Cisco Catalyst 6500-E Series Manual page 16

Switch as the backbone of a unified access campus architecture

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With Cisco IOS Software Release 15.0(1)SY1 and newer software, the Cisco Catalyst 6500-E with Supervisor

Engine 2T supports the EVN feature. EVN simplifies deployment and management of MPLS VPNs and VRF-Lite

to allow network administrators to more easily and quickly adopt these technologies, which can sometimes seem

daunting to implement. The primary piece of EVN is the virtual network trunk (VNET trunk) capability, which vastly

simplifies the deployment of VRF-Lite segmentation. Many organizations choose to deploy VRF-Lite VPNs

because VRF-Lite does not require Border Gateway Protocol (BGP) or Label Distribution Protocol (LDP), and

often the scalability of VRF-Lite (up to 32 VPNs) is more than what is needed.

Figures 16 and 17 show the benefit of using EVN in a VRF-Lite environment.

Figure 16.

Figure 17.

VRF-Lite Configuration Without EVN

VRF-Lite Configuration with EVN

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