Steve, > So, if I understand you right, this is what you would propose, assuming > that you were provider 'A', and it was your /24 you were assigning to > the OP: > > - 'A' routes a /24 to OP > - OP advertises the /24 to provider A and B via BGP with personal local > preferences in place > - A advertises it's aggregate including the /24 to the 'net > - B advertises the more specific /24 prefix to the 'net > - OP uses an ASN from the private range, which both A & B must agree to > honour > > I'd really like to understand this, because I've never had to deal with > a situation where I've received a prefix from one ISP and needed to > multi-home with it. (I have my own ARIN prefix). > > Will the more specific /24 route advertised to the 'net by B not be the > preferred route at all times?
"A" would normally advertise the aggregate + the /24 as long as he still wants to put some traffic on the invoice sent to OP ;-) Good for routing table growth *sigh Sascha -- Sascha E. Pollok, CCNP E-Mail: [EMAIL PROTECTED] Manager Network Operations Tel: +49 (0)40 374919-10 IPHH Internet Port Hamburg GmbH Fax: +49 (0)40 374919-29 Grosse Reichenstrasse 27 AG Hamburg, HRB 76071 D-20457 Hamburg Geschaeftsfuehrung: Axel G. Kroeger Germany _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
