Juniper EX Series User Manual

Table 90: Packet Capture Field Summary
Your ActionFunctionField
From the list, select an interface—for
example, ge-0/0/0.
Specifies the interface on which the packets are captured.
If you select default, packets on the Ethernet management
port 0, are captured.
Interface
From the list, select Detail.Specifies the extent of details to be displayed for the
packet headers.
• Brief—Displays the minimum packet header information.
This is the default.
• Detail—Displays packet header information in moderate
detail.
• Extensive—Displays the maximum packet header
information.
Detail level
From the list, select the number of packets
to be captured—for example, 10.
Specifies the number of packets to be captured. Values
range from 1 to 1000. Default is 10. Packet capture stops
capturing packets after this number is reached.
Packets
Select address-matching criteria. For
example:
1. From the Direction list, select source.
2. From the Type list, select host.
3. In the Address box, type 10.1.40.48.
4. Click Add.
Specifies the addresses to be matched for capturing the
packets using a combination of the following parameters:
• Direction—Matches the packet headers for IP address,
hostname, or network address of the source, destination
or both.
• Type—Specifies if packet headers are matched for host
address or network address.
You can add multiple entries to refine the match criteria
for addresses.
Addresses
From the list, select a protocol—for example,
tcp.
Matches the protocol for which packets are captured. You
can choose to capture TCP, UDP, or ICMP packets or a
combination of TCP, UDP, and ICMP packets.
Protocols
Select a direction and a port. For example:
• From the Type list, select src.
• In the Port box, type 23.
Matches packet headers containing the specified source
or destination TCP or UDP port number or port name.
Ports
Advanced Options
To display absolute TCP sequence numbers
in the packet headers, select this check box.
Specifies that absolute TCP sequence numbers are to be
displayed for the packet headers.
Absolute TCP
Sequence
To include link-layer packet headers while
capturing packets, select this check box.
Specifies that link-layer packet headers are to be
displayed.
Layer 2 Headers
To read all packets that reach the interface,
select this check box.
Specifies not to place the interface in promiscuous mode,
so that the interface reads only packets addressed to it.
In promiscuous mode, the interface reads every packet
that reaches it.
Non-Promiscuous
197Copyright © 2017, Juniper Networks, Inc.
Chapter 16: Monitoring Tasks

Juniper EX Series Specifications

General

Brand	Juniper
Model	EX Series
Category	Switch
Language	English