Configuration Guide

Table Of Contents
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October 2021
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22.1.1.13 IST Configuration – SMLT Cluster switch 7001 & 7002
The following port based VLANs will be configured on the SMLT Switch cluster
Switch Feature Parameter Value
7001 & 7002 IST MLT ID
1
VLAN
2
VLAN Port Members 38 & 39
7001 & 7002 LACP Aggregation Disable on ports 38-39
Mode Off on ports 38-39
7001 IST VLAN IP address 10.70.2.5/30
Ports 38,39
7002 IST VLAN IP address 10.70.2.6/30
Ports 38,39
For the VSP 7000, it is important to not enable the filter-untagged-frame option on the IST
port members. Also, the default PVID of all IST ports must be the primary B-VLAN ID; for
this example, this will be B-VLAN ID 4051. This will happened automatically providing
SPB is enable first prior to enabling the IST.
Also, it is recommended to not enable VLACP on the IST.
Please note that Spanning Tree should be disabled on all SPB NNI interfaces that are not configured as
SMLT ports. SMLT by default will disable Spanning Tree.
Since we will be adding an IST interface via the red rear ports, ports 38 & 39, we will have to disable
LACP on these ports and add an MLT.
VSP 7000 – Disable LACP on ports 38 & 39
7001 & 7002: Same configuration on both switches
7001(config)#interface ethernet 38,39
7001(config-if)#no lacp aggregation enable
7001(config-if)#lacp mode off
7001(config-if)#
exit
Prior to enabling the IST, LACP must be disabled on the rear port member that are
being used for the IST