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DES-7200 Configuration Guide Chapter 3 MPLS Reliability Configuration
3-37
DES-7200(config-if-type ID)# bfd
interval 50 min_rx 50 multiplier 3
Configure BFD session parameters.
DES-7200(config-if- type ID)# exit
Exit interface configuration mode.
DES-7200(config)# bfd bind
static-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 static 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.
Or:
DES-7200(config)#bfd bind
backward-lsp-with-ip peer-ip
20.20.20.20 interface
gigabitEthernet 0/1 source-ip
10.10.10.10 local-discriminator 2
remote-discriminator 1
Configure BFD for backward direction LSP with IP.
The source IP address of backward direction LSP is
10.10.10.10; the peer IP address is 20.20.20.20;
the egress interface is gigabitEthernet 0/1.
This step configures my discriminator as 2 and your
discriminator as 1.
When configuring BFD for LSP, if backward
direction LSP adopts IP detection, then the positive
direction LSP must be configured with my
discriminator and your discriminator, which must be
configured manually.
DES-7200(config)# exit
Exit global configuration mode.
To disable BFD for static LSP, execute "no bfd bind static-lsp peer-ip 20.20.20.20 nexthop
3.3.3.1 interface gigabitEthernet 0/1" or "bfd bind backward-lsp-with-ip peer-ip 20.20.20.20
interface gigabitEthernet 0/1".
Caution
1. BFD for static LSP can only support the static LSP established by the host
routing table.
2. BFD for backward direction LSP can adopt IP detection.
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.