Re: AS numbers - Is there a global crisis?

ry 21, 2001 11:03 PM Subject: Re: AS numbers - Is there a global crisis? I could not give you exact information, when I have looked at peering policies in the past it normally depends on the type of address space involved. If the addresses came from what was typically a Class C space they may

Re: AS numbers - Is there a global crisis?

I've heard that most ISPs will filter less than /19. If this is true, then only the ISP who owns the aggregate route will get heard by most other ISPs. Can anyone confirm at which point most ISPs filter? I know at a minimum most won't accept more specific than /24. I finally got some evil

Re: AS numbers - Is there a global crisis?

I could not give you exact information, when I have looked at peering policies in the past it normally depends on the type of address space involved. If the addresses came from what was typically a Class C space they may not require a large aggregation of IP addresses. It is pretty much

Re: AS numbers - Is there a global crisis?

I could not give you exact information, when I have looked at peering policies in the past it normally depends on the type of address space involved. If the addresses came from what was typically a Class C space they may not require a large aggregation of IP addresses. It is pretty much

Re: AS numbers - Is there a global crisis?

I wouldn't think that's t much of an issue. As far as I understand it, you only get assigned a public AS number if you're a m_a_j_o_r provider--like PSInet, ATT, MCI, etc... If you're a mid-sized to smaller organization, you probably can get by using a private AS from a larger provider. Can

Re: AS numbers - Is there a global crisis?

To get an ASN you have to show that you either have a unique routing policy or that you are multihomed to separate providers. Sure, there are lots of companies that have multiple internet connections, but how many *really* need to have redundant connections to separate ISPs? Not really that

Re: AS numbers - Is there a global crisis?

since there are other ways to achieve redundancy. Please advise what "other ways" there are to achieve redundancy for 'inbound' traffic via the Internet. Brian --- John Neiberger [EMAIL PROTECTED] wrote: To get an ASN you have to show that you either have a unique routing policy or that

Re: AS numbers - Is there a global crisis?

Inbound is a little more difficult than outbound, but I believe you can work with your ISP to accomplish this. You could have redundant connections to a single ISP if you were using address space assigned from them only. You really wouldn't even need BGP for this, but if you wanted to use it

Re: AS numbers - Is there a global crisis?

Brian, Hi! Funny you bring this up, I just got a phone call on it today. Basically, you can have two seperate ISPs and have incoming redundant connections without using BGP. ISP1 will provide a block of IPs from a portion of their CIDR block to the "company." Since this is part of ISP1s CIDR

RE: AS numbers - Is there a global crisis?

If there is a global crisis would it not be cataloged here? http://www.telstra.net/ops/bgptable.html Subject: Re: AS numbers - Is there a global crisis? _ FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct

Re: AS numbers - Is there a global crisis?

I've been studying BGP, but something that keeps bothering me when I study it is that there are less than 65000 , (64511 to be exact) public AS numbers. It would seem to me that these would quickly run as out, as I would think that there are that many corporations world-wide that connected to the

Re: AS numbers - Is there a global crisis?

Brian, Hi! Funny you bring this up, I just got a phone call on it today. Basically, you can have two seperate ISPs and have incoming redundant connections without using BGP. ISP1 will provide a block of IPs from a portion of their CIDR block to the "company." Since this is part of ISP1s CIDR

RE: AS numbers - Is there a global crisis?

? ;- -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]] On Behalf Of Howard C. Berkowitz Sent: Friday, January 19, 2001 2:28 PM To: [EMAIL PROTECTED] Subject:Re: AS numbers - Is there a global crisis? Brian, Hi! Funny you bring this up, I just got a phone

RE: AS numbers - Is there a global crisis?

By having ISP1 advertise both its aggregate and the more-specific, the routing system conceptually will contain: 192.168.0.0/16 ISP1 192.168.2.0/24 ISP1 192.168.2.0/24 ISP2 CL: And two more routes go into the global tables. Wasn't CIDR supposed to stop this kind of

Re: AS numbers - Is there a global crisis?

Very true, thanks Howard, I left that out. -B ""Howard C. Berkowitz"" [EMAIL PROTECTED] wrote in message news:p05001919b68e6e6b973a@[63.216.127.98]... Brian, Hi! Funny you bring this up, I just got a phone call on it today. Basically, you can have two seperate ISPs and have incoming