Cisco Catalyst 6880-X Specifications download pdf (Page 46)

Distribution Layer April 2014

Figure 19 - Two-tier collapsed LAN core design

2086

LAN

Access

Collapsed

LAN Core

Server

Room

Client

Access

Switches

Distribution

Switch

Stack

Wireless

LAN Controller

Servers

Firewall

WAN

Routers

Internet

Firewall

In larger LAN locations where the access layer density along with the number of network-service devices and

WAN routers exceeds platform density or operational complexity additional distribution layer modules can break

up the design.

The addition of a separate services distribution layer provides:

• Modular growth for high densities of WAN headend routers and WAN services like WAAS appliance.

• Wireless LAN controller termination in a central location for larger campus populations.

• Fault domains separate from the LAN access for a more resilient overall network.

• IP address summarization from WAN or Internet edge toward the core of the network.

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Cisco Catalyst 6880-X Specifications Page 46