Juniper J-Series Administration Manual page 280

J-series Services Router Administration Guide
Table 134: Enabling Packet Capture
Task
Navigate to the Forwarding options
level in the configuration hierarchy.
Specify in bytes the maximum size
of each packet to capture in each
file—for example, 500 . The range is
between 68 and 1500, and the
default is 68 bytes.
Specify the target filename for the
packet capture file—for example,
pcap-file . For each physical interface,
the interface name is automatically
suffixed to the filename—for
example, .
pcap-file.fe-0.0.1
(See the interface naming
conventions in the J-series Services
Router Basic LAN and WAN Access
Configuration Guide.)
Specify the maximum number of files
to capture—for example, 100
range is between 2 and 10,000, and
the default is 10 files.
Specify the maximum size of each
file in bytes—for example,
1024
range is between 1,024 and
104,857,600, and the default is
512,000 bytes.
Specify if all users have permission
to read the packet capture files.
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Configuring Packet Capture with a Configuration Editor
J-Web Configuration Editor
1. In the J-Web interface, select
Configuration>View and Edit>Edit
Configuration.
2. Next to Forwarding options, click
Configure or Edit.
3. Next to Scripts, click Configure or
Edit.
4. Next to Commits, click Configure or
Edit.
In the configuration editor hierarchy,
select Forwarding options.
1. From the Sampling or packet capture
list, select Packet capture.
2. Next to Packet capture, click
Configure.
3. In the Maximum capture size box,
type 500 .
In the Filename box, type
In the Files box, type
. The
In the Size box, type
. The
1. Next to World readable, select Yes.
2. Click OK.
CLI Configuration Editor
From the
edit forwarding-options
Enter
set packet-capture maximum-capture-size
500
Enter
pcap-file .
set packet-capture file filename pcap-file
. Enter
100
set packet-capture file files 100
Enter
1024 .
set packet-capture file size 1024
Enter
set packet-capture file world-readable
[edit] hierarchy level, enter