H3C LS-3100-52P-OVS-H3 Operation Manual - page 828
1-8
To do…
Use the command…
Remarks
Enable BFD on the IS-IS
interface
isis bfd enable
Required
Not enabled by default
For details about IS-IS, refer to IS-IS Configuration in the IP Routing Volume.
Configuring BFD for RIP
RIP periodically sends route update requests to neighbors. If no route update response for a route is
received within the specified interval, RIP considers the route unreachable. This mechanism cannot
detect link faults quickly.
After BFD is configured for RIP, when BFD detects a broken link, RIP can quickly age out the
unreachable route before the update timer expires.
RIP with BFD support provides two link detection modes:
z
Single-hop detection in BFD echo packet mode for a directly connected neighbor. In this mode, a
BFD session is established only when the neighbor has route information to send.
z
Bidirectional detection in BFD control packet mode for an indirectly connected neighbor. In this
mode, a BFD session is established only when both ends have routes to send and BFD is enabled
on the receiving interface.
Single-hop detection in BFD echo packet mode
Follow these steps to configure BFD for RIP (single-hop detection in BFD echo packet mode):
To do…
Use the command…
Remarks
Enter system view
system-view
—
Configure the source IP
address of BFD echo
packets
bfd echo-source-ip ip-address
Required
By default, no source IP
address is configured for
BFD echo packets.
Enter interface view
interface interface-type
interface-number
—
Enable BFD on the RIP
interface
rip bfd enable
Required
Disabled by default.