BFD multihop Static route

[ferrari20215]

Hi All,

I see the document of "IP Routing BFD Configuration Guide, Cisco IOS Release 15S",

I have question about "How to Configure BFD Multihop Support for IPv4 Static Routes".

The paragraph say : "Specify a BFD destination address which is same as the IPv4 static route next hop or gateway address."

Q1. What is BFD destination mean ? it mean create BFD session destination ip address? 

Q2. Is BFD session source ip address need to the same subnet of ip static route nexthop ?

Here is the article example:

ip route 192.0.2.0 255.255.255.0 10.1.1.2

ip route static bfd 192.0.2.1 10.1.1.1

Thanks and regards

James Liao

[Reza Sharifi]

Hi,

ip route static bfd 192.0.2.1 10.1.1.1

So, in the above statement 192.0.2.1 is the destination IP and 10.1.1.1 is the source IP. 10.1.1.1 should be the address of the interface you are using to configure BFD.

HTH

[ferrari20215]

Thanks a lot.

Is BFD session source IP address need to the same subnet of static route nexthop IP?

EX:

ip route 192.0.2.0 255.255.255.0 10.1.1.2

ip route static bfd 192.0.2.1 10.1.1.1