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makaze
Premium Member
join:2004-02-23
USA

1 recommendation

makaze to depster

Premium Member

to depster

Re: [Speed] Congested Comcast Peering with Akamai, Google in Mid

said by depster:

said by whfsdude:

said by EG:

User Ring (UR), Area Ring (AR), Core Ring (CR) routing.

The one I've never understood is "SUR." I have yet to see this interface name used outside of Comcast. Happen to know?

Maybe Switched User Ring?

Nah it's a Super UR. In most areas it's a juniper with multiple AR connections for redundancy.
johnnn
join:2007-01-25
Ann Arbor, MI

johnnn

Member

So based on the info in this thread, the changes in throughput (things are much improved), and the routing changes I've observed, it looks like Comcast hooked my neighborhood's CMTS (and likely all of wannarbor) into a Super UR whereas before it routed through two regular 10GigE URs on its way to the AR in Pontiac.