nanog mailing list archives

Re: IPv6 RA vs DHCPv6 - The chosen one?


From: Owen DeLong <owen () delong com>
Date: Tue, 3 Jan 2012 13:52:07 -0800


I agree with you, that is not typical for many networks. For example in
our network we have enabled some of that features (not all) only in some
subnets. Unfortunately those subnets connects over 70% of our users
(6500). Is also great that many produces are going to take that issues
seriously.

Actually we have quite big concerns with decision if:

1. to buy cheaper access switches (like HP 42xx) that have security
features for IPv4 but will never have support for IPv6. The hardware
does not support IPv6 at all. In that case we will be able to replace
access switches in quite short time -  one year. And in next five years
we will be buy a brand new generation of switches that will have all
those problems solved (I hope).

or

2. to buy much more expensive switches (like HP 54xx) that supports some
basic security features for IPv6 and there is some a probability that
other features will be implemented. So we will be able to use ra-guard
and ACLs immediately. In that case there is still a chance that some
features will not be implemented due to hardware limits. So we will have
to buy new generation of switches again in five years.

Tomas


To me, that question is a no-brainer. Buying a product without IPv6 support today as a cost-saving measure makes about 
as much sense as spending $20 to pay someone to recover $0.50 worth of screws from the factory floor sweepings every 
night. You might create the appearance of savings in the short run, but, the costs in the medium and long terms will 
vastly overwhelm any perceived short-term savings.

Owen



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