[AusNOG] Whats peoples BCP for Unused IP Space on Routers ?

Dobbins, Roland rdobbins at arbor.net
Thu Dec 6 19:56:57 EST 2012


On Dec 3, 2012, at 6:55 AM, Shaun Deans wrote:

> - ACLs (Bad IMHO as it requires CPU cycles)

Not on hardware-based boxes, which you ought to be using.

> - Tying to a Loopback (Bad: Leaves ip's open on router which require acls/cpu)

Not on hardware-based boxes, which you ought to be using.

> - Null routing ( would be my pick)

Suggest null-routing them either on your hardware-based edge routers, or in an instrumented sinkhole.

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Roland Dobbins <rdobbins at arbor.net> // <http://www.arbornetworks.com>

	  Luck is the residue of opportunity and design.

		       -- John Milton




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