Hello guys,
I buy VPS with BGP and try setup BGP session but got strange problem.
VPS support send me this information to setup session:
"Please peer with 185.144.XXX.YYY, you will need to enable eBGP multihop.
Our ASN is XXXX.
The IPv6 peer address is 2a04:9dc0:XX:YYY::1"
My bird configuration looks like this:
---------------------------------------
router id 85.204.XXX.YYY;
# debug protocols all;
protocol device {
scan time 10;
}
protocol static {
route 2a04:9dc0:XX:YYY::1/128 via "eth0";
}
protocol kernel {
device routes;
import none;
scan time 15;
export filter {
if net = 2a04:9dc0:XX:YYY::1/128 then reject;
if source = 2a04:9dc0:XX:YYY::1/128 then reject;
accept;
};
}
protocol bgp Romania
{
description "Romania link local";
local as YYYYY;
source address 2a04:9dc0:X:YY::f0;
graceful restart on;
default bgp_local_pref 200;
multihop 2;
neighbor 2a04:9dc0:XX:YYY::1 as XXXX;
import filter {
if net = 2a04:9dc0:XX:YYY::1/128 then reject;
if source = 2a04:9dc0:XX:YYY::1/128 then reject;
if bgp_path.len > 49 then reject;
accept;
};
export filter {
if net = 2a07:1c44:3511::/48 then accept;
reject;
};
}
---------------------------------------
In logs got it:
Aug 8 16:21:41 ro-bgp bird6: Romania: Error: Hold timer expired
Aug 8 16:24:02 ro-bgp bird6: Romania: Error: Hold timer expired
Aug 8 16:27:07 ro-bgp bird6: Romania: Error: Hold timer expired
Aug 8 16:35:58 ro-bgp bird6: Romania: Error: Hold timer expired
Aug 8 16:37:25 ro-bgp bird6: Romania: Error: Hold timer expired
Aug 8 16:39:27 ro-bgp bird6: Romania: Error: Hold timer expired
Aug 8 16:41:57 ro-bgp bird6: Romania: Error: Hold timer expired
Aug 8 16:56:19 ro-bgp bird6: Romania: Error: Hold timer expired
Aug 8 17:00:29 ro-bgp bird6: Romania: Error: Hold timer expired
Aug 8 17:06:10 ro-bgp bird6: Romania: Error: Hold timer expired
Aug 8 17:09:58 ro-bgp bird6: Romania: Error: Hold timer expired
Aug 8 17:13:01 ro-bgp bird6: Romania: Error: Hold timer expired
Aug 8 17:15:08 ro-bgp bird6: Romania: Error: Hold timer expired
Aug 8 17:18:15 ro-bgp bird6: Romania: Error: Hold timer expired
Aug 8 17:22:58 ro-bgp bird6: Romania: Error: Hold timer expired
Aug 8 17:29:17 ro-bgp bird6: Romania: Error: Hold timer expired
Aug 8 17:31:49 ro-bgp bird6: Romania: Error: Hold timer expired
Aug 8 17:35:17 ro-bgp bird6: Romania: Error: Hold timer expired
Aug 8 17:40:08 ro-bgp bird6: Romania: Error: Hold timer expired
root@bgp:~# birdc6 show protocols all Romania
BIRD 1.6.3 ready.
name proto table state since info
Romania BGP master up 16:22:37 Established
Description: Romania link local
Preference: 100
Input filter: (unnamed)
Output filter: (unnamed)
Routes: 11560 imported, 5 exported, 11560 preferred
Route change stats: received rejected filtered ignored
accepted
Import updates: 11560 0 0 0
11560
Import withdraws: 0 0 --- 0
0
Export updates: 11586 11560 21 ---
5
Export withdraws: 0 --- --- ---
0
BGP state: Established
Neighbor address: 2a04:9dc0:XX:YYY::1
Neighbor AS: XXXX
Neighbor ID: 185.144.XXXX
Neighbor caps: refresh restart-aware AS4
Session: external multihop AS4
Source address: 2a04:9dc0:X:YY::f0;
Hold timer: 27/90
Keepalive timer: 23/30
root@bgp:~# birdc6 show protocols all Romania
BIRD 1.6.3 ready.
name proto table state since info
Romania BGP master start 16:24:05 Idle BGP Error: Hold
timer expired
Description: Romania link local
Preference: 100
Input filter: (unnamed)
Output filter: (unnamed)
Routes: 0 imported, 0 exported, 0 preferred
Route change stats: received rejected filtered ignored
accepted
Import updates: 0 0 0 0
0
Import withdraws: 0 0 --- 0
0
Export updates: 0 0 0 ---
0
Export withdraws: 0 --- --- ---
0
BGP state: Idle
Neighbor address: 2a04:9dc0:XX:YYY::1
Neighbor AS: XXXX
Error wait: 57/120
Last error: BGP Error: Hold timer expired
Best Regards
Marek Krolikowski
