H3C Technologies H3C S12500-X Series Switches - Manual (Page 106)

92
53B
Configuring BFD for OSPF
BFD provides a single mechanism to quickly detect and monitor the connectivity of links between OSPF
neighbors, which improves the network convergence speed. For more information about BFD, see High
Availability Configuration Guide.
OSPF supports the following BFD detection modes:
• Bidirectional control detection—Requires BFD configuration to be made on both OSPF routers on
the link.
• Single-hop echo detection—Requires BFD configuration to be made on one OSPF router on the link.
230B
Configuring bidirectional control detection
Step Command Remarks
1. Enter system view. system-view N/A
2. Enter interface view.
interface interface-type
interface-number
N/A
3. Enable BFD bidirectional control
detection.
ospf bfd enable
By default, BFD bidirectional control
detection is disabled.
Both ends of a BFD session must be on
the same network segment and in the
same area.
231B
Configuring single-hop echo detection
Step Command Remarks
1. Enter system view. system-view N/A
2. Configure the source address of echo
packets.
bfd echo-source-ip ip-address
By default, the source address
of echo packets is not
configured.
3. Enter interface view.
interface interface-type
interface-number
N/A
4. Enable BFD single-hop echo
detection.
ospf bfd enable echo
By default, BFD single-hop
echo detection is disabled.
54B
Configuring OSPF FRR
A link or router failure on a path can cause packet loss and even routing loop until OSPF completes
routing convergence based on the new network topology. FRR uses BFD to detect failures and enables
fast rerouting to minimize the impact of link or node failures.