load Balancing Guide 31753-1003247-01Configuring additional HA parameters6To enable this feature, enter the following comma

318 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Configuring additional HA parameters6Delayed failoverWith this feature configured, whe

Brocade Virtual ADX Server Load Balancing Guide 31953-1003247-01Configuring the forwarding of synchronizing messages6Configuring the forwarding of syn

320 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Hot-standby HA with routing protocols6NOTEManual alteration of the cost or the metric

Brocade Virtual ADX Server Load Balancing Guide 32153-1003247-01Hot-standby HA with routing protocols6Tie state of virtual link and HA physical link u

322 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Hot-standby HA with routing protocols6

Brocade Virtual ADX Server Load Balancing Guide 32353-1003247-01Chapter7SIP Server Load BalancingSIP overviewThe Session Initiation Protocol (SIP) is

18 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Configuring basic SLB2In the example, the Brocade Virtual ADX inspects and modifies pac

324 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01SIP overview7SIP packet flowFigure 40 demonstrates the basic operation of SIP; locatio

Brocade Virtual ADX Server Load Balancing Guide 32553-1003247-01SIP overview7SIP is based on an HTTP-like request-and-response transaction model. Each

326 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01SIP overview7The 200 OK message is routed back through the SIP proxy server to the Use

Brocade Virtual ADX Server Load Balancing Guide 32753-1003247-01SIP overview7SIP message headersThis section describes SIP message headers that you mi

328 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01SIP SLB and call persistence7SIP SLB and call persistenceFigure 41 shows an overview o

Brocade Virtual ADX Server Load Balancing Guide 32953-1003247-01SIP SLB and call persistence7• CANCEL• BYE• OPTIONSAdditionally, the following methods

330 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01SIP SLB and call persistence7Sample deployment topologiesVirtual ADX switches offer ap

Brocade Virtual ADX Server Load Balancing Guide 33153-1003247-01SIP SLB and call persistence7The proxy server receives the INVITE request and sends a

332 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01SIP SLB and call persistence7SIP server load balancing with non-DSR mode Figure 44 sho

Brocade Virtual ADX Server Load Balancing Guide 33353-1003247-01Configuring SIP SLB7SIP server health monitoringThere are two types of SIP servers of

Brocade Virtual ADX Server Load Balancing Guide 1953-1003247-01Configuring basic SLB2Configuration guidelinesThe following configuration guidelines sh

334 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Configuring SIP SLB7Configuring a SIP proxy server and enabling health checkComplete t

Brocade Virtual ADX Server Load Balancing Guide 33553-1003247-01Configuring SIP SLB7Configuring a SIP registrar server and enabling health checkComple

336 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Configuring SIP SLB73. Specify a registrar proxy server. Virtual ADX(config-rs-registr

Brocade Virtual ADX Server Load Balancing Guide 33753-1003247-01Configuring SIP SLB7Configuring a SIP virtual serverComplete the following steps to co

338 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Configuring SIP SLB7SIP SLB over UDP (stateful SLB mode)SIP SLB over UDP makes SIP sta

Brocade Virtual ADX Server Load Balancing Guide 33953-1003247-01Configuring SIP SLB7Additional SIP session-specific commandsThe following global confi

340 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Configuring SIP SLB7Show commands for displaying SIP sessionsNOTEThe show sip session

Brocade Virtual ADX Server Load Balancing Guide 34153-1003247-01Configuring SIP SLB7Syntax: show sip debug [parser | session| sip-transaction | udp-pr

342 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Configuring SIP SLB7Debugging SIP packet tracesThe show sip debug packet-trace command

Brocade Virtual ADX Server Load Balancing Guide 34353-1003247-01SIP SLB command reference7SIP SLB command referenceThis section describes the syntax a

20 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Configuring basic SLB2Virtual ADX(config-rs-Web2)#exitVirtual ADX(config)#server real W

344 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01SIP SLB command reference7 port sip dsr port sip sip-switch bind sip rs1 sip rs2 sip

Brocade Virtual ADX Server Load Balancing Guide 34553-1003247-01Chapter8IPv6 Support for Server Load BalancingOverviewNOTEThe Brocade Virtual ADX soft

346 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Defining IPv6 real servers8Defining IPv6 real serversVirtual ADX(config)#server real r

Brocade Virtual ADX Server Load Balancing Guide 34753-1003247-01VLAN and tagging definitions8VLAN and tagging definitionsVirtual ADX(config)#vlan 1 na

348 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01IPv6 configuration example8Example SLB session outputVirtual ADX# show session all 0Se

Brocade Virtual ADX Server Load Balancing Guide 34953-1003247-01AppendixAServer-specific Loopback ConfigurationsOverviewYou can configure loopback add

350 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Windows NTAWindows NTTo configure a loopback interface on Windows NT, you need to conf

Brocade Virtual ADX Server Load Balancing Guide 35153-1003247-01Windows NTA[Params.MS_TCPIP]AdapterSections=params.TCPIP.Adapter01DNS=yesDNSSuffixSear

352 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Windows NTA2. Delete the route that has the same address as the loopback interface.C:\

Brocade Virtual ADX Server Load Balancing Guide 35353-1003247-01Windows NTA3. Display the route table again to verify the results. In this example, Wi

Brocade Virtual ADX Server Load Balancing Guide 2153-1003247-01Changing the Load-Balancing Predictor Method2After you have defined the virtual server,

354 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Windows NTA7. Display the route table again to verify that the table contains the gate

Brocade Virtual ADX Server Load Balancing Guide 35553-1003247-01AppendixBSLB Show and Debug CommandsUsing show source-ipsource ip [real-server ip | al

356 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Using the show session all commandBUsing the show session all commandUse the show sess

Brocade Virtual ADX Server Load Balancing Guide 35753-1003247-01Using the source-ip-debug commandBUsing the source-ip-debug commandNOTEThis command sh

358 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Using the debug filter commandBConfiguring Capture BufferYou have to specify the size

Brocade Virtual ADX Server Load Balancing Guide 35953-1003247-01Using the debug filter commandBTable 36 displays the Ethernet Filter settings.Table 37

360 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Using the debug filter commandBPattern matching filter settingsYou can set up a filter

Brocade Virtual ADX Server Load Balancing Guide 36153-1003247-01Using the debug filter commandBSyntax: showUse reset at the filter ID configuration le

362 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Using the debug filter commandBYou can apply multiple filter IDs and specify an and/or

Brocade Virtual ADX Server Load Balancing Guide 36353-1003247-01Using the debug filter commandBStop Capturing ProcessYou can stop the packet capture u

22 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Changing the Load-Balancing Predictor Method2Selecting the round-robin parameter config

364 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Using the debug filter commandB!server virtual vs222 192.168.8.222port httpbind http r

Brocade Virtual ADX Server Load Balancing Guide 36553-1003247-01Using the debug filter commandBCheck ALL BPs to find the BP responsible for the test c

366 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Using the debug filter commandB0... ... = Reserved.1.. ... = Do not fragment..0. ...

Brocade Virtual ADX Server Load Balancing Guide 36753-1003247-01Using the debug filter commandBFragment offset(LSB 13 bits): 0 (0x00)Time to live: 128

368 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Displaying global Layer 4 Brocade Virtual ADX configurationBNow you can copy the file

Brocade Virtual ADX Server Load Balancing Guide 36953-1003247-01Displaying global Layer 4 Brocade Virtual ADX configurationBTable 40 lists the display

370 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Displaying global Layer 4 Brocade Virtual ADX configurationBGlobal TCP/UDP Parameters

Brocade Virtual ADX Server Load Balancing Guide 37153-1003247-01Displaying real server information and statisticsBDisplaying real server information a

372 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Displaying real server information and statisticsBState The state of the real server,

Brocade Virtual ADX Server Load Balancing Guide 37353-1003247-01Displaying real server information and statisticsBUsing the show server real detail co

Brocade Virtual ADX Server Load Balancing Guide 2353-1003247-01Changing the Load-Balancing Predictor Method2Assigning weights to the real serversWhen

374 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Displaying real server information and statisticsBTABLE 42 Real server detail informat

Brocade Virtual ADX Server Load Balancing Guide 37553-1003247-01Displaying real server information and statisticsBMs The master port state. This field

376 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Displaying real server information and statisticsBDisplaying real server keepalive sta

Brocade Virtual ADX Server Load Balancing Guide 37753-1003247-01Displaying virtual server information and statisticsBDisplaying virtual server informa

378 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Displaying virtual server information and statisticsBACL ID Displays the ID of the Ac

Brocade Virtual ADX Server Load Balancing Guide 37953-1003247-01Displaying virtual server information and statisticsBTCP/UDP Port Information and Stat

380 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Displaying a list of failed serversBDisplaying a list of failed serversUse show server

Brocade Virtual ADX Server Load Balancing Guide 38153-1003247-01Displaying port-binding informationBName: MyServer03 IP:192.168.160.93 State: EnabledP

382 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Displaying port-binding informationBSyntax: show server sessionTable 44 lists the disp

Brocade Virtual ADX Server Load Balancing Guide 38353-1003247-01Displaying port-binding informationBRandom-aged: total If the random threshold is conf

iv Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Changing the Load-Balancing Predictor Method . . . . . . . . . . . . . . . 21Configuri

24 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Changing the Load-Balancing Predictor Method2If you enter a value for response-time-wei

384 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Displaying packet traffic statisticsBDisplaying packet traffic statisticsIn theory, ea

Brocade Virtual ADX Server Load Balancing Guide 38553-1003247-01Displaying packet traffic statisticsBDrops Number of packets dropped by the Brocade Vi

386 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Displaying configuration informationBDisplaying configuration informationThis section

Brocade Virtual ADX Server Load Balancing Guide 38753-1003247-01Displaying configuration informationBAuto repeat of show command output The repeat-sho

388 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Displaying configuration informationB3. Under VIP, unbind the real server.4. Delete th

Brocade Virtual ADX Server Load Balancing Guide 38953-1003247-01AppendixCAcknowledgementsThis appendix presents the acknowledgements for portions of c

390 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Cryptographic softwareCCryptographic softwareThis product includes cryptographic softw

Brocade Virtual ADX Server Load Balancing Guide 39153-1003247-01Original SSLeay LicenseCThe license and distribution terms for any publicly available

392 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Original SSLeay LicenseC

Brocade Virtual ADX Server Load Balancing Guide 2553-1003247-01Changing the Load-Balancing Predictor Method2Dynamic-weighted directTo configure a dyna

26 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Changing the Load-Balancing Predictor Method2To smooth the samples out, the Brocade Vir

Brocade Virtual ADX Server Load Balancing Guide 2753-1003247-01Real server ports2Notice that the differences between the first and second samples are

28 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Real server ports2To disable all the application ports on a real server, enter the foll

Brocade Virtual ADX Server Load Balancing Guide 2953-1003247-01Real server ports2When you enable this feature, the Brocade Virtual ADX resets the conn

30 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Real server ports2Configuring a real port as TCP-only or UDP-onlyThis feature allows yo

Brocade Virtual ADX Server Load Balancing Guide 3153-1003247-01Source NAT2The tcp/udp-portnum variable specifies the application port you want to make

32 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Source NAT24. The Client sees the response coming from an unknown IP address (other tha

Brocade Virtual ADX Server Load Balancing Guide 3353-1003247-01Source NAT2Enabling source NAT globallySource NAT allows the Brocade Virtual ADX to use

Brocade Virtual ADX Server Load Balancing Guide v53-1003247-01Multiple port binding. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

34 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Source NAT2Configuring a shared source IP address for NATUse the server source-nat-ip c

Brocade Virtual ADX Server Load Balancing Guide 3553-1003247-01Source NAT2The source-ip variable is the source NAT IP address of the subnet with which

36 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Remote server2Remote serverIf the server is attached through one or more router hops, c

Brocade Virtual ADX Server Load Balancing Guide 3753-1003247-01Sticky and concurrent connections2Configuring stickiness based on client’s subnetThe st

38 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Sticky and concurrent connections2Allowing sticky portsYou can configure the Brocade Vi

Brocade Virtual ADX Server Load Balancing Guide 3953-1003247-01Sticky and concurrent connections2The multiplier-value variable is a numerical value in

40 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Sticky and concurrent connections2Enabling group stickyThe group sticky feature enables

Brocade Virtual ADX Server Load Balancing Guide 4153-1003247-01Sticky and concurrent connections2 port http port http url "HEAD /" port http

42 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Sticky and concurrent connections23. Identify what server the sticky session is pointed

Brocade Virtual ADX Server Load Balancing Guide 4353-1003247-01Application port grouping2Enabling a concurrent portThe concurrent feature allows a cli

vi Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Miscellaneous options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

44 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Application port grouping2Tracking primary portsYou can configure the Brocade Virtual A

Brocade Virtual ADX Server Load Balancing Guide 4553-1003247-01Application port grouping2NOTEEvery port in a track port group must be configured to be

46 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Application port grouping2Virtual ADX(config-real-server-r1) port 8082Virtual ADX(confi

Brocade Virtual ADX Server Load Balancing Guide 4753-1003247-01Application port grouping2TCP/UDP application groups configuration exampleNormally, whe

48 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Application port grouping2Figure 9 shows an example of servers configured with sticky p

Brocade Virtual ADX Server Load Balancing Guide 4953-1003247-01Primary and backup servers2NOTEBecause ports 23 and 69 track port 80, state information

50 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Primary and backup servers2In addition, this feature implements the primary and backup

Brocade Virtual ADX Server Load Balancing Guide 5153-1003247-01Primary and backup servers2remotely-attached servers (configured using the server remot

52 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Primary and backup servers2Configuration exampleThe example configures load-balancing s

Brocade Virtual ADX Server Load Balancing Guide 5353-1003247-01Primary and backup servers2Designating a real server port as a backupBackup functionali

Brocade Virtual ADX Server Load Balancing Guide vii53-1003247-01Show and debug commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .151

54 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Primary and backup servers2Syntax: [no] port port-name backupPer server based real serv

Brocade Virtual ADX Server Load Balancing Guide 5553-1003247-01Primary and backup servers2Slow start of the backup and the primary serversIf the serve

56 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Primary and backup servers2Example To configure the real server R2 as the backup of the

Brocade Virtual ADX Server Load Balancing Guide 5753-1003247-01Configuring Direct Server Return2Display the backup bindingsThis command is used to dis

58 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Configuring Direct Server Return2FIGURE 12 Two Brocade Virtual ADX devices in an DSR co

Brocade Virtual ADX Server Load Balancing Guide 5953-1003247-01Configuring Direct Server Return2Enabling L2 DSR on TCP/UDP portsTo configure the Broca

60 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Configuring Direct Server Return2Placing a session in delete queueDSR fast delete place

Brocade Virtual ADX Server Load Balancing Guide 6153-1003247-01Configuring Direct Server Return2To implement the configuration shown in Figure 13, con

62 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Configuring Direct Server Return2Virtual ADXA(config-rs-Real_Server_2)#exitVirtual ADXA

Brocade Virtual ADX Server Load Balancing Guide 6353-1003247-01Configuring Direct Server Return2Configuring L3 Direct Server ReturnIn an L3 DSR config

viii Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Port profiles and attributes. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

64 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Configuring Direct Server Return2Special handling by real serversL3 DSR requires specia

Brocade Virtual ADX Server Load Balancing Guide 6553-1003247-01Displaying server information2NOTETo make the above configuration work, the real server

66 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Port ranges2Defining a port rangePort ranges are identified by their names. A port rang

Brocade Virtual ADX Server Load Balancing Guide 6753-1003247-01Port ranges2Using a port range under a real server definitionYou can define port ranges

68 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Port ranges2Defining port profile for port rangeYou can define a profile for a port ran

Brocade Virtual ADX Server Load Balancing Guide 6953-1003247-01Multiple port binding2Using a start-index variable begins display at the record specifi

70 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Multiple port binding2To simplify an existing configuration that uses port aliases, you

Brocade Virtual ADX Server Load Balancing Guide 7153-1003247-01Multiple port binding2NOTEThe default port (a port the Brocade Virtual ADX automaticall

72 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Multiple port binding2Port aliasesWhen you associate a virtual port (VIP) with a real s

Brocade Virtual ADX Server Load Balancing Guide 7353-1003247-01Multiple port binding27. Bind the alias ports to the real servers on the virtual server

Brocade Virtual ADX Server Load Balancing Guide ix53-1003247-01Chapter 5 Layer 7 Content SwitchingOverview . . . . . . . . . . . . . . . . . . . . .

74 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Multiple port binding2Configuration rulesUse the following rules when configuring the B

Brocade Virtual ADX Server Load Balancing Guide 7553-1003247-01Multiple port binding2Configuration exampleTo implement the configuration described abo

76 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Multiple port binding2To display statistics for the separate real IP addresses, enter t

Brocade Virtual ADX Server Load Balancing Guide 7753-1003247-01Real server groups2Assume a configuration having two VIPs on the same real server with

78 Brocade Virtual ADX Server Load Balancing Guide53-1003247-01Real server groups2Real server group configuration is a three-step process: • First, yo

Brocade Virtual ADX Server Load Balancing Guide 7953-1003247-01Disabling or deleting VIPs and real ports2Binding a real server group to a virtual serv

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