Dell PowerConnect J-EX8208, Software Manual

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Table 78: Packet Capture Field Summary (continued)
Your Action Function Field
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
To display the packet headers in hexadecimal
format, select this check box. Specifies that packet headers, except link-layer headers,
are to be displayed in hexadecimal format. Display Hex
To display the packet headers in ASCII and
hexadecimal formats, select this check box. Specifies that packet headers are to be displayed in
hexadecimal and ASCII format. Display ASCII and
Hex
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. 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. Header Expression
Type the number of bytes you want to capture
for each packet header—for example,
256 .
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. Packet Size
549
Chapter 40: Administering and Monitoring System Functions