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DES-7200 Configuration Guide Chapter 3 MPLS Reliability Configuration
3-41
DES-7200(config-mpls-router)# bfd
bind ldp-lsp peer-ip 20.20.20.20
nexthop 3.3.3.1 interface
gigabitEthernet 0/1
local-discriminator 2
remote-discriminator 1
Configure BFD for LDP LSP without handling BFD
session state. The peer IP address of this LSP is
20.20.20.20; the next-hop address is 3.3.3.1; the
egress interface is gigabitEthernet 0/1.
For manual configuration mode: configure my
discriminator as 2 and your discriminator as 1.
If the Ingress LSR is manually configured, then the
Egress LSR shall be manually configured as well,
which means configurations at both ends shall be
symmetrical.
DES-7200(config-bfd-router)# exit
Exit LDP configuration mode.
To disable BFD for LDP LSP, execute "bfd bind backward-lsp-with-ip peer-ip 20.20.20.20
interface gigabitEthernet 0/1" or "no bfd bind ldp-lsp peer-ip 20.20.20.20 nexthop 3.3.3.1
interface gigabitEthernet 0/1".
Caution
1、 BFD for backward direction LSP can adopt IP detection.
2、 Or configure BFD for another LSP
1) BFD for LDP LSP can only support the LDP LSP triggered and
established by the host routing table.
2) One LSP can only be bound with one BFD session.
3) BFD can only be bound on the Ingress of LDP LSP.
3、 If the discriminators are configured manually, then My Discriminator
and Your Discriminator configured on Egress LSR must correspond to
My Discriminator and Your Discriminator configured on Ingress LSP.
3.2.4.4 Display configurations
The following commands are provided by BFD to display various configurations and status
information. Their descriptions are given below:
Command Function
show bfd neighbors [vrf vrf-name] [ipv4
ip-addess [details] | client {ldp-lsp |
backward-lsp-with-ip} [ipv4 ip-addess
[details] | [details]]
Display BFD session details.