Monitoring Interface Status And Traffic - Juniper EX Series User Manual

J-Web Application Package User Guide for EX Series Switches, Release 14.1X53-A1
Table 90: Packet Capture Field Summary (continued)
Field Function
Display Hex Specifies that packet headers, except link-layer headers,
are to be displayed in hexadecimal format.
Display ASCII and Specifies that packet headers are to be displayed in
Hex hexadecimal and ASCII format.
Header Expression Specifies the match condition for the packets to be
captured. The match conditions you specify for Addresses,
Protocols, and Ports are displayed in expression format
in this field.
Packet Size Specifies the number of bytes to be displayed for each
packet. If a packet header exceeds this size, the display is
truncated for the packet header. The default value is 96
bytes.
Don't Resolve Specifies that IP addresses are not to be resolved into
Addresses hostnames in the packet headers displayed.
No Timestamp Suppresses the display of packet header timestamps.
Write Packet Writes the captured packets to a file in PCAP format in
Capture File /var/tmp. The files are named with the prefix jweb-pcap
and the extension .pcap. If you select this option, the
decoded packet headers are not displayed on the packet
capture page.
Related
Documentation

Monitoring Interface Status and Traffic

Purpose
198
Using the J-Web CLI Terminal on page 42
NOTE: This topic applies only to the J-Web Application package.
Use the monitoring functionality to view interface status or to monitor interface bandwidth
utilization and traffic statistics on the EX Series switches.
Your Action
To display the packet headers in hexadecimal
format, select this check box.
To display the packet headers in ASCII and
hexadecimal formats, select this check box.
You can enter match conditions directly in
this field in expression format or modify the
expression composed from the match
conditions you specified for Addresses,
Protocols, and Ports. If you change the match
conditions specified for Addresses, Protocols,
and Ports again, packet capture overwrites
your changes with the new match conditions.
Type the number of bytes you want to capture
for each packet header—for example,
To prevent packet capture from resolving IP
addresses to hostnames, select this check
box.
To stop displaying timestamps in the
captured packet headers, select this check
box.
To decode and display the packet headers on
the J-Web page, clear this check box.
Copyright © 2017, Juniper Networks, Inc.
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