[EMAIL PROTECTED] writes:
> I've always wondered how this can work. Isn't SNMP
> encapsulated in IP?
Nearly always in UDP/IP.
(but I've seen SNMP/IPX as well, as well as experimental SNMP/TCP/IP
stuff too.)
> If our modems are manipulable
> via SNMP doesn't that imply that they themselves have
> IP addrs distinct from our own?
Yes -- iff they are manipulated via standard SNMP.
> Can I ping my modem?
Maybe. Does traceroute tell you anything interesting?
> Or have they been jiggered to only respond to SNMP
> traffic that's special in some way, like only appearing
> on the cable side, or only on some special frequency...?
Yes, they might have things setup this way. To be honest, I never
read a lot of the DOCSYS specs, so I'm not entirely familiar with what
the official standard says. And...there's likely a lot of legacy,
proprietary stuff going on on the other side of your cablemodem as
well, so I can't exactly say what is going on in that space. Just
because they're a standard doesn't mean everybody is following it...
I've heard about enough misconfigurations of cablemodems so that
checking this out might be fruitful. Or maybe not. YMMV.
--kevin
--
Kevin D. Clark ([EMAIL PROTECTED]) |
Cetacean Networks, Inc. | Give me a decent UNIX
Portsmouth, N.H. (USA) | and I can move the world
[EMAIL PROTECTED] (PGP Key Available) |
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