Dell N1100-ON Reference Manual page 600

vpc
Use the vpc command to configure a port-channel (LAG) as part of an
MLAG instance. Upon issuing this command, the port-channel is down until
the port-channel member information is exchanged and agreed between the
MLAG peer switches.
Use the no form of the command to remove the LAG from the MLAG
domain.
Syntax
vpc vpc-id
no vpc vpc-id
• vpc-id—The MLAG identifier.
Default Configuration
LAGs are not members of an MLAG domain by default. It is expected that all
links belonging to an MLAG instance are connected to switch (or switches)
which consider the links to be members of a single LAG.
This configuration must be present on both the primary and secondary
switches.
The port channel number and VPC number can be different from each other
but the mapping must be the same on the primary and secondary MLAG
peers (i.e., the port channel number must map to the same VPC number on
both MLAG peers).
Command Modes
Port-channel mode
User Guidelines
The peer keepalive protocol is required for MLAG operation. Configure a
LAG between the two MLAG peers as an MLAG peer link before executing
this command.
Example
console(config)#interface po3
console(config-if-Po3)#switchport mode trunk
600
Layer 2 Switching Commands