Reg:Tcp session in BGP

vinod kumar · May 2009

Hi All,

I have a confusion in BGP neighbor establishment.While forming neighbor relationship which router will become server and which will become client.I have read in few books that if both router initiate bgp connection at same time the router with highest router id will become server and drops the connection.

Pleae explain me this.

Thanks

Scott Morris · May 2009

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Do your debugs validate that?

I think you'll find that the device with the higher peer-ip address
actually initiates the connection. There is a backoff timer built in,
so if there's something (like a firewall) blocking the setup, the
lower-ip side will indeed initiate, but it takes a while.

In DLSW, your description of two sessions then dropping one was
accurate!

HTH,

Scott Morris, CCIEx4
(R&S/ISP-Dial/Security/Service Provider) #4713,

JNCIE-M #153, JNCIS-ER, CISSP, et al.

CCSI #21903, JNCI-M, JNCI-ER

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vinod kumar wrote:

Hi All,

I have a confusion in BGP neighbor establishment.While forming
neighbor relationship which router will become server and which will
become client.I have read in few books that if both router initiate bgp
connection at same time the router with highest router id will become
server and drops the connection.

Pleae explain me this.

Thanks

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Reg:Tcp session in BGP

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