nanog mailing list archives
Re: Does anyone multihome anymore?
From: Mike Tancsa <mike () sentex net>
Date: Wed, 22 Aug 2007 16:32:55 -0400
At 03:26 PM 8/22/2007, Steve Gibbard wrote:
Thought about that way, there's nothing "Draconian" about turning off a connection (or a switch, or a router, or any other redundant component) that's not doing what you want it to.
While I agree in general with what you are getting at, one point to add is cost. All these goals are constrained within a business case to make. In my case, I could turn off my Cogent connection, but I would have ended up punishing connectivity to other networks that are off Cogent in Toronto only. This would have forced them to get to me via Cogent's pop in Chicago, which was overloaded. So to fix my connectivity into AS577, I would have to hose another group of users in Toronto. Now I could of course add more diversity by adding another connection in Toronto. But, I have to justify the business case to do that. Is it worth the extra money for the few times this particular type of outage happens ? In my case probably not. The cost to privately peer with 577 is quite high and there are no good transit providers at 151 Front that have good connectivity to Bell other than via Chicago.
Instead, you're taking advantage of a main feature of your design. If your other providers are doing 95th percentile billing, you even have a day and a half per month that you can leave a connection down at no financial cost. The alternative, as you seem to have noticed, is to spend your day stressing out about your network not working properly, and complaining about being helpless. You don't need redundancy for that.
I didnt mean to sound complaintive. My original post to NANOG was more of trying to get details as to what was going on beyond the rather basic info 1st level support and the cogent status page was saying. After the original post, various questions / comments came up as to what could and could not be done in this situation.
---Mike
Current thread:
- Re: Cogent latency / congestion, (continued)
- Re: Cogent latency / congestion Adrian Chadd (Aug 20)
- Market for diversity (was: Re: Cogent latency / congestion) Sean Donelan (Aug 21)
- Re: Market for diversity (was: Re: Cogent latency / congestion) David Lesher (Aug 21)
- Re: Market for diversity (was: Re: Cogent latency / congestion) Marshall Eubanks (Aug 21)
- Re: Market for diversity (was: Re: Cogent latency / congestion) Deepak Jain (Aug 21)
- Does anyone multihome anymore? (was: Re: Cogent latency / congestion) Security Admin (NetSec) (Aug 22)
- Message not available
- Re: Does anyone multihome anymore? (was: Re: Cogent latency / congestion) Mike Tancsa (Aug 22)
- Message not available
- Re: Does anyone multihome anymore? Mike Tancsa (Aug 22)
- Re: Does anyone multihome anymore? Dan Armstrong (Aug 22)
- Re: Does anyone multihome anymore? Steve Gibbard (Aug 22)
- Re: Does anyone multihome anymore? Mike Tancsa (Aug 22)
- Re: Market for diversity (was: Re: Cogent latency / congestion) Andy Davidson (Aug 25)
- Re: Market for diversity (was: Re: Cogent latency / congestion) Justin M. Streiner (Aug 25)
- Re: Market for diversity (was: Re: Cogent latency / congestion) Sean Donelan (Aug 25)
- Re: Market for diversity Jason LeBlanc (Aug 26)
- Re: Market for diversity Deepak Jain (Aug 26)
- Re: Market for diversity Bill Stewart (Aug 27)
- Re: Market for diversity (was: Re: Cogent latency / congestion) Justin M. Streiner (Aug 21)
- Re: Cogent latency / congestion Jeff Shultz (Aug 21)