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johnlloyd_13
Engager

Clear EIGRP Process?

hi,

 

i need to change OSPF process from 3 to 1 and also change the router-id.

we also got an EIGRP domain which redistribute OSPF routes.

do i still need to clear the OSPF process or no since it's a new OSPF process and router-id?

do i also need to clear the EIGRP process/neighbor to 'force update' the EIGRP routing/domain?

 

router ospf 3

  router-id 3.3.3.3

 <OTHER OSPF CONFIG>

 

router eigrp 2
 redistribute ospf 3

 <OTHER EIGRP CONFIG>

 

 

changeto to:

 

router ospf 1

 router-id 1.1.1.1

 <OTHER OSPF CONFIG>

 

no router ospf 3

 

router eigrp 2
 no redistribute ospf 3

 redistribute ospf 1

 

#clear ip ospf process

 

#clear ip eigrp ?
<1-65535> Autonomous System
neighbors Clear neighbors
vrf Select a VPN Routing/Forwarding instance

 

2 REPLIES 2
Giuseppe Larosa
Hall of Fame Master

Hello @johnlloyd_13 ,

you just need to give some time to the new OSPF process to build the OSPF adjacencies and have a complete LSDB.

 

I would do the changes in the following order

0)  check with show ip ospf neighbors what are the OSPF neigbors of the router

1) router eigrp 2

no redistribute ospf 3

 

2) no router ospf 3

 

3)  router ospf 1

router-id 1.1.1,1

+

other commands

 

4) check with show ip ospf neighbors that all neighbors are listed and in the same state as at point 0)

 

5) router eigrp 2

   redistribute ospf 1

 

The question is that if two OSPF processes have network commands for the same subnets in the same area the router is not able to understand if received hellos or other packets are for process 3 or for process 1. So likely with your procedure new OSPF process will start to talk with external world only after deleting the old process.

 

Hope to help

Giuseppe

 I agree with the suggestions from @Giuseppe Larosa. And to specifically address the questions in your original post I do not think there is any need for clearing eigrp processes and no need for clearing ospf processes. 

HTH

Rick