Configuration Guide

Table Of Contents
©2021 Extreme Networks, Inc. All rights reserved
October 2021
10
1
20.1.7
SMLT - Virtual IST (vIST)
The following shows how to provision the virtual IST. This feature will allow a SMLT cluster to have an IST
between two cluster switches that does not require a physical connection between the cluster switches,
i.e. an MLT with two or more ports. In practice it usually makes sense to use a direct connection between
the vIST peers where this connection is now a regular NNI link and need not be a MLT.
Enter the ACLI show isis system-id on each peer switch to get the System ID value for the spbm
1 smlt-peer-system-id xxxx.xxxx.xxxx command. Each switch in the cluster must peer with its
peer’s System ID value.
config terminal
router isis
spbm 1 smlt-peer-system-id <xxxx.xxxx.xxxx - system id of peer>
spbm 1 smlt-virtual-bmac <xx:xx:xx:xx:xx:xx - Optional, by default the lowest B-MAC
in the cluster is used plus one>
exit
vlan create x type port-mstprstp 0
vlan ISID x <i-isid number>
interface vlan x
ip address <ip address>/<mask>
exit
virtual-ist peer-ip <ip address of peer> vlan x
config terminal
router isis
spbm 1 smlt-peer-system-id e45d.523c.4884
exit
vlan create 2 type port-mstprstp 0
vlan ISID 2 2002
interface vlan 2
ip address 10.1.82.1 255.255.255.252
exit
virtual-ist peer-ip 10.1.82.2 vlan 2
config terminal
router isis
spbm 1 smlt-peer-system-id b0ad.aa47.0884
exit
vlan create 2 type port-mstprstp 0
vlan ISID 2 2002
interface vlan 2
ip address 10.1.82.2 255.255.255.252
exit
virtual-ist peer-ip 10.1.82.1 vlan 2
Enabling vIST