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2-6

Catalyst 6500 Series Content Switching Module Configuration Note

OL-4612-01

Chapter 2 Networking with the Content Switching Module

CSM Networking Topologies

CSM Inline, MSFC on Client Side

Figure 2-4 shows the CSM in a configuration where the MSFC is located on the client side.

Figure 2-4 CSM Inline, MSFC Located on the Client Side

This configuration has these characteristics:

• The configuration is easy to deploy.

• Server-to-server Layer 3 communications pass through the CSM.

• Routing protocols can be used between the MSFC and the upstream router.

• All traffic to or from the servers passes through the CSM.

CSM in Aggregate Mode

Figure 2-5 shows the CSM in an aggregate-mode configuration.

Figure 2-5 CSM Located in Aggregate Mode

This configuration has these characteristics:

• The CSM is not inline and the module does not see unnecessary traffic.

• Easy routing and CSM configuration.

• Requires PBR or client SNAT because return traffic is required.

• Server-to-server load-balanced connections always require SNAT.

• Layer 2-rewrite is not possible.

Catalyst

6500

98156

CSM

MSFC

Upstream

router

Client

Servers