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.
nIf embedding an IP address in the cookie, select roundrobin or leastconns as the
metric.
nIf 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:
nCookie-based persistence mode: insert, passive or rewrite
nCookie name
nStarting point of the cookie value
nNumber of bytes to be extracted
nLook 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