> > Unlike AS2914 which purely interconnects with AS7922, it seems that AS3356 > also has direct interconnections to the various Comcast subsidiary > networks which are hidden from the DFZ through no-export communities.
I'm curious how this works and why it's done this way. I have a friend who has transit from AS7922 (the remote AS in his BGP sessions are all 7922), but CenturyLink's looking glass shows an AS path of "33657 <his ASN>" and includes the no-export community. Why is the AS path rewritten? What is the design here? -Ross
