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New Member

2 static routes / 2 nexthops on same LAN

Hi everyone!

I have this question, even could be a little dummie.

I have a LAN environment, for example on this interface on R1:

hostname R1


int fa0/0

ip address


And there is another router R2 connected to the same LAN segment, with the ip address:

Hostname R2


int Fa0/1


Im reaching a remote network from R1with static routing :

Hostname R1

ip route

This is from R1 im reaching the net through R2 (

We also have a third router R3, with IP:

Hostname R3


int fa0/1

ip address


All 3 routers on the same segment..

We want to do a static floating route from R1 in order that, when R2 goes down, the traffic could be send on R3, for example:

Hostname R1

ip route 200 <--dist. 200

The thing is that as the 3 routers are on the same segment, if R2 goes down, the subnet still will be alive on the RIB..

As far as i know, the FIB would clear the adjacency for (R2), but the RIB will keep alive the first route throught R2 because the segment is still alive..

Do you know how could be avoid this?

We can?t use dynamic routing protocols, nor HSRP, and we cant configure any other L3 interface..

As i think, there would be noissue with FIB, because the ARP timeout would glean the adjacency, but the RIB would keep the 1st route available...

Any ideas?



New Member

Re: 2 static routes / 2 nexthops on same LAN

ok u can t use dynamic protocols nor HSRP, you can use a bad solution: just use 2 static routes with default dist:


ip route

ip route

then the router will send a copy of the paquet to each router. but i don t know how your application will do when it receives duplicate copy of the i said it s a bad solution. but i can t see an other way ;-)

Hall of Fame Super Silver

Re: 2 static routes / 2 nexthops on same LAN


In your solution the router will have two entries for the destination in the routing table. But it will not send a copy of the packet to each router but will send some packets to one next hop and will send other packets to the other next hop. This is not the desired outcome.

Cisco has recognized the problem with static routes with a next hop over a LAN interface will not be withdrawn while the LAN interface is still active. Cisco has provided a solution to this with a feature called Reliable Static Routes with Object Tracking. This link should give you the information to configure it and to solve the problem:



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