nanog mailing list archives
Re: Is there list of IXPs (containing the information of the AS# of the IXP)
From: Jeroen Massar <jeroen () massar ch>
Date: Mon, 22 Dec 2014 15:52:07 +0100
On 2014-12-22 15:45, Song Li wrote:
在 2014/12/22 22:26, Nick Hilliard 写道:On 22/12/2014 13:50, Jeroen Massar wrote:IXs themselves do not have ASNs, as they are Layer 2 providers.most modern IXPs will have an ASN for their route server, and possibly a separate asn for their mgmt infrastructure. Not sure how useful the mgmt ASN is, although most IXPs will paradoxically include this on their list of members. NickThanks for your help! I studied all the AS-Path in the routing table (from routeviews and RIPE), and found that some ASN of IXPs were included in some AS-Path.
You are likely seeing IP addresses from the peering LAN, which typically have addresses that are under the ASN from an IX. Quite a few IXes state that the peering prefixes should not be announced world-wide.
I think that under normal circumstances they should not appear in the AS-Path, hence i want to filter out them.
"Filtering them out" will have fun results when a valid ICMP is being returned. Something about "Packet Too Big"... What is the reason for thinking you need to filter these? Greets, Jeroen
Current thread:
- Is there list of IXPs (containing the information of the AS# of the IXP) Song Li (Dec 22)
- Re: Is there list of IXPs (containing the information of the AS# of the IXP) Jeroen Massar (Dec 22)
- Re: Is there list of IXPs (containing the information of the AS# of the IXP) Nick Hilliard (Dec 22)
- Re: Is there list of IXPs (containing the information of the AS# of the IXP) Song Li (Dec 22)
- Re: Is there list of IXPs (containing the information of the AS# of the IXP) Jeroen Massar (Dec 22)
- Re: Is there list of IXPs (containing the information of the AS# of the IXP) Niels Bakker (Dec 22)
- Re: Is there list of IXPs (containing the information of the AS# of the IXP) Nick Hilliard (Dec 22)
- Re: Is there list of IXPs (containing the information of the AS# of the IXP) Nick Hilliard (Dec 22)
- Re: Is there list of IXPs (containing the information of the AS# of the IXP) Jeroen Massar (Dec 22)
- Re: Is there list of IXPs (containing the information of the AS# of the IXP) Niels Bakker (Dec 22)