Avaya Troubleshooting Routers Anleitung zur Fehlerbehebung PDF herunterladen (Seite 190)

Troubleshooting Routers

B-2

You can use Packet Capture to do the following:

• Copy all incoming packets, outgoing packets, or both.

• Filter and copy incoming packets, outgoing packets, or both.

• Filter incoming packets, outgoing packets, or both, and copy only selected

contents of those packets.

You can terminate Packet Capture as follows:

• Enter a command to terminate it immediately.

• Conﬁgure it to terminate itself when the Packet Capture ﬁle ﬁlls.

• Conﬁgure it to terminate itself when it matches a portion of an incoming or

outgoing packet to a hexadecimal number or character string that you specify.

After Packet Capture terminates, you can choose one of the following options to

examine the ﬁle. To take advantage of the maximum number of features for

viewing a ﬁle, select the ﬁrst option in the list that identiﬁes the tools that you

have available.

• If a Network General Sniffer is available, use the Optivity Internetwork 6.1

Tap software, FTP, TFTP, or XMODEM to transfer a copy of the Packet

Capture ﬁle from the router to a UNIX workstation or DOS PC. You can then

use one of the following methods to convert the ﬁle for processing by a

Network General Sniffer:

— Use Tap to convert the ﬁle on a UNIX workstation.

— Use the Packet Convert utility to convert the ﬁle on a Sun workstation or

DOS PC.

Save the converted ﬁle on a DOS-formatted diskette and insert the diskette in

a Network General Sniffer for analysis.

Using a Network General Sniffer to view a Packet Capture ﬁle allows you to

view each packet in a readable format. If one is available, we recommend that

you use it to read Packet Capture ﬁles. Refer to Using Optivity Internetwork

6.1 for the Tap instructions, or to this appendix for the Packet Convert

instructions, and refer to the Network General Sniffer manual to read the ﬁle.

• If Optivity Internetwork 6.1 or later is available, and you can use it to

establish a remote connection to the router, use the Optivity Tap application to

transfer a copy of the Packet Capture ﬁle from the router, and display the

packets in hexadecimal, summary, or decoded formats.

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Avaya Troubleshooting Routers Anleitung zur Fehlerbehebung Seite 190