Dear All,

I am suspecting issue on bird,pls refer response are

Question:  you cannot ping across your IX, you need to look lower than BIRD to figure out the problem.

Ans: Yes I can ping the IP from switch connected to bird server. However not able to ping from bird server.

 

Question: I would try to answer questions like: Is ARP resolving IPs to MACs? 

Ans: Yes ARP is resolving IPs to MACS

 

Question: Is the problem isolated to a single BIRD server only? 

Yes the problem occurs now on new one I am installing, the other BIRD installed later are working properly

 Question:  We are using BIRD 1.3.9. Can you confirm which version of bird does not have this issues.

Question Is it only IPv4 problem only,

Yes it is an IPv4 problem,

 

or IPv6 as well?

Looking forward for your help pls.

Regards,

Ajai Kumar

On 3 August 2017 at 21:02, Janvier Rwakagabo <janvier.r@ricta.org.rw> wrote:

Find my comments in red.

 

Thanks

 

Regards,

 

Janvier R.

 

From: Bird-users [mailto:bird-users-bounces@network.cz] On Behalf Of Jonathan Stewart
Sent: Thursday, August 3, 2017 4:06 PM
To: Ajai Kumar <joinajay1@gmail.com>
Cc: bird <bird-users@network.cz>
Subject: Re: Hold time expired error

 

If you cannot ping across your IX, you need to look lower than BIRD to figure out the problem.

I can ping the IP through IX

 

 

I would try to answer questions like: Is ARP resolving IPs to MACs? 

Yes ARP is resolving IPs to MACS

 

Is the problem isolated to a single BIRD server only? 

Yes the problem occurs now on new one I am installing, the other BIRD installed later are working properly

 

Is it only IPv4 problem only,

Yes it is an IPv4 problem,

 

or IPv6 as well?

 

If you can answer some of these questions, you'll get closer to finding the root cause, I expect.

 

Cheers,

Jonathan

 

 

 

On Thu, Aug 3, 2017 at 2:25 AM, Ajai Kumar <joinajay1@gmail.com> wrote:

Dear All,

We are facing problem with few peers in our IX.   Frequently they get Hold Timer Expired Error and they are not able to ping our route server IP. After shut no shut this problem resolves for sometime.  One log message appended

bgp_hold_timeout:4690: NOTIFICATION sent to X.X.X.X (External AS 132953): code 4 (Hold Timer Expired Error), Reason: holdtime expired for X.X.X.X (External AS 132953), socket buffer sndcc: 57 rcvcc: 0 TCP state: 4, snd_una: 728368567 snd_nxt: 728368624 snd_wnd: 15744 rcv_nxt: 429172199 rcv_adv: 429188583, hold timer out 90s, hold timer remain 0s

Requesting for help pls.

Regards,

Ajai Kumar

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     Jonathan

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