Local Peering and Transit - BGP multihoming

ty chan chanty_kh at yahoo.com
Fri May 22 01:14:24 CDT 2009

Yes, i can get sample of configuration via Google search.
but i am looking for best practices and from experience people.

From: "deleskie at gmail.com" <deleskie at gmail.com>
To: ty chan <chanty_kh at yahoo.com>; nanog at nanog.org
Sent: Friday, May 22, 2009 12:42:14 PM
Subject: Re: Local Peering and Transit - BGP multihoming

Google BGP Cisco... Should give you 90% of this.
------Original Message------
From: ty chan
To: nanog at nanog.org
Subject: Local Peering and Transit - BGP multihoming
Sent: May 22, 2009 2:23 AM

Dear all,

In my lab, i manage two ASN (100,200). ASN100 has one transit to ASN300 and local peering to ASN500.
ASN200 has one transit to ASN400. ASN100 do private peering to ASN200. Some policies are required as below:
1. ASN100 customer can only use ASN300 for transit
2. ASN200 customer can only use ASN400 for transit.
3. Local traffic will stay local between ASN100,ASN200 and ASN500.
4. ASN100 and ASN200 are backup each other only if either upstreams is down.

How to configure BGP to meet the above policies? I am using Cisco devise.

best regards,

Sent from my BlackBerry device on the Rogers Wireless Network

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