Re: Verizon BGP

[Jason T. Carnevale]

The problem is not that Verizon can not advertise another providers IP space it is that Venison by policy DOES NOT route other provider's IP space. What is trying to be accomplished here is that Jin Tam is trying to dual home his site, which is normal. Verizon requires that a customer get their own IP space from Arin to do this. Verizon is well aware of the longest match rule, but to route one ISPs address space to multiple ISPs, (even if it is a more specific route) is asking for global routing problems, which is why Verizon and other providers do not allow this. You will also find that large ISPs do not except BGP routes more specific than /21. I would refer to Internet Routing Architectures for more information on setting up a dual homed BGP session with your ISP. I also must state that people that respond to these types of posts should not assume all the facts are presented by the poster and with that in mind should not assume that the parties involved are high school idiots. Just my 2 cents. -Jason     On Mon, 9 Oct 2000, Jin Tam wrote: > Does anyone here peer with Verizon or work for the NOC. These guys are > telling me that I can't advertise an address block that doesn't belong to > them. So, what the hell is the point of a BGP session if I can't advertise > the same address through 2 or more providers. Also, I pointed my advertised > address at Null0 so that there would be a route in the table. They are > telling me that all the traffic will be dropped at the router. I had to well it would, except that: 1. you are no doubt pointing an aggregate to null0, and the actual routes which have meaning are more specific. 2. you are using a high administrative distance on that route > explain to their networking team about the longest match rule. Are these > guys hiring high school grads for the NOC team? > > **NOTE: New CCNA/CCDA List has been formed. For more information go to > http://www.groupstudy.com/list/Associates.html > _________________________________ > UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html > FAQ, list archives, and subscription info: http://www.groupstudy.com > Report misconduct and Nondisclosure violations to [EMAIL PROTECTED] > ----------------------------------------------- Brian Feeny, CCNP, CCDP [EMAIL PROTECTED] Network Administrator ShreveNet Inc. (ASN 11881) **NOTE: New CCNA/CCDA List has been formed. For more information go to http://www.groupstudy.com/list/Associates.html _________________________________ UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html FAQ, list archives, and subscription info: http://www.groupstudy.com Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]