Single Port Smlt - Avaya 8600 Configuration Manual

Limitations:
• You cannot directly configure or modify any MSTP settings (CIST or MSTI) on the IST
ports.
• You cannot configure the Bridge Priority on any instance (CIST or MSTI), which is hard
coded to 00:00.
You cannot stagger the Root bridge across the two SMLT peers, that is one switch cannot be
the MSTP Root for the CIST + MSTI2 while the other switch is MSTP Root for MSTI1 + MSTI3.
But you can still achieve load balancing over alternate active forwarding topologies by changing
the PathCost setting on the MSTP nodes connected to your SMLT Cluster.

Single Port SMLT

Use Single Port SMLT to configure a split MultiLink trunk that uses a single port. The Single
Port SMLT behaves like an MLT-based SMLT and can coexist with SMLTs in the same system.
Single Port SMLT lets you scale the number of split MultiLink trunk on a switch to the maximum
number of available ports.
Split MultiLink trunk links can exist in the following combinations on the SMLT aggregation
switch pair:
• MLT-based SMLT and MLT-based SMLT
• MLT-based SMLT and single link SMLT
• single link SMLT and single link SMLT
Single Port SMLT configuration
You can use Single Port SMLT when you exceed the Avaya Ethernet Routing Switch 8800/8600
MultiLink trunk Group ID limit for server farm applications. The Single Port SMLT topology
allows scaling up to the maximum number of ports on a switch. You can use any Layer 2 switch
capable of link aggregation as the client in this case.
Configuration — Link Aggregation, MLT, and SMLT
Split MultiLink Trunking
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