Configuring an Interface as a Peer-link Interface
Context
A peer-link is a direct aggregated link between two devices configured with M-LAG. It is used to exchange protocol packets and transmit some traffic, and ensures normal running of M-LAG.
Prerequisites
The direct link between two devices configured with M-LAG has been configured as an aggregated link.
When member interfaces of a peer-link are deployed on the same card, a fault of the card causes a peer-link fault. To improve reliability, it is recommended that member interfaces of the peer-link be deployed on different cards.
Procedure
- Run system-view
The system view is displayed.
- Run interface eth-trunk trunk-id
The Eth-Trunk interface view is displayed.
- Run trunkport interface-type { interface-number1 [ to interface-number2 ] } &<1-n>
A member interface is added to the Eth-Trunk.
When you add member interfaces to an Eth-Trunk in a batch, if one interface cannot be added to the Eth-Trunk, all subsequent interfaces in the batch cannot be added to the Eth-Trunk, either.
For the CE12800E that has the ED-E/EG-E/EGA-E series cards installed, the value of n is 128. For other models and CE12800E that has the FD-X series cards installed, the value of n depends on the assign forward eth-trunk mode command.
For the CE12800, the value of n depends on the assign forward eth-trunk mode command.
- Run mode lacp-static
The Eth-Trunk is configured to work in static LACP mode.
By default, an Eth-Trunk works in manual load balancing mode. To ensure M-LAG reliability, you are advised to configure the Eth-Trunk to work in static LACP mode.
- Run undo stp enable
STP is disabled on the interface.
By default, STP is enabled on an interface.
STP needs to be disabled because two devices need to be simulated into one STP root bridge and the directly connected interface cannot be blocked.
- Run peer-link peer-link-id
The interface is configured as a peer-link interface.
By default, no interface is configured as a peer-link interface.
An interface configured as a peer-link interface joins all VLANs by default.
An interface configured as a peer-link interface cannot be configured with any service.
If the ERPS control VLAN, TRILL carrier VLAN, Super-VLAN, or FCoE VLAN needs to be configured, perform 7 to remove the peer-link interface from the control VLAN, carrier VLAN, Super-VLAN, or FCoE VLAN. Otherwise, the control VLAN, carrier VLAN, Super-VLAN, or FCoE VLAN cannot be configured.
If the network-side VLANIF interface is configured, perform 7 to remove the peer-link interface from the VLAN. Otherwise, heartbeat detection may take ineffective.
- (Optional) Run port vlan exclude { { vlan-id1 [ to vlan-id2 ] } &<1-10> }
The VLANs not allowed by the peer-link interface are specified.
By default, no allowed VLAN is specified on a peer-link interface.
- Run commit
The configuration is committed.