Extreme Networks WM-4T1i - Manual (Page 9)

WM-4T1i Module Installation and User Guide 1-1
1 Installing the WM-4T1i Module
This chapter covers the following topics:
• Installing the WM-4T1i Module on page 1-2
• Ports and Connectors on page 1-3
• WM-4T1i Module LEDs on page 1-3
• Installing the WM-4T1i Module Software on page 1-5
Overview
The Extreme Networks WM-4T1i module is an four-port T1 module that can be
configured to use Multilink PPP to aggregate Ethernet traffic across multiple T1
physical links. The module has two 10/100 Mbps Ethernet ports.
The WM-4T1i module also has six 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