R2511-HP MSR Router Series Layer 3 - IP Routing Configuration Guide(V5)

<RouterA> debugging bfd event

<RouterA> debugging bfd scm

<RouterA> terminal debugging

%Jul 27 10:18:18:672 2007 RouterA BFD/4/LOG:Sess[12.1.1.1/12.1.1.2,

Ethernet1/1,Ctrl], Sta: UP->DOWN, Diag: 1

*Jul 27 10:18:18:672 2007 RouterA BFD/7/EVENT:Send sess-down Msg,

[Src:12.1.1.1,Dst:12.1.1.2,Ethernet1/1,Ctrl], instance:0, protocol:STATIC

*Jul 27 10:18:19:172 2007 RouterA BFD/7/EVENT:Receive Delete-sess,

[Src:12.1.1.1,Dst:12.1.1.2,Ethernet1/1,Ctrl], Direct, Instance:0x0, Proto:STATIC

*Jul 27 10:18:19:172 2007 RouterA BFD/7/EVENT:Notify driver to stop receiving bf

# Display the static route information again. Router A communicates with Router B over the static

route passing Router C now.

<RouterA> display ip routing-table protocol static

Public Routing Table : Static

Summary Count : 2

Static Routing table Status : <Active>

Summary Count : 1

Destination/Mask Proto Pre Cost NextHop Interface

120.1.1.0/24 Static 65 0 10.1.1.100 Eth1/2

Static Routing table Status : < Inactive>

Summary Count : 1

Destination/Mask Proto Pre Cost NextHop Interface

120.1.1.0/24 Static 60 0 12.1.1.2 Eth1/1

BFD for static routes configuration example (indirect next hop)

Network requirements

In Figure 4, Router A has a route to interface Loopback 1 (2.2.2.9/32) on Router B, with the outgoing

interface Ethernet 1/1. Router B has a route to interface Loopback 1 (1.1.1.9/32) on Router A, with the

outgoing interface Ethernet 1/1. Router D has a route to 1.1.1.9/32, with the outgoing interface Ethernet

1/1, and a route to 2.2.2.9/32, with the outgoing interface Ethernet 1/2.

Configure a static route to subnet 120.1.1.0/24 on Router A, configure a static route to subnet

121.1.1.0/24 on Router B, and enable BFD for both routes. Configure a static route to subnet 120.1.1.0/24

and a static route to subnet 121.1.1.0/24 on both Router C and Router D. When the link between Router

A and Router B through Router D fails, BFD can detect the failure immediately and Router A and Router

B can communicate through Router C.