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Configuring Redundant LANE Services

database. LANE LES/BUS and LECS redundancy is always enabled. You can use this redundancy feature

by configuring multiple servers.

LES/BUS and LECS redundancy works only with Cisco LECS and LES combinations. Third-party LANE

server components continue to interoperate with the LECS and LES/BUS function of Cisco routers and

switches, but cannot take advantage of the redundancy features.

The following servers are single points of failure in the ATM LANE system:

•

LES/BUS and LECS redundancy eliminates these single points of failure.

•

Enabling Redundant LECSs

To enable redundant LECSs, enter the multiple LECS addresses to the end ATM switches, which are used

as central locations for the list of LECS addresses. After entering the LECS addresses, LANE components

connected to the switches can obtain the global list of LECS addresses.

Note

To configure LES/BUS and LECS redundancy, you must enable multiple, redundant, and standby LECSs

and multiple, redundant, and standby LES/BUSs. The LES/BUS and LEC redundancy configuration

procedure guards against failure on hardware on which LANE components are running, including all

Catalyst 5000 series switches. The configuration procedure is not effective for ATM network switch

failures.

To enable LES/BUS and LEC redundancy, use the following commands beginning in global configuration

mode:

SUMMARY STEPS

1. Switch(config)# atm lecs-addressaddress

2. ATM(config)# name elan-name server-atm-address les-address[index n ]

DETAILED STEPS

Command or Action

Step 1 Switch(config)# atm lecs-addressaddress

Step 2 ATM(config)# name elan-name server-

atm-address les-address[index n ]

LECS (configuration server)

LES (ELAN server)

BUS

Enabling Redundant LECSs, page 23

Enabling ILMI Keepalive Timeout, page 24

Using UNI 3.1 Signalling Support, page 24

Configuring Fast SSRP for Redundant LANE Services, page 24

Configuring Fast SSRP for Redundant LANE Services, page 25

Purpose

Allows you to enter the multiple LECS addresses on the ATM switch.

Specifies redundant LES/BUSs on the ATM module. Enter the command

for each LES address on the ELAN. The index determines the priority; 0 is

the highest priority.

Enabling Redundant LECSs