User manual

Release Notes for Catalyst 6500 Series Content Switching Module Software Release 2.2(8)

78-12569-16

Caveats

• CSCdw49073

Configuring more than 128 VIPs with the same IP address can result in unpredictable balancing

behavior. The CSM should restrict the user from configuring more than 128 VIPs with the same IP

address.

Workaround: Do not configure more than 127 virtual servers on the same VIP.

• CSCdu04990

If the CSM parses a cookie to make a connection when the connection is closed, the connection will

be listed as being current. If the client makes a connection again after the sticky timer expires, then

one more connection goes into a closing state, thereby incrementing the counter by one.

Workaround: None.

• CSCdu05559

During heavy traffic conditions in a fault-tolerant configuration, the primary CSM may not be able

to send heartbeat messages to the secondary CSM. This condition causes both the primary and

secondary CSMs to become active, creating a bridge loop in the network.

Workaround: Reboot the primary CSM.

• CSCdu33696

When the CSM is balancing traffic and you configure the CSM with both a DFP agent and a

manager, the following may occur:

–

All the counters in the show ip slb stats command are reset to 0.

–

The show command returns No ICC Response intermittently.

–

Unknown real servers with unknown bind IDs and weights appear.

–

Virtual servers send an RST to all connection requests.

–

CSM performance becomes very slow.

Workaround: Do not configure both a DFP agent and a manager on the CSM when it is balancing

traffic.

• CSCdu38154

Under a heavy FTP connection load you may see warnings about FTP not finding associated

sessions. These messages are benign.

Workaround: None.

• CSCdu46347

If you change the server farm VLAN IP address when the ICMP probe is configured, the ICMP

probe still uses the old IP address instead of the new one. Changing the server farm with ICMP

causes probes to fail and eventually brings the virtual server out of service.

Workaround: Delete the ICMP probe from the server farm configuration, change the VLAN IP

address, and then add the ICMP probe back to the server farm configuration.

Note Multiple server farms may be associated with a VLAN IP address. To determine which server

farms are associated with a VLAN IP address, issue the show ip slb real command, examine the

display, identify the real servers that are in the same network as the VLAN IP address, and note

the server farm associations of those real servers.