Re: BGP, TCP server-client

so what is the solution?

On Tue, Oct 13, 2009 at 7:57 AM, Bryan Bartik <bbartik_at_ipexpert.com> wrote:

> I don't think collision detection happens every time. Section 6.8 of RFC
> 4271 states:
>
> "Note that a connection collision cannot be detected with connections that
> are in Idle, Connect, or Active states."
>
> I think some further debugging and packet captures would be required to
> determine if the router is following the RFC or not.
>
> On Tue, Oct 13, 2009 at 3:17 AM, Marcel Lammerse <m.lammerse_at_mac.com>
> wrote:
>
> > I just labbed this up and, to my surprise, I got the same results.
> > According to rfc 4271, the bgp router-id should determine which side
> becomes
> > the server and which becomes the client during a connection collision.
> This
> > should be a deterministic process. But in my lab it made no difference
> and I
> > got random results. Why?
> >
> > The neighbor transport command seems to lock the client/server role down.
> > The passive side is the server, the active side is the client.
> >
> >
> > On 13/10/2009, at 15:57 , Marko Milivojevic wrote:
> >
> > Have you tried:
> >>
> >> neighbor X.X.X.X transport connection-mode active
> >>
> >> Out of curiosity - is this a lab requirement, or are you trying to do
> >> something weird in real life? :-)
> >>
> >> --
> >> Marko
> >> CCIE #18427 (SP)
> >> My network blog: http://cisco.markom.info/
> >>
> >> On Tue, Oct 13, 2009 at 03:49, ospfv2 <ospfv2_at_gmail.com> wrote:
> >>
> >>> Hi Experts
> >>>
> >>> afaik to make bgp router as tcp client, we can set the router-id
> >>> higher or put update-source command. is that correct ?
> >>>
> >>> but i found out if we reload each of the router,sometime the client
> >>> become the server.
> >>> how to make the assigment permanent ?
> >>>
> >>> any comments ?
> >>>
> >>> thx
> >>>
> >>>
> >>>
> >>> R1# sh run
> >>> interface FastEthernet0/0
> >>> B ip address 192.168.1.1 255.255.255.0
> >>>
> >>> router bgp 100
> >>> B no synchronization
> >>> B neighbor 192.168.1.2 remote-as 200
> >>> B no auto-summary
> >>>
> >>> R1#sh ip bgp nei | in port
> >>> Local host: 192.168.1.1, Local port: 179
> >>> Foreign host: 192.168.1.2, Foreign port: 11001
> >>>
> >>>
> >>>
> >>>
> >>> R2#sh run
> >>> interface FastEthernet0/0
> >>> B ip address 192.168.1.2 255.255.255.0
> >>>
> >>> router bgp 200
> >>> B no synchronization
> >>> B neighbor 192.168.1.1 remote-as 100
> >>> B neighbor 192.168.1.1 update-source FastEthernet0/0
> >>> B no auto-summary
> >>>
> >>>
> >>> R2# sh ip bgp nei | in port
> >>> Local host: 192.168.1.2, Local port: 11001
> >>> Foreign host: 192.168.1.1, Foreign port: 179
> >>>
> >>
> >>
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>
>
> --
> Bryan Bartik
> CCIE #23707 (R&S), CCNP
> Sr. Support Engineer - IPexpert, Inc.
> URL: http://www.IPexpert.com <http://www.ipexpert.com/>
>
>
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>
> _______________________________________________________________________
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Received on Tue Oct 13 2009 - 09:37:11 ART