Administrator Guide

Layer 2 Switching Commands 622
system-mac
Use this command to manually configures the MAC address for the VPC
domain. Use the no form of the command to revert the domain MAC address
to the default value.
Syntax
system-mac mac-address
no system-mac
• mac-address —The system MAC address for the VPC domain.
Default Configuration
By default, the domain uses a pre-configured MAC address.
Command Modes
VPC domain mode
User Guidelines
The VPC domain MAC address must be the same on both MLAG peer
devices. The MAC address is a unicast MAC address in aa:bb:cc:dd:ee:ff
format and is not equal to the physical MAC address of either the primary
VPC or secondary VPC device. The configured VPC domain MAC address is
exchanged during role election and, if configured differently on the peer
devices, VPC does not become operational.
The configured domain MAC address is present in the LACP PDUs and STP
BPDUs that are sent on VPC member ports if VPC primary device election
takes place after the VPC MAC address is configured. When the VPC MAC
address is configured after the VPC primary device is elected, already agreed
upon operational VPC MAC address is used in the LACP PDUs and STP
BPDUs instead of the configured VPC MAC address.
Command History
Introduced in version 6.2.0.1 firmware.
Example
console(config-vpc 1)system-mac 00A2.64B3.A245
2CSNXXX_SWUM204.book Page 622 Monday, January 25, 2016 1:25 PM