Hi,
I apologize if this subject has already been done to death and/or if I'm
reopening a can of worms. If that is the case, point me in the right
direction and I'll go away, I promise. :-)
I am a student at the university of Roma Tre in Italy and, as my thesis
project, I am working on methods for identifying IPv6-in-IPv4 tunnels on
local and remote nodes. The ideal objective is to produce a tool,
similar to traceroute, which can detect IPv6 in IPv4 tunnels and report
the IPv4 hops the tunnel passes through.
e.g.:
1 fec0:1::1 1 ms
2 fec0:2::1 2 ms
10.0.1.9
10.123.4.1
10.0.2.51
3 fec0:3::1 10 ms
Of the various methods possible, SNMP is potentially the one which
provides the most complete and accurate information, so that is my
primary focus at the moment.
However, I do not know which MIBs to use. There is the standard IPv6 MIB
(RFC 2465), and there is the Fenner et al. IETF draft which aims to
extend RFC 2011 in an IP version independent manner, which has since
expired:
http://www.ietf.org/internet-drafts/draft-ietf-ipngwg-rfc2011-update-00.txt
Which should I use? I could use the standard IPv6 MIB (RFC 2465), or the
draft MIB plus the tunnel MIB. None of these seem to be implemented by
Cisco, and net-snmp, on Linux at least, only supports the tunnel MIB and
a very small (useless) subset of the standard IPv6 MIB.
I could try to extend net-snmp on linux, to support what I need, but
which of the two MIBs should I implement? Which MIBs are going to be
standard and used in the future?
Regards,
Lorenzo Colitti
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