anuj Archive

Conditions for a non-ZERO Forward Address in OSPF

According to cisco documentation, all the below conditions need to be met in order for the OSPF to set a non-zero Forwarding address 1. OSPF is enabled on the ASBR’s next hop interface 2. ASBR’s next hop interface is non-passive under OSPF 3. ASBR’s next hop interface is not point-to-point 4. ASBR’s next hop interface

Things to remember on Redistribution

Below are some key points to remember on Redistribution. When redistributing from OSPF in to BGP, by default, BGP only accepts internal routes not external type-1 or type-2. Also, the routes learnt via iBGP will not be redistributed into OSPF with the use of “redistribute” command until “bgp redistribute-internal” is used under bgp process. When