Bfd for is-is configuration example, Network requirements, Configuration procedure – H3C Technologies H3C S5560 Series Switches User Manual
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Flags: D-Direct, R-Added to Rib, L-Advertised in LSPs, U-Up/Down Bit Set
Level-2 IPv4 Forwarding Table
-----------------------------
IPv4 Destination IntCost ExtCost ExitInterface NextHop Flags
-------------------------------------------------------------------------------
14.14.14.0/24 10 NULL vlan200 Direct D/L/-
44.44.44.44/32 10 NULL Loop0 Direct D/-/-
12.12.12.0/32 10 NULL
22.22.22.22/32 10 NULL
Flags: D-Direct, R-Added to Rib, L-Advertised in LSPs, U-Up/Down Bit Set
The output shows that the neighbor information and routing information on Switch A and Switch B have
not changed during the active/standby switchover on Switch S. The neighbors are unaware of the
switchover.
BFD for IS-IS configuration example
Network requirements
•
As shown in
, run IS-IS on Switch A, Switch B and Switch C so that can reach each other
at the network layer.
•
After the link over which Switch A and Switch B communicate through the Layer-2 switch fails, BFD
can quickly detect the failure and notify IS-IS of the failure. Switch A and Switch B then communicate
through Switch C.
Figure 46 Network diagram
Device Interface
IP address
Device
Interface
IP address
Switch A
Vlan-int10
10.1.0.102/24
Switch B
Vlan-int10 10.1.0.100/24
Vlan-int11
11.1.1.1/24
Vlan-int13
13.1.1.1/24
Loop0
121.1.1.1/32
Loop0
120.1.1.1/32
Switch C
Vlan-int11
11.1.1.2/24
Vlan-int13
13.1.1.2/24
Configuration procedure
1.
Configure IP addresses for interfaces. (Details not shown.)