Migrating from one routing protocol to another is always a disruptive change to the network.It requires careful planning to minimize the outages, and even then, they are inevitable,although their duration can be kept very low. Therefore, a routing protocol migration always requires a maintenance window.
Routing protocol migration is usually accomplished with the following steps:
Step 1. Plan the migration strategy.
Step 2. Activate the new routing protocol on all routers in the topology, raising its
administrative distance (AD) above the ADs of the current IGP. If the new IGP
is Routing Information Protocol (RIP) or Enhanced Interior Gateway Routing
Protocol (EIGRP), redistribution from the current into the new IGP has to be
configured on each router as well. The current IGP is left intact.
Step 3. Verify the new IGP’s adjacencies and optionally the working database
contents.
Step 4. Deactivate the current IGP in a gradual fashion.
Step 5. Remove the temporary settings from the new IGP.
Routing protocol migration is usually accomplished with the following steps:
Step 1. Plan the migration strategy.
Step 2. Activate the new routing protocol on all routers in the topology, raising its
administrative distance (AD) above the ADs of the current IGP. If the new IGP
is Routing Information Protocol (RIP) or Enhanced Interior Gateway Routing
Protocol (EIGRP), redistribution from the current into the new IGP has to be
configured on each router as well. The current IGP is left intact.
Step 3. Verify the new IGP’s adjacencies and optionally the working database
contents.
Step 4. Deactivate the current IGP in a gradual fashion.
Step 5. Remove the temporary settings from the new IGP.
No comments:
Post a Comment