This document describes the important difference between a CatOS System
Software and Cisco IOS® System Software
configuration of the Content Switching Module (CSM). All other CSM sample
configurations are configured with Cisco IOS Software on the Multilayer Switch
Feature Card (MSFC), independent of the CatOS or Cisco IOS Software
Readers of this document should be knowledgeable of the
The information in this document is based on the software and hardware
The information in this document was created from the devices in a
specific lab environment. All of the devices used in this document started with
a cleared (default) configuration. If your network is live, make sure that you
understand the potential impact of any command.
For more information on document conventions, see the
Technical Tips Conventions.
CatOS on the Supervisor Engine and Cisco IOS Software on the
MSFC (Hybrid): a CatOS image can be used as the system software to run
the Supervisor Engine on Catalyst 6500/6000 switches. If the optional MSFC is
installed, a separate Cisco IOS Software image is used to run the MSFC.
Cisco IOS Software on both the Supervisor Engine and
MSFC (Native): a single Cisco IOS Software image can be used as the
system software to run both the Supervisor Engine and MSFC on Catalyst
Note: Refer to
of the Cisco Catalyst and Cisco IOS Operating Systems for the Cisco Catalyst
6500 Series Switch for more information.
The CSM was initially supported only in Catalyst switches running Cisco
IOS System Software. Customer requests resulted in the addition of CatOS System
Software support. In Cisco IOS System Software, the Layer 2 (L2) trunks between
the Catalyst backplane and the CSM "interfaces" were setup automatically. In
CatOS System Software, the trunks must be manually configured.
In the MSFC/IOS, configure the CSM with a
VLAN and a
In the CatOS, trunk those two VLANs to the first interface on the CSM
by issuing the
command. For example, if your CSM is inserted in
slot 3, and you have configured vlan240 and vlan204 as your client and server
VLANs in the MSFC/IOS portion of the CSM configuration, the set
trunk command would be as follows in the CatOS portion of your
set trunk 3/1 240 204