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plisken
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bgp

Sat Nov 10, 2012 8:48 pm

I have a node with two uplinks.
I want bgp choose uplink 1the second uplink must accept if uplink 1 is down.
How should I set up with that Pre-pend Thanks for your help
 
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Re: bgp

Sun Nov 11, 2012 12:48 pm

I have a node with two uplinks.
I want bgp choose uplink 1the second uplink must accept if uplink 1 is down.
How should I set up with that Pre-pend Thanks for your help
BGP does not use traditional metrics but makes routing decisions based on path so the only way to "prefer" first uplink is to insert prepend in the config of the second uplink/peer.

Why you dont's use other solution such as vrrp?

bye
Luciano
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wulfgard
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Re: bgp

Mon Nov 12, 2012 1:55 am

Hello

for agoing traffic ( from you to ISP ) just set higher local-preference for incoming BGP routes

for incoming traffic ( from ISP to you ) just add AS prepend on second ISP

be aware that you will not be able to enforce all incoming traffic from ISP1 because of the way BGP works

A+
Thierry
Last edited by wulfgard on Mon Nov 12, 2012 2:03 am, edited 1 time in total.
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wulfgard
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Re: bgp

Mon Nov 12, 2012 2:02 am

Why you dont's use other solution such as vrrp?

bye
Luciano
How VRRP will help him having primary / secondary upstream with BGP routing ?


Thierry
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plisken
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Re: bgp

Tue Nov 13, 2012 10:30 pm

Thanks for your help i try this
Grt
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Re: bgp

Tue Dec 11, 2012 9:10 am

The initial state of a BGP connection. The BGP speaker is waiting for a start event, generally either the establishment of a TCP connection or the re-establishment of a previous connection.

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