Installation guide

Installing and Removing a XENPAK Module

Extreme Networks Pluggable Interface Modules Installation Guide

ExtremeXOS 11.5.0 or later supports the LW XENPAK at full functionality with 100% performance in the Summit

X450a and X450e series switches.

CAUTION

The maximum input power (average receive power) should be less than 0.5 dBm.

Transmitter Clock Locking Mode

The LW XENPAK module provides an interface connection between a 10-gigabit Ethernet and a 10-

gigabit SONET/SDH network from a 10-gigabit Ethernet equipment port.

The default transmitter clock locking mode of the LW XENPAK module is set to line timing mode.

When in line timing mode, the LW XENPAK module transmitter clock is locked to the receiver-

recovered clock. When the LW XENPAK is connected to the SONET/SDH network on the other side of

optical cable, the LW XENPAK transmitter clock synchronizes with the SONET/SDH clock source,

which helps reduce the pointer adjustment between the SONET/SDH network and the LW XENPAK.

To prevent a clock reference loop, be sure that only one end of a link is using line timing mode and to

use internal timing when testing with an optical loopback cable.

Installing and Removing a XENPAK Module

WARNING!

XENPAK modules become very hot after prolonged use. Be careful when removing a XENPAK module from the

chassis or option card. If the XENPAK module is too hot to touch, disengage the XENPAK module and allow it to

cool before removing it completely.

This section describes installing and removing the XENPAK module (Figure 7). You can install or

remove the XENPAK module from your Extreme Networks switch without powering off the system.

NOTE

On a Summit X450 series, X450a series, or X450e series switch, the XENPAK module is inserted into an optional

module card. Although the module card is not hot-swappable, you can hot swap the XENPAK into and out of the

module card on the Summit. For information about the optional module card for XENPAKs on a Summit X450

series, X450a series, or X450e series switch, see the Summit Family Switches Hardware Installation Guide.