On Tue, 3 Apr 2001, Sheldon Dubrowin wrote:
I think the suggestion was to get multihomed to the same ISP. You can still get redundant links to the same ISP and you won't be adding BGP entries on the Core Routers. The benefit to this in a BGP world is that the ISP will deal with which link to use, perhaps to different POPs.
The problem is that currently ISPs are a lot less reliable than telcos or hardware. You tend to get an upstream provider having a problem ( lasting say a minute or more ) once every week or so while Telco or Hardware problems will occur every year or so. One of the numbers is 50 times bigger than the other. As for using different pops it doesn't always work. We have 2 US pops currently. One has 2 links to different pops of the same provider while the other has 2 links to that provider and a backup link to another. Last night the main providers entire California network when to hell for about 2 hours. One pop was almostly completely offline while the other was mostly working for the entire time. With the currently level of reliability, redundancy of providers *is* pretty much required. -- Simon Lyall. | Newsmaster | Work: simon.lyall@ihug.co.nz Senior Network/System Admin | | Home: simon@darkmere.gen.nz ihug, Auckland, NZ | Asst Doorman | Web: http://www.darkmere.gen.nz