troubleshooting Question

Layer 2 redundancy between switches

Avatar of Jaison_nj
Jaison_nj asked on
Switches / HubsNetwork ManagementNetwork Operations
11 Comments3 Solutions812 ViewsLast Modified:

I need your expert help to implement this network change.

We have 2 Nortel 8600 (in layer 2 mode) switches in a zone connected between using IST link. We need to replace these 2 switches with new Cisco3750E.

My question is how to implement it on Layer 2 redundant mode. I believe the existing two has an IST (Inter Switch Trunk) link in between to provide the redundancy, if I am not wrong.

I need a similar configuration for Cisco 3750 switches.

An existing configuration
================

Switch1
========
#
# MLT CONFIGURATION
#

mlt 1 create
mlt 1 add ports 1/7-1/8
mlt 1 name "switch2_IST"
mlt 1 perform-tagging enable
mlt 1 ist create ip 10.10.10.41 vlan-id 200
mlt 1 ist enable

#
# STG CONFIGURATION
#

stg 1  add ports 1/1-1/2,1/7-1/8
stg 1  group-stp disable

Switch2
========
#
# MLT CONFIGURATION
#
mlt 1 create
mlt 1 add ports 1/7-1/8
mlt 1 name "switch1_IST"
mlt 1 perform-tagging enable
mlt 1 ist create ip 10.10.10.42 vlan-id 200
mlt 1 ist enable
# STG CONFIGURATION
#

stg 1  add ports 1/1-1/2,1/7-1/8
stg 1  group-stp disable


 
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