Now for this scheme I recommend use a dynamic routing protocol like RIPv2, EIGRP, OSPF, etc. Ip route 1.1.1.1 255.255.255.255 34.34.34.3 2īy default the administrative distance for static routes is 1, if we talk about administrative distance, the lowest will always preferred, now if you want to have a back up path you can point to other next hop with higher administrative distance than 1, in my example I set up 2 for the path through R3, so if the link between R1 and R2 is down it will go through R3. A Cisco router uses the Best Path Selection Algorithm to select the single best route to a destination and then inserts it into the IP routing table. BGP also places the best route it knows for each destination (prefix) into the IP routing table. Ip route 4.4.4.4 255.255.255.255 13.13.13.3 2 Routing Descriptor Block How To - fasrimaging fasrimaging Cisco 'show ip route' Command.

Now if you want to have redundancy you need to implement floating static routes. The ping is reciprocal in few words it requires communication in both ways so source and destination must know how to reach each other. This climb is really hard, almost on a par with the infamous Hardknott, and its narrow and has tourist traffic, so look out for cars and please dont block. Smaller the AD value of route/prefix, more preferred it is. AD has only local significance, and is not advertised in routing updates.

Administrative Distance (AD) is an 8 bit value/number (Cisco) that defines trustworthiness of a route. Now if you want to reach the R4's IP through R4, you should have the following configured: In order to reach the IP 4.4.4.4 from R1 you have 2 path, through R2 or R3, static route is the most easy way for routing but it is complex to manage when you have a large network. I think the other members have provided very good explanations and how to fix the problem, well I would like to provide my point of view:

Routing descriptor block how to