Questions tagged [bfd]
For questions about Bidirectional Forwarding Detection (BFD), where it is a network protocol used to detect faults between two forwarding engines connected by a link. It is also explained in RFC5880.
11 questions
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BFD issue with BGP support on Cisco 9396PX
I have following BGP configuration and trying to reduce my convergence time with help of BFD but having hard time.
router bgp 1111
log-neighbor-changes
address-family ipv4 unicast
network 22....
- 4,389
3
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1
answer
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Use BFD on a Virtual-Template Interface
I would like to know how I can configure Bidirectional Forward Detection on a Virtual-Template interface. Tested on IOSv and IOS-XE (ISR-4451):
router#configure terminal
Enter configuration commands,...
- 1,729
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0
answers
730
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BFD down - "matches wrong session" (SRX)
We have a Juniper SRX talking to a Dell.
One of the BFD sessions has a problem. The Juniper reports it as being up, the Dell reports it as being down.
In the BFD trace on the Juniper, I see messages ...
- 175
3
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1
answer
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Configuring BFD for OSPFv3 between IOS-XE and JunOS
i need to implement BFD on a IGP Link with dual-Stack OSPFv3 between an IOS-XE device (ASR903) and a Juniper MX480.
i'm running BFD for Dual-Stack OSPFv3 members on many links between IOS-XE and IOS-...
- 534
1
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1
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capturing specific BFD packets using tcpdump
I'm troubleshooting a problem with my site-to-site VPN at one location. I've narrowed it down to the link being up, but traffic dropping due to routing problems. I'm running ospf with over ipsec ...
- 462
1
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2
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BFD Echo packet
could you explain how the BFD Echo packet is forwarded between the neighbors?
RouterA -------------- RouterB
The echo packet's source IP is RouterA and destination IP is also RouterA. So when ...
- 383
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2
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BFD on BGP at ASR 1k
I'm setting up BFD on BGP between ASR1k and ASR9k.
On 1k #show bfd neighbors details dosn't produce any output. Seems like BFD is not running.
CPU Proccess running on 1k:
BFD HW EVENT, BFD IPV6 ...
- 1,587
2
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2
answers
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What is the difference between UDLD and BFD?
I understand is UDLD is almost BFD for layer2. Meaning in a control plane and forwarding plane separated router architecture BFD if running on the control plane can detect control plane failures but ...
- 23
1
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0
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BFD support for OSPF vyatta 6.2?
Is it possible to get support for BFD for OSPF on vyatta 6.2?
I cannot find any information about it on the internet. The only thing I've seen is that the support is available on Brocade Vyatta 5400 ...
- 183
7
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1
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Cisco: Reliable fast BGP failover when mixing BGP NHT and BFD
When running BFD on interfaces between two directly connected iBGP and IGP neighbours, is it more stable/reliable to use BFD for fast IGP reaction times and BGP Next Hop Tracking for faster BGP ...
- 5,310
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Cisco: Using carrier-delay with BFD on the same interface
Will lowering the carrier-delay on an interface configuration interfere with using BFD on the same interface?
If I configure carrier-delay msec 0 on an Ethernet interface the RIB is automatically ...
- 5,310