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Could be VLAN like one has L2 VPN in the cable specifications. ÂBut
L2 VPN will limit one to Â1024 max per cable line card on a CMTS â itâs a very
limited for services arch in cable and I donât think deployed very widely. The
point is a cable modem receiver chip is built to send its upstream data only to
the CMTS and likewise receive data from the CMTS â so how can two modems even
talk to each other?ÂÂ The link-local domain on the CMTS is also a well-defined and
tied to a virtual L3 network interface that aggregates several physical cable
network interfaces and all the modems. As of Fall 2007, CableLabs in the U.S.
that certifies CMTS and CM equipment has certified more than one CMTS vendor
for Docsis 3.0 IPv6 with ND Proxy support on the CMTS. I will be in Hiroshima, so if anyone would like to understand
the cable and CMTS link-local model and mcast for ND in cable, Âplease find me â
I am hanging out in 6man, v6ops, INT area and the like. Regards, Hemant From: Dunn, Jeffrey H.
[mailto:jdunn@mitre.org] Colleagues, I may be missing something, but it
appears that, in the cases described, the two hosts downstream of two separate
cable modems are off link to each other. This brings up the question: Do there two
cable modems constitute two virtual interfaces, like two VLANs on the same
physical router interface? If so, this is an architectural, rather than an
implementation, question. Thoughts? Best Regards, (301) 448-6965 (mobile) |