iBGP and eBGP order of priority conflict

[tedauction]

Hello, I have an iBGP AS flanked by two eBGP AS.

Within my two eBGP AS's I am using AS prepending to prioritise route paths.

The problem is that I am finding when I pass routes from an eBGP AS to the iBGP AS that the default local preference value (100) in iBGP is taking precedence over the eBGP AS prepending (as expected due to the BGP order of priority).

Therefore, is there any way to make my iBGP AS prefer the prepending metric rather than the local preference metric ?

Thank you kindly.

[MHM Cisco World]

If you not change LP it be same for both ibgp and ebgp even if it not appear in show ip bgp,

There is other criteria which effect select of ibgp, can i see

Show ip bgp x.x.x.x 

[balaji.bandi]

Please post the configuraiton example and show output for us to understand better.

[paul.driver]

Hello

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@tedauction wrote:

Hello, I have an iBGP AS flanked by two eBGP AS.

Within my two eBGP AS's I am using AS prepending to prioritise route paths.

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As-prepending "WITHIN" your own asn really isnt applicable, and if you try to prepend your own asn to ebgp routes then it wont work.

For traffic engineering within your internal bgp domain for egress traffic the local preference.attribute would be a preferred method.

[paul driver]

Hello

@tedauction wrote:

Hello, I have an iBGP AS flanked by two eBGP AS.

Within my two eBGP AS's I am using AS prepending to prioritise route paths.

As-prepending "WITHIN" your own asn really isnt applicable, and if you try to prepend your own asn to ebgp routes then it wont work.

For traffic engineering within your internal bgp domain for egress traffic the local preference.attribute would be a preferred method.