Hi all,
Various providers can use different suppliers to provide backbone type
services. An example could be where a person has 2 networks configured in
the same building, even on the same cable (Hub) with two routers one going
via a wan link to supplier A the other on a wan link to suplier B. Supplier
A use an ISP in the USA and supplier B uses a New Zealand supplier. It is
quite feasible to have 25+ hops to get to a PC sitting beside you.
Just a thought. By the way I have seen similar actually happen.
Teunis,
Hobart, Tasmania
Australia
On Friday, April 13, 2001 at 05:57:56 PM, Kane. Christopher A. wrote:
> 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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