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Cisco Catalyst 5000 Series Switches

Field Notice: *Expired* FN - 8951 - Combined Token Ring and Ethernet LANE Not Supported on Catalyst 5000 ATM LANE Modules


Revised December 17, 2007

November 19, 1999

NOTICE:

THIS FIELD NOTICE HAS BEEN EXPIRED AND IS NO LONGER MAINTAINED OR UPDATED BY CISCO.

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE, WARRANTY OR SUPPORT. USE OF THE INFORMATION ON THIS FIELD NOTICE OR MATERIALS LINKED FROM THIS FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.


Products Affected

Product

Description

Revision

WS-X5156= WS-X5156

Catalyst 5000 ATM OC-3 LANE Module Dual PHY (UTP, RJ-45)

-H0

WS-X5157= WS-X5157

Catalyst 5000 ATM OC-3 LANE Module Dual PHY (SMF, SC)

-J0

WS-X5158= WS-X5158

Catalyst 5000 ATM OC-3 LANE Module Dual PHY (MMF, SC)

-J0

WS-X5161= WS-X5161

C5000 ATM OC-12 LANE/MPOA Module Dual PHY (MMF, SC)

-E0

WS-X5162= WS-X5162

C5000 ATM OC-12 LANE/MPOA Module Dual PHY (SMF, SC)

-F0

WS-X5167= WS-X5167

C5K ATM OC-3 LANE/MPOA module dual PHY (multimode, SC)

-E0

WS-X5168= WS-X5168

C5K ATM OC-3 LANE/MPOA module dual PHY (single mode, SC)

-E0

Problem Description

It was planned to provide concurrent support of both Token Ring and Ethernet LAN emulation (LANE) in a single ATM LANE module; however, it has been decided that this feature will not be supported. Token Ring and Ethernet LANE running in separate ATM LANE modules is, and will continue to be, supported.

Background

The decision not to continue support of both Token Ring and Ethernet LANE in a single ATM LANE module was made for the following reasons:

  • Performance for both Token Ring and Ethernet LANE is better if these functions are run on separate ATM LANE modules.

  • The network is more stable if the functions run on separate cards.

  • The market for this combined function has decreased significantly over the last few months, reflecting the trend of both the overall Token Ring market and the number of ATM campus backbones within those networks.

Problem Symptoms

Combined Token Ring LANE and Ethernet LANE will not run simultaneously on the same ATM LANE module. If attempted, this can cause multiple undefined problems within the Catalyst.

Workaround/Solution

This change will likely cause problems for those customers who have made their plans and designs assuming the availability of concurrent Token Ring/Ethernet LANE support. If you are in such a situation and require assistance, please contact your Cisco Partner or local Cisco account team.

For More Information

If you require further assistance, or if you have any further questions regarding this field notice, please contact the Cisco Systems Technical Assistance Center (TAC) by one of the following methods:

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