Re: BGP, TCP server-client

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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Received on Tue Oct 13 2009 - 20:17:01 ART