Maintaining Ldp Sessions; Configuring Bfd For Mpls Ldp - HP 12500 Series Configuration Manual

Configuration procedure
To configure LDP label filtering policies:
To do...
Enter system view
Enter MPLS LDP view
Configure a label
acceptance control policy
Configure a label
advertisement control
policy
NOTE:
For two neighboring LSRs, configuring a label acceptance control policy on the upstream LSR and
configuring a label advertisement control policy on the downstream LSR can achieve the same effect. To
reduce the network load, HP recommends configuring only label advertisement control policies.

Maintaining LDP sessions

This section describes how to detect communication failures between remote LDP peers and reset LDP
sessions.

Configuring BFD for MPLS LDP

MPLS itself cannot detect a neighbor failure or link failure in time. If communication between two remote
LDP peers fails, the LDP session will be down, and as a result, MPLS forwarding will fail. By cooperating
with bidirectional forwarding detection (BFD), MPLS LDP can be quickly aware of communication failures
between remote LDP peers, improving performances of existing MPLS networks.
NOTE:
For more information about BFD, see
•
• An LSP can be bound to only one BFD session.
To configure BFD for MPLS LDP:
To do...
Enter system view
Enter MPLS LDP remote peer
view
Enable BFD for MPLS LDP
NOTE:
The cooperation of MPLS LDP and BFD can be used to detect communication failures between remote LDP
peers only. For related configuration examples, see the chapter "Configuring VPLS."
Use the command...
system-view
mpls ldp
accept-label peer peer-id ip-prefix ip-prefix-name
advertise-label ip-prefix ip-prefix-name [ peer
peer-ip-prefix-name ]
High Availability Configuration Guide
Use the command...
system-view
mpls ldp remote-peer
remote-peer-name
remote-ip bfd
19
Remarks
—
—
Optional
Not configured by
default.
Required
Not configured by
default.
.
Remarks
—
—
Required
Disabled by default