OK,I see, Thanks!
2009/5/10 Nathan Ward <na...@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 > > >