Hi SwiNOGers,
We've the problem that sunrise is advertising our prefixes from our backup provider instead of the ones from our primary. This is most likely because our backup provider is a downstream customer from sunrise.
Our prefixes then get advertised to level3 (and other sunrise upstream peers). Sunrise seems to be level3 downstream customer and prefer our prefixes from sunrise instead of our primary provider, too. The consequence is that most other ISPs are seeing only our prefixes over sunrise and our backup provider.
Sunrise changed their as-communities recently so that's no longer possible for our backup provider to influence their local-pref.
I think this might be a common problem in primary / backup BGP scenarios. Any ideas how to solve it?
Maybe someone from sunrise can contact me off-list?
Thanks and best regards Marco
On Thu, Sep 04, 2008 at 09:52:49AM +0200, Marco Fretz wrote:
Hi SwiNOGers,
We've the problem that sunrise is advertising our prefixes from our backup provider instead of the ones from our primary. This is most likely because our backup provider is a downstream customer from sunrise.
Our prefixes then get advertised to level3 (and other sunrise upstream peers). Sunrise seems to be level3 downstream customer and prefer our prefixes from sunrise instead of our primary provider, too. The consequence is that most other ISPs are seeing only our prefixes over sunrise and our backup provider.
Sunrise changed their as-communities recently so that's no longer possible for our backup provider to influence their local-pref.
I think this might be a common problem in primary / backup BGP scenarios. Any ideas how to solve it?
Prepend your own AS a few times.
On Thu, September 4, 2008 09:52, Marco Fretz wrote:
Sunrise changed their as-communities recently so that's no longer possible for our backup provider to influence their local-pref.
Where did you get this information from ? Sunrise definitely supports customer-settable communities to alter local pref.
Regards, -jr
Johannes Resch wrote:
On Thu, September 4, 2008 09:52, Marco Fretz wrote:
Sunrise changed their as-communities recently so that's no longer possible for our backup provider to influence their local-pref.
Where did you get this information from ? Sunrise definitely supports customer-settable communities to alter local pref.
http://www.db.ripe.net/whois?form_type=simple&full_query_string=&sea... the part describing local-pref influencing is in the "OBSOLETE SECTION".
On Thu, September 4, 2008 10:32, Marco Fretz wrote:
Johannes Resch wrote:
Where did you get this information from ? Sunrise definitely supports customer-settable communities to alter local pref.
http://www.db.ripe.net/whois?form_type=simple&full_query_string=&sea... the part describing local-pref influencing is in the "OBSOLETE SECTION".
This whole section clearly needs to be updated. However, Sunrise BGP customers can always request the current community listing / supported options through their contacts at Sunrise.
Regards, -jr
Sunrise changed their as-communities recently so that's no longer possible for our backup provider to influence their local-pref.
Did you tried to mark your routes with the L3-communities for local-pref? There is a good chance your transit-providers will leave them on your route and thus make you able to influence your routing within L3.
Roman wrote:
There is a good chance your transit-providers will leave them on your route...
As long as i've been responsible: No
Cheers, Günti
-----Original Message----- From: swinog-bounces@lists.swinog.ch [mailto:swinog-bounces@lists.swinog.ch] On Behalf Of Roman Hochuli Sent: Thursday, September 04, 2008 12:16 PM To: swinog@swinog.ch Subject: Re: [swinog] primary / backup BGP multi homed issue
Sunrise changed their as-communities recently so that's no longer possible for our backup provider to influence their local-pref.
Did you tried to mark your routes with the L3-communities for local-pref? There is a good chance your transit-providers will leave them on your route and thus make you able to influence your routing within L3.
-- Best regards, Roman Hochuli Operations Manager
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Phone: +41 44 562 30 40 Fax: +41 44 562 30 41 URL: www.nexellent.ch X-NCC-RegID: ch.nexellent
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Claudio Jeker -
Johannes Resch -
Marco Fretz -
Robert.Guentensperger＠swisscom.com -
Roman Hochuli