From: Dan C (cdan2154@gmail.com)
Date: Mon Feb 18 2008 - 23:48:35 ARST
Hi All,
On this existing configs I would add ebgp multi-hop to the nei, hard code
the router id to the loo 0 and clear the ip bgp process.
Cheers,
Dan
On Feb 18, 2008 5:09 AM, Cristian Ionescu <cristian.ionescu@omnilogic.ro>
wrote:
> yes....there are problem with the e-mails...
>
> The config are very simple:
> 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
> neighbor 54.1.1.254 update-source Loopback0
> no auto-summary
>
> for the BB i can give u the config...but in the lab u can not get into
> BB...
>
> -----Original Message-----
> From Tony Schaffran (GS) <groupstudy@cconlinelabs.com>
> Sent Sun 2/17/2008 5:35 PM
> To M_A_Jones@DellTeam.com; cristian.ionescu@omnilogic.ro;
> ccielab@groupstudy.com
> Subject RE: BGP - Connection refused by remote host
>
> I asked to see the configs for both sides yesterday morning.
>
> It is strange that my email has not been posted yet.
>
>
> Tony Schaffran
> Network Analyst
> CCIE #11071
> CCNP, CCNA, CCDA,
> NNCDS, NNCSS, CNE, MCSE
>
> www.cconlinelabs.com
> Your #1 choice for online Cisco rack rentals.
>
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> M_A_Jones@DellTeam.com
> Sent: Friday, February 15, 2008 8:15 AM
> To: cristian.ionescu@omnilogic.ro; ccielab@groupstudy.com
> Subject: RE: BGP - Connection refused by remote host
>
> Looks like the remote router before peering is asking for MD5
> authentication...Your local router is not using MD5 so the TCP session
> is being tore down..
>
> *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)
>
>
> Michael Jones
> Network Engineer
> Global Network Operations
> Dell Inc. | Information Technology
> W. 512.723.3268 | C. 512.966.6908
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Cristian Ionescu
> Sent: Thursday, February 14, 2008 6:40 AM
> To: Cisco certification
> Subject: BGP - Connection refused by remote host
>
> 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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> applicable law or may constitute as attorney work product.
> If you are not the intended recipient, you are hereby notified
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> communication is strictly prohibited. If you have received this
> communication in error, notify us immediately by telephone and
> (i) destroy this message if a facsimile or (ii) delete this message
> immediately if this is an electronic communication.
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