--- John Nemeth <[EMAIL PROTECTED]> wrote:
> On May 31, 9:58pm, anthony kim wrote:
> } --- John Nemeth <[EMAIL PROTECTED]> wrote:
> } > }
> } > } Is a real router a device which routes layer 3 packets? Or a
> } > device
> } > } "specifically designed" to route layer 3 packets. Your
> statement
> } > } implies the latter. Whereas I believe the former.
> } >
> } > The latter. A PC make be able to route packets, but that
> } > doesn't
> } > make it a real router. The hardware device is going to be
> faster
> } > (especially at the high end), more reliable, require much less
> } > maintenance (which makes it cheaper in the long run), and
> easier to
> } > install and setup (not to mention take up far less space).
> }
> } John, you've just added qualifications to the definition of a
> real
> } router. Am I correct then in saying you believe a real router is
> }
> } a) a device that routes layer 3 packets
> } b) a device strictly designed to route layer 3 packets
> } c) a device that routes layer 3 fast and reliably
> } d) all of the above
> }
> } The cisco exam answer is: d)
> } I'm just too damn liberal with my definitions so would have
> chosen a)
>
> I would say d). Here's an analogy for you. You can
> insert/remove
> Philips (and, some other) screws by using a small slotted
> screwdriver.
> Does that make the slotted screwdriver a Philips screwdriver?
>
> }-- End of excerpt from anthony kim
Point taken if hardware were all we're talking about.
May I proffer a analogy?
Cisco markets themselves as a seller of IOS (I've read this but can't
find a reference, sorry). They sell software, routing software, and
are adept at what they do. Their "router" is the entire package and
you get a good deal. You get IOS in flash plus nvram plus working
memory set plus the requisite hardware which equal a router.
Basically, you get a layer 3 switching "appliance".
Consider firewalls. Is a firewall "appliance" a real firewall whereas
Checkpoint on HP-UX not a "real" one?
Or a DNS Internet Appliance. Is BIND or djbdns on my OpenBSD box not
a DNS server? Should I opt for the DNS appliance (say, 3DNS) because
it was designed from the bottom up to perform one single function?
Is a Web Cache Internet Appliance real? Whereas a squid cache merely
posing?
I hope I don't come across as playing a semantics game. That is not
my intention.
anthony
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