jskfan
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Difference between Cisco Multichassis Etherchannel and VSL
Any Cisco Expert to explain the difference between Cisco MultiChassis Etherchannel and Virtual Switch Link ?
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VSL - Virtual Switch Link - Is the connection between two switches that are configured to appear as a single switch, that is a VSS. VSL is the "link" that the two switches use to communicate the VSS related information between the two.
MultiChassis Etherchannel is when you have a switch that connection to each switch in a VSS.
So if you have 2 6500's (6500A and 6500B) in a VSS you need a VSL between the two in order for them to communicate with each other. Now say you have a 3 switch and you has one more more connections to 6500A and one or more connections to 6500B. These connections can be configured in a Etherchannel just as if they were connected to a single switch. This is because the 6500's appear to be a single switch.
Think of a MultiChassis Etherchannel as an enhanced VPC setup.