nanog mailing list archives

Re: /24 multihoming issue


From: Kyaw Khine <joekhine () yahoo com>
Date: Wed, 19 Oct 2005 23:17:09 -0700 (PDT)


I opened ticket with both 701 and 19094 when we did
failover 2 weeks ago. Both 701 and 19094 insist that
they just take the route and send it out to the rest
of the world. And at that time, I thought it was RADB
problem and agreed to close the tix.
Now that RADB is fixed, I'm back at square one with
more confusions :(
I will open case with both 701 and 19094 soon. I am
making sure that I'm not missing a smoking gun.

--- "Christopher L. Morrow"
<christopher.morrow () mci com> wrote:



On Wed, 19 Oct 2005, Kyaw Khine wrote:

Hmmm..
When /24 gets to those ISP (direct connected to
19094/telcove), shouldn't they prefer 701/mci
path?

depends on their relationship with 701 probably, and
their internal
decision criteria... they might filter or pref or...
who knows :(

AS-PATH is longer through 19094 than through 701
...
provided that those ISP are accepting/receiving
path
from 701.

yup, looking at route-views.oregon-ix.net there seem
to be plenty of paths
(47 total reported)

Did you open a support ticket with 701?


--- "Christopher L. Morrow"
<christopher.morrow () mci com> wrote:


On Thu, 20 Oct 2005, Jon Lewis wrote:


On Wed, 19 Oct 2005, Kyaw Khine wrote:


routeviews is seeing both paths.

64.9.17.0/24
AS 33105

ISP-A = 701 :)
ISP-B = 19094

You might talk to 701 about why for instance,
all
I see is your
prepended path via 19094 through 3356, 6461,
4323,
and 19962.

Maybe 701 is only propogating your route to
customers?

shouldn't be the case, it's not looking like
it's
tagged anything
'special'. :) the other folks might see telecove
as
a better path
(assuming telecove/19094 is also multihomed to
these
other asn's you have
above)





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