Hi Syed,
Syed Ajim Hussain wrote:
Hi
Francis/Jhon
Thanks for your information. Why IPv6 Broadband access service is so
dependent on DHCP6. Even if you run DHCP6-Relay on NAS there is some
problem in NAS for maintaining Route-information, Since NAS does not
know
What prefixes are allocated to internal access networks. Since CPE
Device
Again needs to inform routing information to NAS, CPE device may not
support routing protocols like BGP, OSPF.
There should be a simple prefix delegation mechanism such that NAS can
directly use to advertise prefixes from AAA to its Access clients
without using DHCP6 server. If you don't support DHCP6 then IPv6 AAA
does not have much use in NAS.
The point is that there's no specification of addressing assignment
for the prefix usign AAA because that address assignment is performed
by DHCPv6 if necessary, or by Stateless Address Autoconfiguration
(RFC2462) otherwise.
Routers Advertise basic routing and addressing configuration for
the link using Router Discovery (RFC2461). This contains the
addressing prefixes, and whether addresses should be autonomously
configured by the host or requested from a DHCPv6 service.
This is the same mechanism used to advertise prefixes, and allow
address configuration on Ethernet and other networks too.
So there's no added reliance on DHCPv6, just the normal one.
Greg
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