Agilent Technologies J3972A Guía de usuario descargar pdf (Pagina 358)

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Protocol Analyzer

Using Packet Capture Instances

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To slice packets

1 Create a new instance, if necessary.

2 Select Settings➤Capture Buffer… from the base

window.

3 Choose the Truncate After point.

When Protocol Analyzer captures packets, it stores them in the capture

buffer. You can set the capture buffer to keep all packet data or slice off

and keep only the ﬁrst part of each packet. This technique lets you make

better use of the capture buffer space by not cluttering it up with data

you don’t need.

The Truncate After option pop-up lets you choose how many bytes of

each packet to keep; choose from several slice points, or set this option to

Don’t Truncate to keep all packet data.

To specify which network interface to use

1 Create a new instance, if necessary.

2 Select Settings➤Interface… from the base window.

3 Choose the Interface Name to use from the option pop-

up menu.

Note: No packet capture occurs on Interface 1 (Ethernet) on the FDDI

probes J3321a and J3322a, since these devices do not support RMON. If

you attempt to create a packet capture on this interface of these probes,

you will get these error messages:

Received SNMP error “badvalue” for variable

Value: integer (1)

Agent : <IP address>

Cannot set control fields

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