Matt,
I don't think you would be out of line asking the ISP why so many hops are
needed. I would run traceroutes from hosts and the WAN terminating router
first and make sure you are routing well inhouse. Identify if/where packets
are being dropped. Make note of all the hops and if/where the latency is
being introduced. Is any hop in particular constantly giving higher times.
Then call your ISP and send them copies of your traceroutes as proof. Are
you responsible for your own router? If so, check the BGP tables, are your
table versions incrementing often? What sites do you route to most often?
Are those sites on the ISP's network or do they hand-off the traffic at a
peering point? This greatly introduces latency and can make for difficult
discussions regarding peering conditions from one ISP to another. Often
people criticize the larger ISPs. But it's nice when the source and
destination are on the same ISP network. You can then expect them to carry
your traffic in a timely manner. And they can't cop out saying it's the
other ISPs fault.
Coming from the ISP world, I always appreciate when the customer does their
homework rather than automatically blaming the ISP.
All IMHO and HTH,
Chris
-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Friday, April 13, 2001 2:20 PM
To: [EMAIL PROTECTED]
Subject: Routing Performance Perspective [7:495]
I am hoping someone could provide me some experienced perspective for the
following situation:
We utilize a somewhat 'new on the block' co-location facility, and while
they otherwise provide fantastic service I have some questions about the
routing performance.
Over the past few weeks, I have noticed a degradation of service on our
colocator-provided connection. (significant latency, and loss of packets)
As a result, I have been tracerouting our corporate offices from our
co-location facility (only 30 miles away) and it takes anywhere from 13 to
16 hops to reach it's destination. I have been doing this on a
semi-scientific basis (whenever I remember) and the results are usually the
same, but closer to 16 hops than 13. When I traceroute from our corporate
offices to our co-location facility the results are usually 6 to seven hops
using the same semi-scientific methodology as stated above.
My concerns are that end-user experience are being affected by apparent
sub-optimal routing.
The question I ask of the Grand-Master BGP geniuses is: do I have a valid
complaint regarding sub-optimal routing from our co-locator?
Thanks!
Matthew
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