useful bgp example

Jared Mauch jared at
Wed May 19 18:29:21 UTC 2010

On May 19, 2010, at 2:26 PM, Jeff Harper wrote:

>> -----Original Message-----
>> From: Deric Kwok [mailto:deric.kwok2000 at]
>> Sent: Monday, May 17, 2010 6:15 PM
>> To: nanog at
>> Subject: useful bgp example
>> Hi
>> My company will get 2 upstream provider. We will plan 2 routers and
>> each router to connect one provider to use bgp for redundant.
>> Do you have any useful bgp example and website to set it up?
>> Thank you for your help
> This jpg should help, has config on it as well.
> Jeff
> <bgp1.jpg>

Nice, but you don't show it as-path filtering your transits out.  I frequently see people take something learned from transit A and sending it to transit B, and if it happens to be the backup path in-use for your customer, your transits will accept it and likely pick you as best-path and hairpin through your network.

- Jared

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