I enabled traceoptions, but I did not find which AS the remote site tried to connect to.
Oct 11 02:50:10.174796 BGP RECV 172.31.1.1+64272 -> 172.31.2.1+179
Oct 11 02:50:10.174815 BGP RECV message type 3 (Notification) length 21
Oct 11 02:50:10.174827 BGP RECV Notification code 2 (Open Message Error) subcode 2 (bad peer AS number)
Oct 11 02:50:10.177903 BGP RECV 172.31.1.1+64272 -> 172.31.2.1+179
Oct 11 02:50:10.178046 bgp_peer_close_and_restart: closing peer 172.31.1.1 (External AS 1111), state is 5 (OpenConfirm) event RecvNotify
Oct 11 02:50:10.178923 bgp_event: peer 172.31.1.1 (External AS 1111) old state OpenConfirm event RecvNotify new state Idle
Oct 11 02:52:38.344999 BGP RECV 172.31.1.1+50117 -> 172.31.2.1+179
Oct 11 02:52:38.345804 BGP RECV message type 1 (Open) length 59
Oct 11 02:52:38.345989 BGP RECV version 4 as 1111 holdtime 90 id 172.31.1.1 parmlen 30
Oct 11 02:52:38.346007 BGP RECV MP capability AFI=1, SAFI=1
Oct 11 02:52:38.346017 BGP RECV Refresh capability, code=128
Oct 11 02:52:38.346026 BGP RECV Refresh capability, code=2
Oct 11 02:52:38.346693 BGP RECV Restart capability, code=64, time=120, flags=
Oct 11 02:52:38.346830 BGP RECV 4 Byte AS-Path capability (65), as_num 1111
Oct 11 02:52:38.352306 task_set_option_internal: task BGP_1111_3333.172.31.1.1+50117 socket 115 option RecvBuffer(0) value 16384
Oct 11 02:52:38.354905 bgp_process_4byte_aspath_cap():312 AS4-Peer 172.31.1.1 (External AS 1111)(RECV): 4 byte AS Cap value stored 1111
Oct 11 02:52:38.355047 bgp_event: peer 172.31.1.1 (External AS 1111) old state OpenSent event RecvOpen new state OpenConfirm
Oct 11 02:52:38.515913 BGP RECV 172.31.1.1+50117 -> 172.31.2.1+179
Oct 11 02:52:38.515939 BGP RECV message type 3 (Notification) length 21
Oct 11 02:52:38.515953 BGP RECV Notification code 2 (Open Message Error) subcode 2 (bad peer AS number)
Oct 11 02:52:38.516991 BGP RECV 172.31.1.1+50117 -> 172.31.2.1+179
Oct 11 02:52:38.517129 bgp_peer_close_and_restart: closing peer 172.31.1.1 (External AS 1111), state is 5 (OpenConfirm) event RecvNotify
Oct 11 02:52:38.522272 bgp_event: peer 172.31.1.1 (External AS 1111) old state OpenConfirm event RecvNotify new state Idle
The remote site was configured as follows:
set routing-instances S1-101 protocols bgp group TovMX1 type external
set routing-instances S1-101 protocols bgp group TovMX1 multihop
set routing-instances S1-101 protocols bgp group TovMX1 local-address 172.31.1.1
set routing-instances S1-101 protocols bgp group TovMX1 local-as 1111
set routing-instances S1-101 protocols bgp group TovMX1 neighbor 172.31.2.1 peer-as 2222
I am wondering whether I can find 2222 in the log on my site.
thanks a lot !!
Original Message:
Sent: 10-11-2021 05:48
From: STEVE PULUKA
Subject: Anyway to find which AS the remote site tries to peer with?
My recollection is the standard messages log only says the AS is a mismatch
show log messages
And you need to configure bgp trace options to get a log with all the details.
https://www.juniper.net/documentation/en_US/junos/topics/topic-map/bgp-troubleshooting.html
------------------------------
Steve Puluka BSEET - Juniper Ambassador
IP Architect - DQE Communications Pittsburgh, PA (Metro Ethernet & ISP)
http://puluka.com/home
Original Message:
Sent: 10-11-2021 00:02
From: Unknown User
Subject: Anyway to find which AS the remote site tries to peer with?
I can find remote AS number from traceoptions, but it seems I could not find which AS the remote tries to peer with. Anyway to find it out ?
Say, remote AS is 1111, my AS is 2222, but the remote site peers with 3333. Can I find this without asking the remote site ?
thanks !!