At 4:04 PM -0400 2002/07/27, Paul Schultz wrote:
If you connect to the same transit(s) in both cities you can announce more specific networks with no-export set, keep most of your external traffic off your own network, and not cause the entire world to know about your more specific advertisements.
Right, but he's already explained that he is unable to connect to the same two providers in both cities, because one of them doesn't have a presence in both cities.
Responsible yet lacking some redundancy: connect to the same single provider in both locations and announce more specific networks w/ no-export.
That doesn't help if that one provider goes Tango-Uniform.
Irresponsible yet gaining redundancy: connect to a different provider in each region and announce more specifics. no-export not an option, longer prefixes heard globally.
Can we gain redundancy by connecting to a different provider in each city, but still find a way to be responsible?
Responsible and overall best: connect to the same 2+ providers in both locations and announce more specifics locally in each region/city/whatever with no-export.
As said above, this isn't possible. I'd like to learn what could be done in this kind of situation that would allow the desired redundancy, while also being responsible. I'm not a manager of a large network (where I might have this kind of problem myself), nor am I employed at a large ISP (where my customers might have this kind of problem). But I would like to learn. -- Brad Knowles, <brad.knowles@skynet.be> "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." -Benjamin Franklin, Historical Review of Pennsylvania.