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Re: Telco's write best practices for packet switching networks
- From: Joe Abley
- Date: Tue Mar 12 16:15:53 2002
On Tuesday, March 12, 2002, at 03:23 , Ratul Mahajan wrote:
Just because routing protocols use addressing or protocols which are not
globally routable doesn't mean that core routers can't be addressed
directly. IS-IS neighbours use NSAP addressing and OSI transport to
exchange routing information, for example, but traceroute still works.
Perhaps the attacks on core routers aren't bad enough to justify such
a drastic step yet. I get conflicting signals from engineers still
working. Some say they see attacks all the time, others say they've
never seen one on their core routers.
On the downside -- this is yet another instance of conflict between
research and operations. Being able to address the (core) routers
directly is an important capability researchers use for tasks like
topology discovery and path/routing characterization. Of course, if
researchers can talk to the routers, so can the attackers .....