Re: [v6ops] new draft: draft-elkins-v6ops-multicast-virtual-nodes

[Mikael Abrahamsson <[e-mail]>]

On Sat, 20 Sep 2014, Nalini Elkins wrote:

> So then, are you saying that the hosting company example we gave was for a 
> particularly ignorant or incompetent firm?   That most hosting providers of IPv6

No, I think the general thinking is that they're of average ignorance and 
competency, which doesn't say much.

The general advice both for IPv4 and IPv6 is not to put a huge amount of 
nodes in the same L2 domain. This has been true for 30 years, that's why 
IP replaced the L2 bridged protocols or lots-of-years-ago.

If you're putting 284 nodes in the same broadcast domain, you're asking 
for trouble. My advice is to separate customers into separate L2 domains, 
or make sure your L2 infrastructure has some L3 functionality, for 
instance private-vlan or other filtering.

So while your draft describes a problem that might be there, asking for 
nodes to not respond to link-local FF0x::1 ICMP ECHO REQUEST isn't the 
correct solution.

Btw, how does the data center you've done testing on implement BCP38 so 
that the customers can't originate packets for addresses they do not 
"own"?

-- 
Mikael Abrahamsson    email: [e-mail]