Posted by: Ali.com | 30 November 2007

Not-So-Dumb OSPF

A new IETF RFC published!
OSPFv3.5: Routing excess traffic around bottlenecks dynamically :p

Okay, I’m not sure if MPLS-TE can do that (perhaps with the help of router QoS smart tools like the ones in Cisco IOS and JunOS), but I think this idea would be nice for the medium-to-enterprise-level network. The router has all the means to know if there’s a congestion and can use an alternative, higher cost route for the overflowing traffic–a more-aware version of unequal-cost multipath routing.

(It’s like OSPF knocked up EIGRP and got EOSPF!)

I can even see a new revenue stream in here for service providers. Maybe. Offering a shared overflow link? A backup bandwidth pool, charged per usage/traffic?

What do you think? Now, if somebody tells me this is an old idea, say, from the ATM LANE world, I’ll invoke Goodwin’s Law!


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