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Catalyst 6000 Family Content Switching Module Installation and Configuration Note
78-11631-02 Rev. A0
Configuration Examples
Configuring HSRP
This section provides an overview of a Hot Standby Router Protocol (HSRP) configuration
(see Figure 13) and describes how to configure the CSMs with HSRP and CSM failover on the
Catalyst 6000 family switches.

HSRP Configuration Overview

The figure shows two Catalyst 6000 switches, Switch 1 and Switch 2, are configured to route from a
client-side network (10.100/16) to an internal CSM client network (10.6/16, VLAN 136) through an
HSRP gateway (10.100.0.1).
•The client side network is assigned an HSRP Group ID = HSRP ID 2.
•The Internal CSM Client network is assigned an HSRP Group ID = HSRP ID 1.
Note HSRP group 1 must have tracking turned on so that it can track the client network ports on HSRP
group 2. When HSRP group 1 detects any changes in the active state of those ports, it mirrors those
changes so that both the HSRP primary (Switch 1) and HSRP secondary (Switch 2) share the same
knowledge of the network.
In the example configuration, two CSMs (one in Switch 1 and one in Switch 2) are configured to forward
traffic between a client -side and a server-side VLAN:
•Client VLAN 136
Note The client VLAN is actually an internal CSM VLAN network; the actual client network is
on the other side of the switch.
•Server VLAN 272
The actual servers on the server network (10.5/1) point at the CSM server network through an aliased
gateway (10.5.0.1), allowing the servers to run a secure subnet.
In the example configuration, an EtherChannel is set up with trunking enabled, allowing traffic on the
internal CSM Client network to travel between the two Catalyst 6000 family switches. The setup is
shown in Figure 13.
Note EtherChannel protects against a severed link to the primary switch and a failure in a non-CSM
component of the switch. EtherChannel also provides a path between an active CSM in one switch
and another switch, allowing CSMs and switches to fail over independently, providing an extra level
of fault tolerance.