CLI Reference Guide

Chapter 12 | Link Aggregation Commands
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◆ STP cannot be enabled on a peer link or an MLAG member. An STP enabled
port cannot be configured as a peer link or an MLAG member.
mlag This command enables MLAG globally on the switch. Use the no form to disable
MLAG.
Syntax
[no] mlag
Default Setting
Enabled
Command Mode
Global Configuration
Example
Console(config)#mlag
Console(config)#
mlag domain
peer-link
This command configures an MLAG domain. Use the no form to remove the MLAG
domain.
Syntax
mlag domain domain-id peer-link interface
no mlag domain domain-id
domain-id – Domain identifier. (Range: 1-16 characters)
interface
ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-54)
port-channel channel-id (Range: 1-26)
Command Usage
◆ There shall be one and only one peer link for a pair of MLAG devices in the same
MLAG domain. (See Figure 1.)
◆ The peer link can be a normal port or a static trunk.
◆ The peer link may be a normal port or a static trunk.
◆ MAC learning is automatically disabled for the peer link.