Brocade Virtual ADX Server Load Balancing Guide (Supporting ADX v03.1.00) - Manual (Page 111)

Brocade Virtual ADX Server Load Balancing Guide 95
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SLB spoofing configuration and support
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Displaying hash bucket changes
You can display information about hash bucket changes on the Brocade Virtual ADX, through use of
the show server proxy keep-alive command. A truncated display is shown with the hash bucket
information.
Syntax: show server proxy keep-alive
Table 11 displays the output field description of show server proxy keep-alive command.
SLB spoofing configuration and support
Spoofing is the Brocade Virtual ADX application switch's ability to redirect reverse SLB traffic to the
interface from where the actual connection came through, regardless of any other route
configured.
When spoofing is enabled for a port on a virtual server, the Brocade Virtual ADX marks the input
interface of the connection. Later any response traffic for the session will be forwarded using this
information regardless of any other route (like next-hop route, policy based route, default route)
configured.
Configuration example:
Virtual ADX(config)#server virtual-name-or-ip vip1 10.10.1.100
Virtual ADX(config-vs-vip1)#port http
Virtual ADX(config-vs-vip1)#port http spoofing
Syntax: [no] port port spoofing
SLB spoofing is supported for all TCP traffic except for complex protocol ports (for example FTP,
MMS, RTSP and TFTP).
SLB spoofing is supported for UDP with the following limitations.
• UDP spoofing will not work if dns-udp-count-connection is configured.
• It is not supported for IMCP response traffic originated from the VIP.
TABLE 11 Output field descriptions for hash buckets of show server proxy keep-alive command
Field Description
Current serv is down The current server is down.
Serv exceed max-conn Not applicable
Lower BP wins The hash table is synchronized to all BPs. Where another BP assigns the
bucket to a different server, the lower BP wins.
Virtual ADX#show server proxy keep-alive
Keep-alive connection statistics:
...
Hash Bucket Change:
Current serv is down = 1 Serv exceed max-con = 0
Lower BP wins = 0
...
Virtual ADX#