OSPF and BGP over an MCT-Enabled Network
OSPF and BGP adjacencies can be
established over the MCT member VLANs between any combinations of network elements
in the
MCT topology.
The following combinations can be established:
- Devices connected to the MCT cluster over CEP ports
- Devices connected to the MCT cluster over non-MCT ports
- MCT cluster devices
- MCT clients
- Devices behind MCT clients
In such a deployment, the MCT clients and the devices behind them form separate protocol adjacencies with each MCT cluster device. These multiple Layer 3 next hops can be utilized by deploying ECMP on the MCT client device.
Note: The MCT failover will not be a hitless
one for Layer 3 traffic because each MCT cluster device forms an independent adjacency.
When one of the MCT devices goes down, a Layer 3 reconvergence is required and
traffic
loss is expected during this time.
