10 May
2009
10 May
'09
7:13 a.m.
OK，I see, Thanks！ 2009/5/10 Nathan Ward <nanog@daork.net>:
On 10/05/2009, at 10:51 PM, yangyang. wang wrote:
As we know, BGP instance running on routers don't allow loop in ASPATH, why they can be seen in RIBs? It's some particular technical configuration in practice? OR What's wrong with AS3130??
Look at the WHOIS entry for AS3130, and notice in the comments field: http://psg.com/as3130/
"Regarding strange announcements by AS 3130 of prefixes in 98.128.0.0/16" is in the big headings on the top of that page.
He is no doubt announcing it with an origin AS of 3130 so no person or router complains about inconsistent origins.
-- Nathan Ward