User manual

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

78-12569-16

Caveats

• CSCdx08115

Health probes can run on 32 VLAN interfaces only. The CSM 2.2(1) release supports 255 VLANs.

However, when more than 32 VLANs are configured, the CSM VLAN interface IP addresses is not

functional for the 33rd and subsequent VLANs. The CSM VLAN interface IP address is the IP

address configured in the VLAN submode under module csm slot. By not being functional, the

VLAN addresses will not respond to ICMP requests, nor will health probing functionality work

through these interfaces. This problem occurs only in the 2.2(1) release.

Workaround: Do not run health probes on more than 32 VLAN interfaces.

• CSCdx04521

The system hangs during IP Option processing. When the CSM receives IP frames with more than

~5 IP options, it is possible that the device will fail.

This issue exists in CSM releases 1.x, 2.1(1), 2.1(2), and 2.2(1). It is resolved in releases 2.1(3) and

2.2(2).

• CSCdw48046

When using the destination IP address hash predictor, the CSM reassigns connections from a failed

or out-of-service server to the next in-service server. In cases where multiple contiguous servers fail

or are taken out-of-service, too many connections may be reassigned to the next in-service server.

This condition causes performance problems with the next in-service server. In the worst case

scenario, this condition may cause the next in-service server to fail, which in turn may cause the

servers in the server farm to fail.

Open Caveats in Release 2.2(1)

This section describes known limitations that exist in CSM software release 2.2(1).

• CSCdw80718

Configuring a large number of client VLANs (each configured with its own gateway) can cause the

switch console to hang and the configuration performance to be extremely slow.

Workaround: Limit the number of client-side gateways configured to a small number (less than 10).

• CSCdv00464

Issuing the clear interface gigabit slot/port command for a CSM gigabit port may not clear the

counters.

Workaround: None.

• CSCdv11685

Do not configure different fault-tolerant pairs to use the same FT VLAN.

Workaround: Use a different FT VLAN for each fault-tolerant CSM pair.

• CSCdv29125

In firewall configurations using an HTTP 1.1 redirect virtual server, a connection going through the

firewalls may remain open after a redirect virtual server connection is established.

Workaround: None. This connection closes when it times out.

• CSCdu57891

The output from the show interface gigabit slot/port command may erroneously indicate that one

or more of the CSM gigabit ports are down.

Workaround: Ignore the display.