You might want to turn on more traceoptions. You are receiving a notification message which should indicate the problem. The notification code and subcode will help to find out the issue.

Truman Boyes

On 22/07/2009, at 3:16 AM, Matthias Gelbhardt wrote:

Hi!

After deleting the local-address (and testing with multihop) I get

Jul 22 09:13:41.322465 advertising receiving-speaker only capabilty to neighbor x.x.x.x (External AS xx) Jul 22 09:13:41.323342 bgp_send: sending 59 bytes to x.x.x.x (External AS xx)
Jul 22 09:13:41.323954
Jul 22 09:13:41.323954 BGP SEND x.x.x.x+52277 -> x.x.x.x+179
Jul 22 09:13:41.325172 BGP SEND message type 1 (Open) length 59
Jul 22 09:13:41.327835
Jul 22 09:13:41.327835 BGP RECV x.x.x.x+179 -> x.x.x.x+52277
Jul 22 09:13:41.329110 BGP RECV message type 1 (Open) length 29
Jul 22 09:13:41.329866
Jul 22 09:13:41.329866 BGP RECV x.x.x.x+179 -> x.x.x.x+52277
Jul 22 09:13:41.331374 BGP RECV message type 3 (Notification) length 21

The strange thing: That has stopped working out of the blue. As this is a provider, we are unable to get the other side.

Matthias

Am 22.07.2009 um 09:04 schrieb Muhammad Aamir:

Dear matthias,

Have u tried this with "multihop", Because you have used local- address in your ebgp config. If local address is your loopback interface then you need to configure multihop. Also please share the remote end config as well if possible.

Regards.

Aamir

On Wed, Jul 22, 2009 at 12:55 PM, Matthias Gelbhardt <[email protected] > wrote:
Hi!

We have a problem with a BGP session. The session is not coming up, and I dont know why. It is a eBGP session:

Log:

Jul 22 08:30:08 muenster /kernel: tcp_auth_ok: Packet from x.x.x.x: 179 missing MD5 digest

tracelog:

Jul 22 08:50:16.426122 bgp_connect_complete: error connecting to x.x.x.x (External AS x): Socket is not connected

tcpdump;

08:49:07.632649 Out IP x.x.x.x.60582 > x.x.x.x.179: S 594093001:594093001(0) win 16384 <mss 1460,nop,wscale 0,nop,nop,timestamp[|tcp]>

config:

group external {
  type external;
  neighbor xx {
      description uplink_;
      local-address xx;
      import import_bgp_;
      inactive: authentication-key "$9$u-xxx"; ## SECRET-DATA
      export [ export_prepend export_bgp_external ];
      peer-as xx;
  }
}

Any ideas?

Leaving the MD5 does not work, I even have restartet the routing process with no luck.

Matthias

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