nanog mailing list archives
Re: Destination Preference Attribute for BGP
From: Mark Tinka <mark@tinka.africa>
Date: Fri, 18 Aug 2023 23:13:37 +0200
On 8/18/23 09:38, Robert Raszuk wrote:
Jakob,With AS-PATH prepend you have no control on the choice of which ASN should do what action on your advertisements.
My comprehension of DPA would have been more directed than the "spray & pray" approach AS_PATH prepending provides.
However, the practice of publishing communities by (some) ASNs along with their remote actions could be treated as an alternative to the DPA attribute. It could result in remote PREPEND action too.If only those communities would not be deleted by some transit networks ....
Even then, communities have best efficacy at the closest interconnect with the network that is using them. Since community values are generally not coordinated Internet-wide, it would take a laborious effort to construct the right set of communities to achieve the desired outcome for an end-to-end source or destination path, assuming those communities were not mangled in flight.
Mark.
Current thread:
- Re: Destination Preference Attribute for BGP, (continued)
- Re: Destination Preference Attribute for BGP Robert Raszuk (Aug 18)
- Re: Destination Preference Attribute for BGP Mark Tinka (Aug 18)
- Re: Destination Preference Attribute for BGP Matthew Petach (Aug 18)
- Re: Destination Preference Attribute for BGP Mark Tinka (Aug 18)
- Re: Destination Preference Attribute for BGP Tom Beecher (Aug 21)
- Re: Destination Preference Attribute for BGP Mark Tinka (Aug 21)
- Message not available
- Re: Destination Preference Attribute for BGP Tom Beecher (Aug 22)
- Re: Destination Preference Attribute for BGP Mark Tinka (Aug 22)
- Re: Destination Preference Attribute for BGP Jon Lewis via NANOG (Aug 19)
- Re: Destination Preference Attribute for BGP Mark Tinka (Aug 18)
- Re: Destination Preference Attribute for BGP Mark Tinka (Aug 18)
- Re: Destination Preference Attribute for BGP Mark Tinka (Aug 18)
- Re: Destination Preference Attribute for BGP michael brooks - ESC (Aug 30)
- Re: Destination Preference Attribute for BGP Mark Tinka (Aug 30)
- Re: Destination Preference Attribute for BGP Robert Raszuk (Aug 31)