nanog mailing list archives

Re: IPv6 RA vs DHCPv6 - The chosen one?


From: Owen DeLong <owen () delong com>
Date: Tue, 3 Jan 2012 13:56:57 -0800


On Dec 23, 2011, at 1:23 PM, Jeff Wheeler wrote:

On Fri, Dec 23, 2011 at 4:13 PM, Mohacsi Janos <mohacsi () niif hu> wrote:
If you can limit number of ARP/NDP entries per interfaces and you complement
RAGuard and DHCPv4 snooping your are done.

That depends on how ARP/ND gleaning works on the box.  In short, Cisco
already has a knob to limit the number of ND entries per interface on
some of their kit, and it is not a solution, only a damage mitigation
measure.  http://inconcepts.biz/~jsw/IPv6_NDP_Exhaustion.pdf

In the real world, sufficient damage prevention/mitigation qualifies as a solution.

Owen



Current thread: