Specifications

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Cisco IGX 8400 Series Provisioning Guide, Release 9.3.3 and Later Releases

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Chapter 2 Cisco IGX 8400 Series Cards

Frame Relay Module

Table 2-41 shows the front and back cards supported for the Frame Relay module (FRM).

Note The Frame Relay module (FRM) is no longer available for sale through Cisco Systems, Inc. However,

the card set is supported in Switch Software Release 9.3.30 or later to allow legacy users to migrate their

networks into the current switch software release. If you have questions regarding the availability of the

FRM, contact your Cisco account representative (see “Obtaining Technical Assistance” section on

page xiv for information on contacting Cisco if you do not have an account representative).

The FRM provides FR support for the IGX chassis, and supports the following features:

• Frame forwarding

• GMT request and response

• Explicit congestion notification (ECN)

• ForeSight dynamic congestion avoidance

• UNI and NNI ports

• Support for up to 252 permanent virtual circuits (PVCs), distributable across all ports

• Y-cable redundancy for card sets with the same physical interfaces on the back cards

Firmware Compatibility

Firmware on the FRM front card must match the interface type found on the back card. See Table 2-42

for compatibility information. Use the switch software command, dspcd, to view the type of back card

supported by your current FRM firmware.

Table 2-41 Frame Relay Module Front and Back Cards

Front Cards Compatible Back Cards

FRM, unchannelized (Model D) FRI-V.35 (Models A and B)

FRI-X.21 (Model A)

FRM, channelized (Model E) FRI-T1 (Model A)

FRI-E1 (Model A)

Table 2-42 FRM Firmware Compatibility and Supported Interfaces

Front Card Firmware Supported Back Cards Supported Interface Types

DFRI-V.35

FRI-X.21

V.35 and X.21

E or J FRI-T1

FRI-E1

T1 and E1