CTED]>
Sent: Sunday, January 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
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
standard
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
standard
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 inte
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 incom
>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
thing? ;->
-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
>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
>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
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 and
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 b
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 you
> 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 t
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 many
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,
AT&T, 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
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
16 matches
Mail list logo