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Web OS 10.0 Application Guide
Chapter 16: Persistence
431
212777-A, February 2002
4. Select the appropriate load-balancing metric for the real server group.
n If embedding an IP address in the cookie, select roundrobin or leastconns as the
metric.
n If you are not embedding the IP address in the cookie, select hash as the metric in con-
junction with a cookie assignment server.
While you may experience traffic concentration using the hash metric with a cookie
assignment server, using a hash metric without a cookie assignment server will cause
traffic concentration on your real servers.
5. Enable cookie-based persistence on the virtual server service.
In this example, cookie-based persistence is enabled for service 80 (HTTP).
Once you specify cookie as the mode of persistence, you will be prompted for the following
parameters:
n Cookie-based persistence mode: insert, passive or rewrite
n Cookie name
n Starting point of the cookie value
n Number of bytes to be extracted
n Look for cookie in the URI [e | d]
If you want to look for cookie name/value pair in the URI, enter e to enable this option. To
look for the cookie in the HTTP header, enter d to disable this option.
>> # /cfg/slb/group 2/metric hash (Select hash as server group metric)
>> # /cfg/slb/virt 1/service 80/pbind
Current persistent binding mode: disabled
Enter cookie|sslid|disable persistence mode: cookie
Enter insert|passive|rewrite cookie persistence mode [i/p/r]: p
Enter cookie name: CookieSession1
Enter starting point of cookie value [1-64]: 1
Enter number of bytes to extract [0-64]: 8
Look for cookie in URI [e|d]: d
Set multiple response count [1-16]: 1