%EIGRP: Failed to get client handle from BFD

[lerner cisco]

All,

Need your help to fix the issue on establishing EIGRP neighbourship  . I have switch  configured with EIGRP .

As I found EIGRP neighbourship flapping continuously with error on the console  "%EIGRP: Failed to get client handle from BFD "

Network setup

Switch--- -------------------------------converter device ------------------------ Router

Gig 1/0/25  interface                 fiber to optic

As per logs , look like the BFD configured  on the remote end router device , Please help me to know

1) If router enabled BFD configs , is it mandatory to enable switch end as well to build EIGRP neigbourship

2) If router configured "  bfd interval milliseconds min_rx milliseconds multiplier interval-multiplier "  is this influence  eigrp hello interval and hold time ??

    if it influences I think I need to fine tune hello and hold interval time ????

3) is there any other probability  for this error , like unidirectional traffic , etc ??

2) Switch IOS 12.2( 58)

interface GigabitEthernet1/0/25

no switchport

ip address 10.200.156.1 255.255.255.192

no ip redirects

no ip unreachables

no ip proxy-arp

logging event link-status

load-interval 30

speed 100

duplex full

udld port aggressive

[acampbell]

Hi,

I think you should look at this paper:-

http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/fs_bfd.html#wp1053332

Look at the EIGRP section

http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/fs_bfd.html#wp1047556

Regards,
Alex.
Please rate useful posts.

[lerner cisco]

Thanks for sharing link  , I gone through the document , but its not clear  on the below points

1) If router enabled BFD configs , is it mandatory to enable switch end as well to build EIGRP neigbourship

2)  If router configured "  bfd interval milliseconds min_rx milliseconds  multiplier interval-multiplier "  is this influence  eigrp hello  interval and hold time ??     if it influences I think I need to fine tune hello and hold interval time ????

[Julio Carvajal · Accepted solution]

Hello,

1)In order for a BFD session to be created, you must configure BFD on both systems (or BFD peers). Once BFD has been enabled on the interfaces and at the router level for the appropriate routing protocols, a BFD session is created, BFD timers are negotiated, and the BFD peers will begin to send BFD control packets to each other at the negotiated interval.

So basically what it happens here is that:

- The EIGRP session will be establish between both units,

-One of the EIGRP routers will start a negotiation session to establish a BFD session with it's peer

-Both EIGRP routers will have a BFD session up that will allow them to improve on a big way the convergence time.

2)Totally different stuff, you will be now checking connectivity based on the BFD message exchanges to determine the status of our neigbhor...

So enable it on both sides, build the EIGRP and BFD neigbhor relationship, match the timers of the BFD and we are good to go,

Hope that I could help on this one,

Julio Carvajal