[Pool] Pool server monitoring 12ms offset

Chuck Swiger cswiger at mac.com
Tue Jun 8 17:44:23 UTC 2010


On Jun 8, 2010, at 10:22 AM, Ryan Malayter wrote:
> Or it could just be "the Internet". Asymmetric routes are the norm
> when crossing ISP boundaries, not the exception. Everyone does "hot
> potato" routing, and dumps packets onto their peer and upstream
> networks at the nearest exit point from their own network.
> 
> For example, when a packet travels from my hosting provider in Dallas,
> it jumps from the hosting provider to Level 3 to XO in the Dallas
> metro area, and then XO transports it to Chicago over their network.
> But a packet travelling from my Chicago office starts on XO, and is
> dumped to Level 3's chicago peering point, and then travels to Dallas
> via Level 3's network.

"hot potato" is a nice term, although RFC-2328 uses a fancier phrase, "Open Shortest Path First".  :-)  Although, in point of fact, OSPF is mostly used internally on large networks (within a single AS), and BGP is used for communication between different internetworks.

Regards,
-- 
-Chuck



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