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BFD for LDP LSP vs BFD for LDP Tunnel

Created: Feb 29, 2020 09:20:00Latest reply: Feb 29, 2020 09:41:05 308 1 0 0 0
  Rewarded HiCoins: 0 (problem resolved)

Hi,

I found two similar command in the documentation, one is mpls bfd-trigger, and another is mpls bfd-trigger-tunnel.

In the documentation, it’s said BFD for LDP tunnel can be used to instruct a specific LDP upper-layer application to perform a protection switchover, then, in which situation should we enable the BFD for LDP LSP?


  • x
  • convention:

Featured Answers
chenhui
Admin Created Feb 29, 2020 09:41:05

@user_3534491 Hi,
From the expert, a tunnel might contain only one LSP, or multi LSPs; BFD for LSP is used to detect the connection of a single LSP, and triggering the LSP FRR to protect the service. While BFD for Tunnel simultaneously detects the connectivity of all the LSPs and triggers upper-layer services FRR (VPN FRR / BGP LSP FRR).
LDP Auto FRR relies on the automatic rerouting function of IGP. After running the frr (IS-IS) or frr (OSPF) command to enable the IGP automatic rerouting function, the LDP Auto FRR function is automatically enabled.
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  • x
  • convention:

All Answers
chenhui
chenhui Admin Created Feb 29, 2020 09:41:05

@user_3534491 Hi,
From the expert, a tunnel might contain only one LSP, or multi LSPs; BFD for LSP is used to detect the connection of a single LSP, and triggering the LSP FRR to protect the service. While BFD for Tunnel simultaneously detects the connectivity of all the LSPs and triggers upper-layer services FRR (VPN FRR / BGP LSP FRR).
LDP Auto FRR relies on the automatic rerouting function of IGP. After running the frr (IS-IS) or frr (OSPF) command to enable the IGP automatic rerouting function, the LDP Auto FRR function is automatically enabled.
View more
  • x
  • convention:

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