nanog at daork.net
Sun May 10 05:59:31 CDT 2009
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:
"Regarding strange announcements by AS 3130 of prefixes in
22.214.171.124/16" 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.
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