Configure The Isl - Lenovo ThinkSystem NE2552E Application Manual

Configure the ISL

1. Configure STP if required. Use PVRST or MSTP mode only:
2. Configure the ISL ports and place them into a LAG (dynamic or static):
3. Configure VLAG Tier ID. This is used to identify the VLAG switch in a multi‐tier
4. Configure the ISL for the VLAG peer.
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NE2552E Application Guide for ENOS 8.4
The ISL connecting the VLAG peers is shared by all their VLAGs. The ISL needs to
be configured only once on each VLAG peer.
NE2552E(config)# spanning-tree mode pvrst
NE2552E(config)# interface port 1-2
NE2552E(config-if)# switchport mode trunk
NE2552E(config-if)# lacp mode active
NE2552E(config-if)# lacp key 200
NE2552E(config-if)# exit
NE2552E(config)# vlag isl adminkey 200
Notes:
 In this case, a dynamic LAG is shown. A static LAG (portchannel) could be
configured instead.
ISL ports and VLAG ports must be members of the same VLANs.

environment.
NE2552E(config)# vlag tier-id 10
Make sure you configure the VLAG peer (VLAG Peer 2) using the same ISL
aggregation type (dynamic or static), the same VLAN and the same STP mode and
tier ID used on VLAG Peer 1.