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OSPF BFD and FRR

OSPF BFD and FRR

Created: Nov 20, 2018 13:26:26Latest reply: Nov 21, 2018 13:48:20 1056 3 0 0 0
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Hi everyone,

If we configure BFD with OSPF and Fast rerout (FRR) with BFD then both are used for fast switching means if one link down then directly shift traffic to another link...then where we use BFD and where FRR...whats the difference.

Please help me! Thank you!

  • x
  • convention：

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ViktorG
Created Nov 21, 2018 13:48:20

Hi there!
Any High availability mechanisms need to:
- Compute Backup path
- Fast Failure Detection - in your case BFD is used
- Fast reroute mechanism - after failure switchover to backup path.
So, in your case:
- BFD will detect path/peer/link failure
- FRR will trigger switchover to backup path when BFD session is down
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  • x
  • convention：

faysalji
faysalji Created Nov 29, 2018 04:42:12 (0) (0)
Thanks  
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Mysterious.color
Mysterious.color Created Nov 20, 2018 13:29:37

for bfd it is used to determine the reacheblility along the road between to peers
for ffr i don't know
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  • x
  • convention：
ViktorG
ViktorG Created Nov 21, 2018 13:48:20

Hi there!
Any High availability mechanisms need to:
- Compute Backup path
- Fast Failure Detection - in your case BFD is used
- Fast reroute mechanism - after failure switchover to backup path.
So, in your case:
- BFD will detect path/peer/link failure
- FRR will trigger switchover to backup path when BFD session is down
View more
  • x
  • convention：

faysalji
faysalji Created Nov 29, 2018 04:42:12 (0) (0)
Thanks  
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