[j-nsp] BGP error messages

[lbarrios at NAVEGA.com]

Hello,
Im running iBGP between two routers m7i.  the session was working ok but 
since one week ago the sessios is resetting pretty frequently.  im running 
the 7.3 Rel 1.5 version. Today  the session is up during 3 minutes and the 
session gets down,  ang 30 sec after the session gets up again. 


Sep  1 14:15:36 BGP SEND Notification code 4 (Hold Timer Expired Error) 
subcode 0 (unused)
Sep  1 14:15:36 bgp_peer_close: closing peer 192.168.1.250 (Internal AS 
65510), state is 6 (Established)
Sep  1 14:15:36 bgp_event: peer 192.168.1.250 (Internal AS 65510) old 
state Established event HoldTime new state Idle
Sep  1 14:15:36 bgp_event: peer 192.168.1.250 (Internal AS 65510) old 
state Idle event Start new state Active
Sep  1 14:16:08 bgp_event: peer 192.168.1.250 (Internal AS 65510) old 
state Active event ConnectRetry new state Connect
Sep  1 14:16:08 bgp_event: peer 192.168.1.250 (Internal AS 65510) old 
state Connect event Open new state OpenSent
Sep  1 14:16:08 bgp_send: sending 55 bytes to 192.168.1.250 (Internal AS 
65510)
Sep  1 14:16:08 
Sep  1 14:16:08 BGP SEND 192.168.1.249+2329 -> 192.168.1.250+179
Sep  1 14:16:08 BGP SEND message type 1 (Open) length 55
Sep  1 14:16:08 BGP SEND version 4 as 65510 holdtime 180 id 192.168.1.249 
parmlen 26
Sep  1 14:16:08 BGP SEND MP capability AFI=1, SAFI=128
Sep  1 14:16:08 BGP SEND Refresh capability, code=128
Sep  1 14:16:08 BGP SEND Refresh capability, code=2
Sep  1 14:16:08 BGP SEND Restart capability, code=64, time=120, flags=
Sep  1 14:16:08 BGP SEND Restart capability AFI=1, SAF=128, 
Flags=ForwardingSaved
Sep  1 14:16:08 
Sep  1 14:16:08 BGP RECV 192.168.1.250+2424 -> 192.168.1.249+179
Sep  1 14:16:08 BGP RECV message type 1 (Open) length 55
Sep  1 14:16:08 BGP RECV version 4 as 65510 holdtime 180 id 192.168.1.250 
parmlen 26
Sep  1 14:16:08 BGP RECV MP capability AFI=1, SAFI=128
Sep  1 14:16:08 BGP RECV Refresh capability, code=128
Sep  1 14:16:08 BGP RECV Refresh capability, code=2
Sep  1 14:16:08 BGP RECV Restart capability, code=64, time=120, flags=
Sep  1 14:16:08 BGP RECV Restart capability AFI=1, SAF=128, 
Flags=ForwardingSaved
Sep  1 14:16:08 bgp_pp_recv: NOTIFICATION sent to 192.168.1.250 (Internal 
AS 65510): code 6 (Cease) subcode 7 (Connection collision resolution), 
Reason: dropping 192.168.1.250 (Internal AS 65510), connection collision 
prefers 192.168.1.250+2424 (proto)
Sep  1 14:16:08 bgp_send: sending 21 bytes to 192.168.1.250 (Internal AS 
65510)
Sep  1 14:16:08 
Sep  1 14:16:08 BGP SEND 192.168.1.249+2329 -> 192.168.1.250+179
Sep  1 14:16:08 BGP SEND message type 3 (Notification) length 21
Sep  1 14:16:08 BGP SEND Notification code 6 (Cease) subcode 7 (Connection 
collision resolution)
Sep  1 14:16:08 bgp_pp_recv: dropping 192.168.1.250 (Internal AS 65510), 
connection collision prefers 192.168.1.250+2424 (proto)
Sep  1 14:16:08 bgp_peer_close: closing peer 192.168.1.250 (Internal AS 
65510), state is 4 (OpenSent)
Sep  1 14:16:08 bgp_event: peer 192.168.1.250 (Internal AS 65510) old 
state OpenSent event Stop new state Idle
Sep  1 14:16:08 bgp_event: peer 192.168.1.250 (Internal AS 65510) old 
state Idle event Start new state Active
Sep  1 14:16:08 bgp_event: peer 192.168.1.250 (Internal AS 65510) old 
state Active event Open new state OpenSent
Sep  1 14:16:08 bgp_send: sending 55 bytes to 192.168.1.250 (Internal AS 
65510)
Sep  1 14:16:08 
Sep  1 14:16:08 BGP SEND 192.168.1.249+179 -> 192.168.1.250+2424
Sep  1 14:16:08 BGP SEND message type 1 (Open) length 55
Sep  1 14:16:08 BGP SEND version 4 as 65510 holdtime 180 id 192.168.1.249 
parmlen 26
Sep  1 14:16:08 BGP SEND MP capability AFI=1, SAFI=128
Sep  1 14:16:08 BGP SEND Refresh capability, code=128
Sep  1 14:16:08 BGP SEND Refresh capability, code=2
Sep  1 14:16:08 BGP SEND Restart capability, code=64, time=120, flags=
Sep  1 14:16:08 BGP SEND Restart capability AFI=1, SAF=128, 
Flags=ForwardingSaved
Sep  1 14:16:08 bgp_event: peer 192.168.1.250 (Internal AS 65510) old 
state OpenSent event RecvOpen new state OpenConfirm
Sep  1 14:16:09 bgp_event: peer 192.168.1.250 (Internal AS 65510) old 
state OpenConfirm event RecvKeepAlive new state Established



This are the logs in one of the routers.  i was checking the links between 
the routers and its not look as congestion problem .   have you any idea 
about the problem .   The configuration en both router is very simple .


lbarrios at JuniperNetworkPE_012_PA# show protocols bgp group INTERNAL 
type internal;
local-address 192.168.1.249;
family inet-vpn {
    unicast;
}
authentication-key "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX"; ## SECRET-DATA
neighbor 192.168.1.250 {
    description XXXXXX;
    hold-time 180;
}

i changed the hold-time just for troubleshooting . It had configuered as 
default 90 seg.  im runnig LDP between the routers , but is a bgp issue. 

thanks

luis 


thanks for your help.


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