From: Gupta, Gopal (NWCC) (gopal.gupta@hp.com)
Date: Fri Feb 15 2008 - 06:33:46 ARST
Have you tried "Telnet 54.1.1.254:179" to see if you get connected
through it.
-----Original Message-----
From: Cristian Ionescu [mailto:cristian.ionescu@omnilogic.ro]
Sent: Friday, February 15, 2008 13:54
To: Gupta, Gopal (NWCC)
Cc: Cisco certification
Subject: Re: BGP - Connection refused by remote host
No....if it was auth on BB i would have a different debug output....
something with bad authentication..............and i do not have such
kind of message.
So in BB there is no authentication configured
Gupta, Gopal (NWCC) wrote:
> Hi Cristian,
>
> Check if md5 Authentication has been configured on BB....
>
> HTH
> Gops
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
> Of Cristian Ionescu
> Sent: Thursday, February 14, 2008 18:10
> To: Cisco certification
> Subject: BGP - Connection refused by remote host
> Importance: Low
>
> Hi GS
>
> I have a strange situation with a "simple" BGP peering session.
> I have 2 router connected over FR in different AS-es and i want to
> establish a peering session between them. Let's say i do not know the
> config of BB.
>
> AS100 - - - - - AS54
> R6 <----------> BB
>
> The config of R6 is:
>
> R6#
> interface Loopback0
> ip address 150.1.6.6 255.255.255.0
> !
> interface Serial0/0/0
> ip address 54.1.1.6 255.255.255.0
> !
> router bgp 100
> no synchronization
> bgp log-neighbor-changes
> neighbor 54.1.1.254 remote-as 54
> no auto-summary
> !
>
>
> BB is directly connected and the peer address is 54.1.1.254 (i have
> ping to this address)
>
> I get the following debug output:
>
> *Feb 14 11:33:31.259: BGP: 54.1.1.254 open active, local address
> 54.1.1.6
> TCB45114344 created
> *Feb 14 11:46:32.839: TCB45114344 setting property TCP_WINDOW_SIZE (0)
> 4511D1C8
> *Feb 14 11:46:32.839: TCB45114344 setting property TCP_MD5KEY (5) 0
> *Feb
> 14 11:46:32.839: TCB45114344 setting property TCP_TOS (11) 4511D1A8
> *Feb
> 14 11:46:32.839: TCB45114344 setting property TCP_OUT_TTL (24)
> 46B25A2A *Feb 14 11:46:32.839: TCP: Random local port generated 53511
> *Feb 14
> 11:46:32.839: TCB45114344 bound to 54.1.1.6.53511 *Feb 14
11:46:32.839:
> TCP: sending SYN, seq 664141347, ack 0 *Feb 14 11:46:32.839: TCP0:
> Connection to 54.1.1.254:179, advertising MSS 1460 *Feb 14
11:46:32.839:
> TCP0: state was CLOSED -> SYNSENT [53511 -> 54.1.1.254(179)] *Feb 14
> 11:46:32.839: TCP0: state was SYNSENT -> CLOSED [53511 ->
> 54.1.1.254(179)] *Feb 14 11:46:32.839: TCP0: bad seg from 54.1.1.254
> -- closing
> connection: port 53511 seq 0 ack 664141348 rcvnxt 0 rcvwnd 0 len 0
> *Feb
> 14 11:46:32.843: TCP0: connection closed - remote sent RST *Feb 14
> 11:46:32.843: TCB 0x45114344 destroyed *Feb 14 11:33:31.259: BGP:
> 54.1.1.254 open failed: Connection refused by remote host, open active
> delayed 29499ms (32000ms max, 28% jitter)
>
> Can u please tell me where is the problem? What is the cause of this
> kind of error message?
>
> Regards
> Cristian Ionescu
>
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