Nortel Networks 8672ATME ATM ELANs, and Ethernet VLANs, Virtual network router, Traffic shaping

Chapter 1 About the Passport 8672ATME Module 27

•Proprietary MIB support for configuration of RFC 1483 and ATM port specific setup

•Manageable through the Passport CLI or Device Manager, the SNMP-based graphical interface

•Monitored through a World Wide Web browser from anywhere on the network.

ATM ELANs, and Ethernet VLANs

The Passport 8672ATME Module supports ATM Forum Emulated LANs (ELANs). An ELAN extends an Ethernet VLAN, which is a broadcast domain, over an ATM network.

In general, there is a one-to-one mapping between an ATM ELAN and an Ethernet VLAN. An ATM ELAN never spans more than one ATM port because the software considers each ATM port completely separate.

The Passport 8672ATME Module participates in ELANs as RFC 1483 PVCs. Only Ethernet ELANs are supported on this module.

If you delete a VLAN, you delete 1483 ELANs associated with the VLAN.

Virtual network router

Virtual network router (VNR) refers to the routing functions between two ATM virtual/emulated networks. You can use the Passport 8672ATME Module as an IP- and IPX-optimized VNR.

Traffic shaping

The Passport 8672ATME Module provides per channel traffic shaping and supports unspecified bit rate (UBR) and variable bit rate (VBR). Channels with a specified cell rate are called rate-shaped channels.

Using the Passport 8672ATME Module