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Using Cisco Discovery Protocol - CDP to fetch network details.

SGA
Occasional Contributor

Using Cisco Discovery Protocol - CDP to fetch network details.

How can i use Cisco Discovery Protocol - CDP to fetch network details.
4 REPLIES
Bruce Campbell_3
Valued Contributor

Re: Using Cisco Discovery Protocol - CDP to fetch network details.


CDP is receive only by default on Procurve.
Command to enable is "cdp run" and then
"show cdp nei" will show neighbours. Note
cdp may no longer be supported at all on
some Procurve devices.

LLDP is enabled by default.

show lldp info remote

will show neighbours, in an all LLDP
enabled net. Recent versions of IOS
on Cisco support LLDP, at least on
some models.
Bruce Campbell
Director, Network Services
Information Systems and Technology
MC 1018
(519)888-4567 x38323
University of Waterloo, Waterloo, ON
SGA
Occasional Contributor

Re: Using Cisco Discovery Protocol - CDP to fetch network details.

Thanks for the information, but i am new to this, i am not able to understand the terms which you used. can you explain me in detail.

Thanks in advance.
Javed Padinhakara
Respected Contributor

Re: Using Cisco Discovery Protocol - CDP to fetch network details.

Hello SGA,

CDP / LLDP are protocols by which two adjacent devices exchange information about each other periodically.

The information exchanged would be things like "system capabilities", "chassis type" "chassis ID" and so on.

Have a look @ good write-up which also compares CDP with LLDP
http://www.hp.com/rnd/itmgrnews/standards_fulfilling.htm?jumpid=reg_R1002_USEN


There is a Network Management tool from ProCurve which will fetch the data from CDP/LLDP . Check out the product here:
http://www.procurve.com/products/management/ProCurve_Manager/overview.htm

Hope it helps!
Javed
SGA
Occasional Contributor

Re: Using Cisco Discovery Protocol - CDP to fetch network details.

Thanks for the information.