On 9/15/10, Abraham Varricatt <abraham.varricatt+s...@googlemail.com> wrote:
> On Thu, Sep 16, 2010 at 12:00 AM, Lee <ler...@gmail.com> wrote:
>
>> On 9/15/10, Abraham Varricatt
>> <abraham.varricatt+s...@googlemail.com<abraham.varricatt%2bs...@googlemail.com>>
>> wrote:
>>  > I've done some more investigation/study into this and well, could
>> someone
>> > please confirm if I've got my facts right below?
>>
>> I'll try :)
>>
>>
> Thank you VERY much for your response Lee !! You have no idea how much of a
> headache all this has been giving me. Good Lord, I had no idea how much
> complexity existed between the different networking components while
> implementing SNMP !

I haven't really thought about that part for a long time, but yeah..
it is a bit overwhelming at first.

> A confession: The only book in my possession is "SNMP, SNMPv2, SNMPv3, and
> RMON 1 and 2 (3rd Edition) by William Stallings". I have some background in
> C & Linux, but nil / zilch with networking. Can you please suggest any good
> networking books I could get to learn up these concepts?

I'm sure there's books out there but I don't know of any.  Wikipedia
seems fairly good if you know what you're looking for.  Cisco is
pretty good - I'd suggest starting here for the basics
http://www.cisco.com/en/US/docs/internetworking/technology/handbook/ito_doc.html

> To be honest, this part of your explanation is still making my head spin -
> "The mac address of the layer-3 router ip address may or may not have
> anything to do with a layer-2 port mac address."

Remember the context is a layer-3 switch; the physical ports are L2
switch ports & the L3 router "ports" are virtual interfaces.  It seems
reasonable that a router interface, physical or not, has it's own mac
address...

>  At least, from what I
> remember in college, that information *should* be the same up/down the
> stack.

<grin> have a look at balance-alb mode:
http://www.linuxfoundation.org/collaborate/workgroups/networking/bonding#Bonding_Driver_Options

> In hindsight, it looks like I bit off a 'little' more than I could chew, but
> I want to keep going all the same.

It really isn't all that hard :)   & it was *much* easier for me to
understand after looking at the snmpwalk output and figuring out how
it all ties together.

Good luck!

Lee

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