[ietf78-tech] Admission Control: Just to be completely clear

Randy Bush randy at psg.com
Mon Jun 28 08:04:11 PDT 2010


> The performance question on the filtering VLAN is still the big one in
> my mind.

now that i think i understand the identity and authentication, i agree.
scaling is a real worry.

> If you toss out the IPV6 requirement for the filtering VLAN

tossing out ipv6 tends not to sell well at the ietf.

> The performance worry on both the 3560's and the Ebtables for me is
> that I believe both of those will devolve to linear search on the
> total number of users on the filtering lan (* some statistical
> average).  This is per-packet, linear search on some 1000 rules.

it is midnight here.  my sense of humor does not extend that far.

> So my own preference would be IPSET's (IP+MAC) as the control
> mechanism.  But this means you also buy off on: no IPV6 on the control
> VLAN, and the DHCP for that VLAN has to be 12 hours at least.

i am not sure what you mean by "control vlan."  if you mean no ipv6 for
authenticated users, then i wanna watch you explain that to bob hinden
and brian carpenter and ...

randy


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