JDSU NT850 Betriebsanweisung PDF herunterladen (Seite 51)

Chapter 3 Performing Network Tests

Performing Cisco Discovery Protocol Tests

LanScaperPRO Network Tester User’s Guide 35

6 Press the QUIT key to stop the test.

Performing Cisco Discovery Protocol Tests

This test detects Cisco Delivery Protocol (CDP)

messages broadcast by Cisco bridges and routers over

the network to inform each other of their existence. Using

CDP, network devices periodically advertise their own

information to a multicast address on the network, making

it available to any device or application that wishes to

listen and collect it. A direct connection to the port of

interest is required, because the CDP packets are not IP

addressed and are not forwarded through other switches.

They are intended to identify the specific port which they

are transmitted from and are not designed to be propa-

gated through a network.

To perform a Cisco Discovery Protocol test

1 Connect the LanScaperPRO to a jack or plug at the

workstation location for which the Cisco Discovery

Protocol (CDP) is to be displayed.

2 Access the Network Test Menu. (See “Accessing the

Network Test Menu” on page 22.)

3 Scroll through the menu options using the arrow keys

until Cisco Discovery is highlighted.

NOTE

Some modes of Full Duplex non-auto negotiation

Ethernet connection will not link properly with the Lan-

ScaperPRO, and the Hub Flash function will not work.

LanScaperPRO_User_Guide.book Page 35 Friday, January 25, 2008 1:14 PM

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JDSU NT850 Betriebsanweisung Seite 51