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In Figure 1, we have implemented MLAG on SwitchA and SwitchB, the downstream SwitchC and SwitchD have dual-access to network through SwitchA and SwitchB respectively.
This topology uses MSTP to prevent link loops, VLAN 15 is mapped to MSTI-1 and VLAN 16 is mapped to MSTI-2. The entire topology belongs to only one MSTP domain named region1.
Figure 1 MLAG Topology
Configuring MLAG on SwitchA
admin@XorPlus# set interface aggregate-ethernet ae2 aggregated-ether-options mlag peer 10.10.0.2 peer-link ae3
Step6 Configure system ID for LACP negotiation.
admin@XorPlus# set interface mlag system-id 00:B0:BC:00:00:00
Step8 Configure a static ARP entry for peer-link interface.
Configuring MSTP on SwitchB, SwitchC, and SwitchD
Configuration of MSTP on SwitchB, SwitchC, and SwitchD are similar to SwitchA.
Verify the Configuration
• You can use the run show spanning-tree mstp bridge command to view the bridge information of MSTP.
Forward Delay: 15
Remaining Hops: 20
• You can use the run show spanning-tree mstp interface command to view the interface information of MSTP.