Hi Adia,
I have found that CDP allows a bundle of good things. Below are some examples,
A couple of switches on different LAN's the client tells me are configured correctly
on each LAN with the correct SNMP community name cannot be discovered using SNMP and
he cannot Telnet to them. I am the supplier of the routers.
I perform a "sh cdp nei det" and in an instant can tell my client what he has done is
configured the switches on a bench in his office. Put them into the car and delivered
each switch to the wrong building and therefore the switches are configured for a
different LAN.
On an FDDI link a major client can see the services on the ring but cannot get data
from point A to B. A quick glipmse "sh cdp nei det" once again reveals the two
routers in question have an IP address mixup. In this case both the same IP address.
Looking through the ARP table would confirm this but the there were several hundred
entries there.
I wanted to know if I had exactly matched my drawing for a switched network having
some 50 2900XL switches going into a 5500. I also needed to document serial no.s etc.
"sh cdp nei" gave me where the switches were. It was a simple matter antering the
data into the 5500 so this was in a sense self documenting. A cut and paste of the
details gave me the resto of my doco.
When IP, AppleTalk and/or IPX fails CDP might still be there and show config issues.
CDP is very handy.
Teunis,
Hobart, Tasmania
Australia
On Tuesday, December 12, 2000 at 11:25:44 PM, CCIE TB wrote:
> Hi group members,
>
> I'm just wondering...if you can access a router by telneting to it, you can
> get most of the information that you will get through CDP. Then what is the
> benefit of CDP?
>
> Thanks to all
>
> Adia
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