User guide

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Last Resort Standby—The server will be put into STANDBY state. Unless all other servers
are out of services, this server will not be switch in. This will allow the last server to show a
different web page from others.
7.6 Add L7 Server
If setting up a Layer 7 farm, the add server screen will be similar to this:
Two options extra options are available:
Match Pattern
Pattern is anchored
Match Pattern:
This is the pattern that will need to match the client request data to access this server. It is in
extended regular expression format. In previous version, the pattern is restricted to 50 bytes
in length. From version 8.6 firmware, the match pattern length enlarged to 100 bytes. Please
refer to Appendix G for some match pattern examples.
Pattern is Anchored:
This means that the match pattern will be checked against the very beginning of the string
following the “http://.”
Note If you chose Layer 7 URL load directing with cookies or URL cookie load
directing with cookies as the scheduling method, the match pattern is also compared to
the host MIME header. In other words, you can use a host name as a match pattern
criterion.