Users Guide

Establishing Sessions for Static Routes
Sessions are established for all neighbors that are the next hop of a static route.
Figure 15. Establishing Sessions for Static Routes
To establish a BFD session, use the following command.
• Establish BFD sessions for all neighbors that are the next hop of a static route.
CONFIGURATION mode
ip route bfd [prefix-list prefix-list-name] [interval interval min_rx min_rx multiplier value
role {active | passive}]
Example of the show bfd neighbors Command to Verify Static Routes
To verify that sessions have been created for static routes, use the show bfd neighbors command.
R1(conf)#ip route 2.2.3.0/24 2.2.2.2
R1(conf)#ip route bfd
R1(conf)#do show bfd neighbors
* - Active session role
Ad Dn - Admin Down
C - CLI
I - ISIS
O - OSPF
R - Static Route (RTM)
LocalAddr RemoteAddr Interface State Rx-int Tx-int Mult Clients
2.2.2.1 2.2.2.2 Te 4/24/1 Up 100 100 4 R
To view detailed session information, use the show bfd neighbors detail command, as shown in the examples in Displaying BFD
for BGP Information.
Establishing Static Route Sessions on Specic Neighbors
You can selectively enable BFD sessions on specic neighbors based on a destination prex-list.
When you establish a BFD session using the ip route bfd command, all the next-hop neighbors in the static route become part of the
BFD session. Starting with Dell Networking OS release 9.11.0.0, you can enable BFD sessions on specic next-hop neighbors. You can
specify the next-hop neighbors to be part of a BFD session by including them in a prex-list.
Prex lists are used in route maps and route ltering operations. You can use prex lists as an alternative to existing access lists (ACLs). A
prex is a portion of the IP address. Prex lists constitute any number of bits in an IP address starting from the far left bit of the far left
Bidirectional Forwarding Detection (BFD)
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