User manual

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

78-12569-16

Caveats

• CSCdw24384

In a configuration in which connections arrive at a CSM through a redundant router pair running

HSRP, it is possible that connections arrive from the standby HSRP peer. When returning traffic

back through that redundant router pair, the CSM must send the traffic to the HSRP virtual MAC

address shared by the two routers. In CSM software releases 1.2(1) and 2.1(1), the CSM incorrectly

forwards such traffic to the real MAC address of the standby router. This defect is fixed in CSM

software release 2.1(2).

Open Caveats in Release 2.1(1)

This section describes known limitations that exist in CSM software release 2.1(1).

• 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.

• CSCdu82478

In the CSM software release 2.x, it is important that packets transmitted from the CSM toward a

client (server) are transmitted on the same VLAN as packets received by the CSM from that same

client (server). This constraint may be satisfied as follows:

–

Multiple routes on the CSM to the same destination are supported, but all such routes need to

go through gateways on the same VLAN. Ensure that all routes to any particular destination go

through the same VLAN.

For example, the following configuration is invalid because it is possible for traffic from a

remote source to arrive on both VLAN 10 and VLAN 20:

Router(config)# module csm 4

Router(config-module-csm)# vlan 10 client

Router(config-slb-vlan-client)# gateway 1.1.1.1

Router(config-module-csm)# vlan 20 client

Router(config-slb-vlan-client)# gateway 2.2.2.2

To make this configuration valid, delete the gateway command from either VLAN 10 or VLAN

20.

Note NOTE: Do not use the gateway command in more than one VLAN.

–

Traffic into the CSM from an IP address must arrive on the same VLAN the CSM uses to send

to that IP address. Ensure that all traffic received by the CSM from a specific destination address

arrives on the same VLAN that the CSM uses to reach that destination if the CSM is configured

with a route as follows:

Router(config)# module csm 4

Router(config-module-csm)# vlan 10 client

Router(config-slb-vlan-client)# route 10.0.0.0 255.255.255.0 gateway 1.1.1.1

For load balancing to function properly, all traffic arriving from the 10.0.0.0/24 subnet must

reach the CSM through VLAN 10.