Nortel Networks 212777 Network Router User Manual


 
Web OS 10.0 Application Guide
184
Chapter 7: Filtering
212777-A, February 2002
All clients are limited to 100 new TCP connections/second to the server. If a client exceeds this
rate, then the client is not allowed to make any new TCP connections to the server for 40 min-
utes.
NOTE All SLB sessions on the switch are affected when you make changes to the fastage
or slowage parameters.
Tunable Hash for Filter Redirection
Web OS 10.0 allows you to choose a number of options when using the hash parameter for fil-
ter redirection. Hashing can be based on source IP address, destination IP address, both, or
source IP address and source port. For example:
1. Configure hashing based on source IP address:
Hashing on the 24-bit source IP address ensures that client requests access the same cache.
2. Set the metric for the real server group to minmisses or hash
.
The source IP address is passed to the real server group for either of the two metrics.
NOTE If firewall load balancing is enabled on the switch, the firewall load balancing filter
which hashes on source and destination IP addresses will override the tunable hash filter.
>> # /cfg/slb/filt 10/ena (Enable the filter)
>> Filter 10 # action redir (Specify the redir action)
>> Filter 10 # proto tcp (Specify the protocol)
>> Filter 10 # group 1 (Specify the group of real servers)
>> Filter 10 # rport 3128 (Specify the redirection port)
>> Filter 10 # vlan any (Specify the VLAN)
>> Filter 10 # adv (Select the advanced filter menu)
>> TCP advanced menu # thash sip (Select source IP address for hashing)
>> # /cfg/slb/group 1 (Select the group of real servers)
>> Real server group 1 # metric minmiss (Set the metric to minmiss or hash)