Cabletron Systems 9032578-05 manual New Features that Require Specific Line Cards, SSR-2-LX70-AA

Appendix A: New Features Supported on Line Cards

SSR-2-SX-AA	X		X
SSR-2-LX-AA	X		X
SSR-2-LX70-AA	X		X
SSR-2-SER-AA	X	X	X
SSR-2-SERC-AA	X	X	X
SSR-2-SERCE-AA	X	X	X

New Features that Require Specific Line Cards

T-series line cards, -AA revision line cards, and non -AA revision line cards can be used in the same chassis. Version 3.0 and later firmware can detect the revision number of each line card, and when configuring features that require -AA or T-series line cards, the system checks to see if the line card revision matches.

This section explains how you can use line cards that support the feature and line cards that do not support the feature in a single system. This document does not present detailed command and configuration examples. Refer to the SSR User’s Manual and CLI Reference Manual for more detail.

Network Address Translation

Network Address Translation (NAT) allows IP addresses to be translated between the local (inside) interface and global (outside) interface. Ports that are assigned to the inside and outside interfaces must reside on -AA or T-series hardware. This also applies to ports that are assigned to an interface through a VLAN.

Diagram 1 shows a simple NAT example. Users on Network A appear to be on the same subnet as Network W when traffic is going to the global Internet. There is no translation between Network A and B or between Network B and W.

362 SmartSwitch Router User Reference Manual