[j-nsp] MX-480 BGP Open message error with unknown subcode.
Misak Khachatryan
m.khachatryan at gnc.am
Fri Jan 24 07:59:05 EST 2014
Here it is:
neighbor xxx.xxx.98.74 {
description SCI;
multihop {
ttl 3;
}
import policy-statement_import_from_AS47623_to_AS49800;
peer-as 47623;
}
neighbor xxxx:xxxx:0:11::2 {
description SCI-IPv6;
multihop {
ttl 3;
}
import ( policy-statement_import_from_AS47623_to_AS49800 &&
ipv6-ebgp-relaxed );
peer-as 47623;
}
# show interfaces ge-2/0/7.367
description SCI_peering;
vlan-id 367;
family inet {
rpf-check {
mode loose;
}
address xx.xx.98.73/30;
}
family inet6 {
rpf-check {
mode loose;
}
address xxxx:xxxx:0:11::1/64;
}
Old config is the same, just without multihop stanza.
Brent McIntosh wrote:
> This is strange for directly connected peers on the same physical segment. Is it possible to share your configuration and IP allocation for the connecting interfaces?
>
>
> Peer1----- /127--------Peer2
> Peer1-------/30-------------Peer2
>
> -----Original Message-----
> From: juniper-nsp [mailto:juniper-nsp-bounces at puck.nether.net] On Behalf Of Misak Khachatryan
> Sent: Friday, January 24, 2014 7:43 AM
> To: juniper-nsp at puck.nether.net >> juniper-nsp
> Subject: Re: [j-nsp] MX-480 BGP Open message error with unknown subcode.
>
> This issue resolved by adding multihop stanza to neighbor, which is pretty weird, as peers use directly connected interface IPs ...
>
> Misak Khachatryan wrote:
>> Hello,
>>
>> I have strange problem on my MX-480. From some time router suddenly
>> drops BGP peering with two customers and session doesn't come up from
>> that time. One peer is IPv4, another one IPv6. Not configuration
>> change done. There are lot of other BGP peers working OK on that router.
>>
>> Here is excerpt from log of one BGP session:
>>
>>
>> Jan 22 12:46:34.412693 bgp_event: peer 2a02:2a50:0:11::2 (External AS
>> 47623) old state Idle event Start new state Active Jan 22
>> 12:46:34.412703 task_timer_ucreate: created timer
>> BGP_47623_49800.2a02:2a50:0:11::2_Connect flags <> Jan 22
>> 12:46:34.412713 task_timer_uset: timer
>> BGP_47623_49800.2a02:2a50:0:11::2_Connect <Touched> set to offset 2:28
>> at 12:49:02 Jan 22 12:47:37.567137 Jan 22 12:47:37.567137 BGP RECV
>> 2a02:2a50:0:11::2+59259 ->
>> 2a02:2a50:0:11::1+179
>> Jan 22 12:47:37.567190 BGP RECV message type 1 (Open) length 45 Jan 22
>> 12:47:37.567198 BGP RECV version 4 as 47623 holdtime 180 id
>> 93.187.163.1 parmlen 16
>> Jan 22 12:47:37.567204 BGP RECV Refresh capability, code=2 Jan 22
>> 12:47:37.567210 BGP RECV 4 Byte AS-Path capability (65), as_num
>> 47623
>> Jan 22 12:47:37.567215 BGP RECV MP capability AFI=2, SAFI=1 Jan 22
>> 12:47:37.567252 task_timer_delete:
>> BGP_47623_49800.2a02:2a50:0:11::2_Connect <Touched> Jan 22
>> 12:47:37.567267 task_set_socket: task
>> BGP_47623_49800.2a02:2a50:0:11::2 socket 112 Jan 22 12:47:37.567278
>> task_set_option_internal: task
>> BGP_47623_49800.2a02:2a50:0:11::2 socket 112 option RecvBuffer(0)
>> value
>> 16384
>> Jan 22 12:47:37.567287 task_set_option_internal: task
>> BGP_47623_49800.2a02:2a50:0:11::2 socket 112 option SendBuffer(1)
>> value
>> 16384
>> Jan 22 12:47:37.567309 task_set_option_internal: task
>> BGP_47623_49800.2a02:2a50:0:11::2+59259 socket 112 option
>> PathMTUDiscovery(26) value 0
>> Jan 22 12:47:37.567333 task_set_option_internal: task
>> BGP_47623_49800.2a02:2a50:0:11::2+59259 socket 112 option DontRoute(5)
>> value 1 Jan 22 12:47:37.567342 task_set_option_internal: task
>> BGP_47623_49800.2a02:2a50:0:11::2+59259 socket 112 option
>> IifRestrict(36) value 1
>> Jan 22 12:47:37.567351 task_set_option_internal: task
>> BGP_47623_49800.2a02:2a50:0:11::2+59259 socket 112 option TTL(15)
>> value 1 Jan 22 12:47:37.567362 task_timer_ucreate: created timer
>> BGP_47623_49800.2a02:2a50:0:11::2+59259_Hold flags <> Jan 22
>> 12:47:37.567373 task_timer_uset: timer
>> BGP_47623_49800.2a02:2a50:0:11::2+59259_Hold <Touched> set to offset
>> 1:30 at 12:49:07
>> Jan 22 12:47:37.567382 bgp_event: peer 2a02:2a50:0:11::2 (External AS
>> 47623) old state Active event Open new state OpenSent Jan 22
>> 12:47:37.567391 advertising graceful restart receiving-speaker-only
>> capability to neighbor 2a02:2a50:0:11::2 (External AS 47623) Jan 22
>> 12:47:37.567401 bgp_4byte_aspath_add_cap():153 AS4-Peer
>> 2a02:2a50:0:11::2 (External AS 47623)(SEND): 4 byte AS capability
>> added, AS 49800 Jan 22 12:47:37.567408 bgp_send: sending 59 bytes to
>> 2a02:2a50:0:11::2 (External AS 47623) Jan 22 12:47:37.567414 Jan 22
>> 12:47:37.567414 BGP SEND 2a02:2a50:0:11::1+179 ->
>> 2a02:2a50:0:11::2+59259
>> Jan 22 12:47:37.567421 BGP SEND message type 1 (Open) length 59 Jan 22
>> 12:47:37.567427 BGP SEND version 4 as 49800 holdtime 90 id
>> 46.19.96.5 parmlen 30
>> Jan 22 12:47:37.567432 BGP SEND MP capability AFI=2, SAFI=1 Jan 22
>> 12:47:37.567436 BGP SEND Refresh capability, code=128 Jan 22
>> 12:47:37.567440 BGP SEND Refresh capability, code=2 Jan 22
>> 12:47:37.567445 BGP SEND Restart capability, code=64, time=120, flags=
>> Jan 22 12:47:37.567450 BGP SEND 4 Byte AS-Path capability (65), as_num
>> 49800
>> Jan 22 12:47:37.567490 bgp_process_4byte_aspath_cap():286 AS4-Peer
>> 2a02:2a50:0:11::2 (External AS 47623)(RECV): 4 byte AS Cap value
>> stored
>> 47623
>>
>> Jan 22 12:47:37.567499 bgp_event: peer 2a02:2a50:0:11::2 (External AS
>> 47623) old state OpenSent event RecvOpen new state OpenConfirm Jan 22
>> 12:47:37.567504 bgp_send: sending 19 bytes to 2a02:2a50:0:11::2
>> (External AS 47623) Jan 22 12:47:37.567517 Jan 22 12:47:37.567517 BGP
>> SEND 2a02:2a50:0:11::1+179 ->
>> 2a02:2a50:0:11::2+59259
>> Jan 22 12:47:37.567524 BGP SEND message type 4 (KeepAlive) length 19
>> Jan 22 12:47:37.567533 bgp_recv_change: peer 2a02:2a50:0:11::2
>> (External AS 47623) receiver changed to bgp_recv_open Jan 22
>> 12:47:37.567540 task_set_socket: task
>> BGP_47623_49800.2a02:2a50:0:11::2+59259 socket 112 Jan 22
>> 12:47:37.568371 task_process_events: recv ready for
>> BGP_47623_49800.2a02:2a50:0:11::2+59259
>> Jan 22 12:47:37.568378 bgp_recv_open: called for peer
>> 2a02:2a50:0:11::2 (External AS 47623) Jan 22 12:47:37.568387 Jan 22
>> 12:47:37.568387 BGP RECV 2a02:2a50:0:11::2+59259 ->
>> 2a02:2a50:0:11::1+179
>> Jan 22 12:47:37.568395 BGP RECV message type 4 (KeepAlive) length 19
>> Jan 22 12:47:37.568426 bgp_peer_established:6685: NOTIFICATION sent to
>> 2a02:2a50:0:11::2 (External AS 47623): code 2 (Open Message Error),
>> Reason: pending close
>> Jan 22 12:47:37.568433 bgp_send: sending 21 bytes to 2a02:2a50:0:11::2
>> (External AS 47623) Jan 22 12:47:37.568439 Jan 22 12:47:37.568439 BGP
>> SEND 2a02:2a50:0:11::1+179 ->
>> 2a02:2a50:0:11::2+59259
>> Jan 22 12:47:37.568446 BGP SEND message type 3 (Notification) length
>> 21 Jan 22 12:47:37.568451 BGP SEND Notification code 2 (Open Message
>> Error) subcode 0 (unspecified error) Jan 22 12:47:37.568461
>> bgp_peer_close: closing peer 2a02:2a50:0:11::2 (External AS 47623),
>> state is 5 (OpenConfirm) Jan 22 12:47:37.568474 bgp_close_socket: peer
>> 2a02:2a50:0:11::2 (External AS 47623) Jan 22 12:47:37.568480
>> task_close: close socket 112 task
>> BGP_47623_49800.2a02:2a50:0:11::2+59259
>> Jan 22 12:47:37.568486 task_reset_socket: task
>> BGP_47623_49800.2a02:2a50:0:11::2+59259 socket 112 Jan 22
>> 12:47:37.568518 task_timer_delete:
>> BGP_47623_49800.2a02:2a50:0:11::2_Hold <Touched> Jan 22
>> 12:47:37.568526 bgp_event: peer 2a02:2a50:0:11::2 (External AS
>> 47623) old state OpenConfirm event OpenFail new state Idle Jan 22
>> 12:47:37.568718 bgp_event: peer 2a02:2a50:0:11::2 (External AS
>> 47623) old state Idle event Start new state Active Jan 22
>> 12:47:37.568733 task_timer_ucreate: created timer
>> BGP_47623_49800.2a02:2a50:0:11::2_Connect flags <> Jan 22
>> 12:47:37.568743 task_timer_uset: timer
>> BGP_47623_49800.2a02:2a50:0:11::2_Connect <Touched> set to offset 2:28
>> at 12:50:05
>>
>>
>> Any clue? Thanks in advance.
>>
>
> --
> Best regards,
> Misak Khachatryan,
> Head of Network Administration
> and Monitoring Department,
> GNC-Alfa CJSC.
> _______________________________________________
> juniper-nsp mailing list juniper-nsp at puck.nether.net https://puck.nether.net/mailman/listinfo/juniper-nsp
>
--
Best regards,
Misak Khachatryan,
Head of Network Administration
and Monitoring Department,
GNC-Alfa CJSC.
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