363
292BConfiguring BFD for MPLS TE tunnels
To run BFD on an MPLS TE tunnel, configure both the local and remote devices as described
in
855HTable 35.
Table 35 Configurations on the local and remote devices
BFD session
establishment
mode
Node type
Execute the "mpls
bfd enable"
command?
Execute the
"mpls bfd"
command?
Configure the
discriminator
keyword?
Static mode
Local Yes Yes Yes
Remote Yes Yes Yes
Dynamic mode
Local Yes Yes No
Remote Yes No N/A
Follow these guidelines to configure BFD for an MPLS TE tunnel:
• To establish a static BFD session, ensure that the local and remote discriminators configured
locally are identical with the remote and local discriminators configured on the remote device,
respectively.
• The source address of the BFD session is the MPLS LSR ID of the local device. Before you
configure BFD for the LSP tunnel, configure an MPLS LSR ID for the local device. Make sure a
route is available on the remote device to reach the MPLS LSR ID.
• On a BFD session established in static mode, the ingress node and egress node both operate
in active mode. On a BFD session established in dynamic mode, the egress node operates in
active mode and the ingress node operates in passive mode. Executing the bfd session
init-mode command on the ingress or egress node does not change the node's operating
mode.
• If both BFD and FRR are enabled for an MPLS TE tunnel, set the BFD detection interval for
tunnel connectivity verification to be longer than that for FRR. Otherwise, the BFD session for
MPLS TE tunnel connectivity verification will be down during an FRR switchover.
To configure BFD for MPLS TE tunnels:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enable BFD for MPLS.
mpls bfd enable
By default, BFD for MPLS is
disabled.
3. Enter the view of the MPLS
TE tunnel interface.
interface tunnel
number
N/A
4. Configure BFD to verify
MPLS TE tunnel
connectivity.
mpls
bfd
[
discriminator
local
local-id
remote
remote-id ]
[
template
template-name ]
By default, BFD is not configured
to verify MPLS TE tunnel
connectivity.
116B
Displaying MPLS OAM
Execute display commands in any view.
Task Command
Display BFD information for LSP
tunnels or MPLS TE tunnels.
display mpls bfd
[
ipv4
ipv4-address mask-length |
te tunnel
tunnel-number ]
To Next Page
Loading...
