[106973] in North American Network Operators' Group
RE: SLAAC(autoconfig) vs DHCPv6 vs IP Address Lifecycle Management
daemon@ATHENA.MIT.EDU (John Lee)
Mon Aug 18 22:17:39 2008
From: John Lee <john@internetassociatesllc.com>
To: "Howard C. Berkowitz" <hcb@netcases.net>, "nanog@nanog.org"
<nanog@nanog.org>
Date: Mon, 18 Aug 2008 21:17:33 -0500
Errors-To: nanog-bounces@nanog.org
Scott,
There are solutions that support both static, quasi-static, also driving DH=
CPv6 servers and Dynamic DNS updates. There are networks that have deployed=
IPal to automate and consolidate their IPv4 and IPv6 block allocations and=
interface assignments. Router Prefix delegation, SLAAC and DHCPv6 were imp=
lemented to have a more automated method of IPv6 address assignments becaus=
e of the large potential number of IPv6 addresses to be assigned in a next =
generation network.
IPal does address block assignments for Prefix delegation, SLAAC and DHCPv6=
support. It does IPv6 interface assignments of /64 EUI-64, /64 random, /12=
6, /127 and /128 and generate the Dynamic DNS updates for those assignments=
.
E-mail me off list if you want any additional information.
John (ISDN) Lee
________________________________________
From: Howard C. Berkowitz [hcb@netcases.net]
Sent: Monday, August 18, 2008 3:42 PM
To: nanog@nanog.org
Subject: RE: SLAAC(autoconfig) vs DHCPv6
To try to stay operational about this, I have a reality testing question
I've used in IPv4 and, for that matter, bridged networks:
If you want to test a resource, be it the end user or an infrastructure
interface, how do you know how to foo it (foo being some value of ping,
traceroute, look it up in SNMP/NetFlow, etc)?
I submit that if you use dynamic assignment of any sort, you really have to
have DNS dynamic update, so you can use a known name to query the function
that's indexed by address. Otherwise, static addresses become rather
necessary if you want to check a resource.
This was especially a question when L2 was "in" and routing was out: how do
you ping a MAC address?
Howard
-----Original Message-----
From: Scott Weeks [mailto:surfer@mauigateway.com]
Sent: Monday, August 18, 2008 3:34 PM
To: nanog@nanog.org
Subject: SLAAC(autoconfig) vs DHCPv6
---------- trejrco@gmail.com wrote: ------------
From: "TJ" <trejrco@gmail.com>
As a general rule, most clients are following the "If we gave them static
IPv4 addresses we will give them static IPv6 addresses" (infrastructure,
servers, etc). The whole SLAAC(autoconfig) vs DHCPv6 is a separate (albeit
related) conversation ...
----------------------------------------------------
I'm still an IPv6 wussie and would like to learn more before moving forward=
,
so would anyone care to share info on experiences with this decision?
scott
