nanog mailing list archives
Re: Service Providers behaviour for dual homed enterprises
From: William Herrin <bill () herrin us>
Date: Thu, 24 Sep 2015 09:21:02 -0400
On Wed, Sep 23, 2015 at 5:38 PM, Jason Bullen <jmbullen21 () gmail com> wrote:
So if my research is correct, the internet prefers Verizon UNLESS they are a direct AT&T customer then they would use the AT&T circuit. Is this a standard practice that I should assume to encounter?
Hi Jason, That's normal. Verizon does it too. Both have "community" tags which you can attach to your route advertisement. Each will have one that indicates they should give external routes the same "local pref" as the route you announce to them. Tagging your route announcement with the proper community will cause them to route based on AS path length as you expect. Welcome to the little gotchas of using BGP. Regards, Bill Herrin -- William Herrin ................ herrin () dirtside com bill () herrin us Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>
Current thread:
- Service Providers behaviour for dual homed enterprises Jason Bullen (Sep 23)
- Re: Service Providers behaviour for dual homed enterprises Jared Mauch (Sep 23)
- Re: Service Providers behaviour for dual homed enterprises Clinton Work (Sep 24)
- Re: Service Providers behaviour for dual homed enterprises Mark Tinka (Sep 24)
- Re: Service Providers behaviour for dual homed enterprises William Herrin (Sep 24)
- Re: Service Providers behaviour for dual homed enterprises Mark Tinka (Sep 24)
- Re: Service Providers behaviour for dual homed enterprises Stephen Satchell (Sep 24)
- Re: Service Providers behaviour for dual homed enterprises Blake Hudson (Sep 24)
- Re: Service Providers behaviour for dual homed enterprises Jason Bullen (Sep 24)
- Re: Service Providers behaviour for dual homed enterprises Bob Evans (Sep 24)
- Re: Service Providers behaviour for dual homed enterprises Stephen Satchell (Sep 24)
- Re: Service Providers behaviour for dual homed enterprises Blake Hudson (Sep 24)
- Re: Service Providers behaviour for dual homed enterprises Blake Hudson (Sep 24)