FW: Using BGP to force inbound and outbound routing through particular routes

[spam]

I recently made a request to get a cable modem connection at my home.  I
went for one of those $29.95 for three month specials in case I run afoul of
some rules prohibiting what I am going to do.  I already have a multi-T1
connection with a Class C block and BGP running on my Cisco 3640 router, and
was looking to become multi-homed.  The cable connection is via bridge/DHCP
cable modem, and was going to hook it up to the Cisco 3640.  I have already
done the research and know from what block of IP addresses I will be
assigned, and the BGP route tables/peers.

I would like to use BGP to force inbound and outbound routing only through
particular peers, Sprint (AS 1239) and UUNET (AS 701).  I have been reading
Practical BGP by Whate, McPherson and Sangli and this appears to be
possible.  However, do my adjacent routers need to support BGP in order for
this to work?  Could I use other routing protocols to accomplish this, or
would this require knowledge of all possible downstream router IP addresses?

Edward W. Ray

RE: FW: Using BGP to force inbound and outbound routing through particular routes

[Edward W. Ray]

Yes, you are correct

I have decided to go for my CCIE:Security and need some practice before the
lab exam. 

My only choices for multi-homing at home are T1s/DS3s... And cable.  I
already have a 3-T1 setup where the Class C block is homed now.  This is my
main business line and hosts my DNS, Web, Mail servers and VPN connections.
The ISP I use is has punched a hole in their Class B to allow my Class C
block to leak through.

At some point I may get a business class cable line.  But since I do not
know if what I am doing will violate Roadrunner's AUP and/or cause them to
disconnect me, I decided to go with the $29.95 special.

My ISP already peers with Level3, and Roadrunner peers with Level3 (AS3356)
and AOL (AS 1668).  My goal is to block all routes via Roadrunner/Level3 and
force all inbound and outbound traffic via Roadrunner to go through AS 1668
only.


Edward W. Ray

-Original Message-
From: Mike Damm [mailto:[EMAIL PROTECTED] 
Sent: Wednesday, November 02, 2005 12:22 PM
To: spam
Subject: Re: FW: Using BGP to force inbound and outbound routing through
particular routes

Let me see if I understand what you are saying...

You have a real network with routers, T1 lines, all that jazz. And you'd
like to multihome with a cable modem? Right?

  -Mike


On 11/2/05, spam [EMAIL PROTECTED] wrote:

 I recently made a request to get a cable modem connection at my home.  
 I went for one of those $29.95 for three month specials in case I run 
 afoul of some rules prohibiting what I am going to do.  I already have 
 a multi-T1 connection with a Class C block and BGP running on my Cisco 
 3640 router, and was looking to become multi-homed.  The cable 
 connection is via bridge/DHCP cable modem, and was going to hook it up 
 to the Cisco 3640.  I have already done the research and know from 
 what block of IP addresses I will be assigned, and the BGP route
tables/peers.

 I would like to use BGP to force inbound and outbound routing only 
 through particular peers, Sprint (AS 1239) and UUNET (AS 701).  I have 
 been reading Practical BGP by Whate, McPherson and Sangli and this 
 appears to be possible.  However, do my adjacent routers need to 
 support BGP in order for this to work?  Could I use other routing 
 protocols to accomplish this, or would this require knowledge of all
possible downstream router IP addresses?

 Edward W. Ray