Nortel Networks 4050 User Manual

138 Chapter 4 Configuring the domain

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tcpdump

Creates a dump of the TCP traffic flowing between 
clients and the virtual SSL server. You are prompted to 
enter the following information:

•

tcpdump flags

 and 

tcpdump filter

 — for 

more information about the flags and filter 
expressions available for TCPDUMP using UNIX, 
see 

.

•

output mode

 

Options for the output mode are:

•

interactive

 — captured information displays 

on the screen

•

tftp|ftp|sftp

 — the dump will be saved as a 

file to the file exchange server you specify, using a 
destination file name you specify. You are prompted 
to enter the required information. You can specify 
the file exchange server using either the host name 
or the IP address. 

For TFTP, the number of files sent depends on the 
amount of captured information. A sequence 
number is appended to the file name given in the 
CLI, starting at 1 and incremented automatically for 
additional files.

For 

ftp

 and 

sftp

, you will also be prompted to 

specify a user name and password valid on the file 
exchange server.

You can read a saved TCP traffic dump file using the 
TCPDUMP or Ethereal application on a remote 
machine.

The default output mode is 

interactive

.

ping <host>

Verifies station-to-station connectivity across the 
network.

•

host

 is the host name or IP address of the target 

station

If a backend interface is mapped to the current Nortel 
SNAS 4050 domain, the check is made through the 
backend interface. To map a backend interface to the 
domain, use the 

 command 

(see 

To be able to use a host name, the DNS parameters 
must be configured (see 

).

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