WAN Module Installation and User Guide
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1
Installing the WAN Module
This chapter covers the following topics:
•
Installing the WAN Module on page 1-2
•
Ports and Connectors on page 1-3
•
Module LEDs on page 1-4
•
Installing the WAN Module Software on page 1-6
Overview
The Extreme Networks WAN modules include four-port T1 or E1 modules that can be
configured to use Multilink PPP to aggregate Ethernet or IP routed traffic across
multiple T1/E1 physical links. The modules also have two general purpose 10/100
Mbps Ethernet ports. WM-4T1i is the designation of the T1 version, and WM-4E1i is the
designation of the E1 version. Also included among the WAN modules is a one-port T3
module, designated WM-1T3i, that uses PPP for its traffic.
The modules also have eight internal loopback ports. The Alpine 3800 switch modules
have hardware queues associated with the output of each port for QoS (rate shaping
and priority queueing). To implement ingress QoS, you needed to use the hardware
queues associated with a second port as a loopback port for ingress QoS.
