On 2/3/12 9:32 AM, Tom wrote:
Hello Everyone,
Kindly clarify does ND-18 support multiple prefix (and multiple
address/node derived from these prefixes).
Yes it does.
I raise this doubt because the assumption section, bullet 4 says -> a
6lowpan is configured with one or more prefixes,
and the final bullet says -> since the 6lowpan shares one single prefix
through out the network.
That inconsistency was pointed out in the IESG review. The final bullet
is supposed to point out that the prefix or prefixes are shared across
all the links in the 6lowpan network.
Further, if 6LBR is advertising multiple prefix and host configures
multiple global addresses based on these prefix how will they be useful.
They will be useful the same way multiple IPv6 prefixes are useful in
general. For example, a site could have a ULA prefix plus a global
prefix. Or a site might have multiple prefixes due to multihoming either
permanently or while moving from one ISP to another. There are issues
with multi-prefix multihoming for IPv4 and IPv6, but none of those are
specific to 6lowpan networks.
Will not the 6LR/6LBR reject registration through ARO from different
source address but same EUI-64 (same node auto configuring with
different prefixes).
Shouldn't be. There is nothing in the document that says that the same
EUI-64 can't be used to register multiple addresses. I don't know if it
makes sense to state this explicitly in the document.
Regards,
Erik
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