If you cannot ping across your IX, you need to look lower than BIRD to figure out the problem.
I would try to answer questions like: Is ARP resolving IPs to MACs? Is the problem isolated to a single BIRD server only? Is it only IPv4 problem only, 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 <joinaj...@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 > -- > > (M) +91-9868477444 <+91%2098684%2077444> > Skype ID:erajay > P-mail: joinajay1 at gmail.com > ................................. > Please don't print this email unless you really need to. This will > preserve trees on our planet. > -- Jonathan