From: Deep Ratan (deep.ratan@gmail.com)
Date: Fri Sep 30 2005 - 12:04:23 GMT-3
does "show cam" display mac address of A) machines directly connected to the
switch ports of the switch or B) machines on all vlans across all switches
in those vlans?
If B) is true, the output of that command could have 10,000 entries.
On 9/30/05, Adam S. Roth <adam@therothfamily.net> wrote:
>
> Show cam
>
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> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
> Deep
> Ratan
> Sent: Friday, September 30, 2005 10:48 AM
> To: ccielab@groupstudy.com
> Subject: layer-2 interview question
>
>
> Hi Everyone,
> Sorry to ask a networking-101 question but being a WAN guy, I haven't been
> working with switches in the past few years. An interviewer asked me this
> question, "If I give you a MAC address that is causing a broadcast storm,
> how will you locate the culprit in a switched environment that has several
> dozen switches and routers?"
>
> I replied, "You'll need to give me a layer-3 address so I can trace it to
> the right switch/router and then look up the ARP table to see on what port
> the offending machine lives" The interviewer didn't like the answer. In
> retrospect, I should probably have said, "A broadcast storm renders the
> network unusable, so I'll start with looking at my network management
> station to see what LAN segment is giving off a critical alarm"
>
> Anyway, my question to members of groupstudy is this: In an environment
> with
> several dozen switches, if you're given just a MAC address, can you find
> out
> where the machine lives?
>
> thanks, Deep
>
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