- Written by Shamit Kapadia
- Posted on 3月 4, 2025
- Updated on 3月 4, 2025
- 12 Views
EVPN VXLAN all-active multihoming (AA-MH) provides redundancy to reduce or eliminate the impact of outages and maintenance. The objective of Maintenance Mode on AA-MH is to gracefully drain away the traffic from the EVPN core flowing through a switch that is part of multihoming while the switch is put into maintenance, and to gracefully add it back into the network and attract traffic again once the switch is out of maintenance. During the maintenance cycle any customer edge Ethernet or Port-Channel interfaces, whether they are participating as ethernet segments or not, can also be put into maintenance mode. Doing so eliminates the northbound traffic from the customer edge from flowing through the switch under maintenance. The traffic will instead take a path through other available multi-homing peers.