xStack DGS-3400 Series Layer 2 Gigabit Managed Switch CLI Manual
14
P
ORT
M
IRRORING
C
OMMANDS
The port mirroring commands in the Command Line Interface (CLI) are listed (along with the appropriate parameters) in the
following table.
Command Parameters
config mirror port
<port> [add | delete] source ports <portlist> [rx | tx | both]
enable mirror
disable mirror
show mirror
Each command is listed, in detail, in the following sections.
config mirror port
Purpose
Used to configure a mirror port
−
source port pair on the Switch.
Traffic from any source port to a target port can be mirrored for real-
time analysis. A logic analyzer or an RMON proble can then be
attached to study the traffic crossing the source port in a completely
obtrusive manner.
Syntax
config mirror port <port> [add | delete] source ports <portlist> [rx
| tx | both]
Description
This command allows a range of ports to have all of their traffic also
sent to a designated port, where a network sniffer or other device can
monitor the network traffic. In addition, you can specify that only traffic
received by or sent by one or both is mirrored to the Target port.
Parameters
<port>
−
This specifies the Target port (the port where mirrored
packets will be received). The target port must be configured in the
same VLAN and must be operationg at the same speed a s the
source port. If the target port is operating at a lower speed, the source
port will be forced to drop its operating speed to match that of the
target port.
[add | delete]
– Specifies if the user wishes to add or delete ports to
be mirrored that are specified in the
source ports
parameter.
source ports
– The port or ports being mirrored. This cannot include
the Target port.
<portlist>
−
This specifies a port or range of ports that will be mirrored.
That is, the range of ports in which all traffic will be copied and sent to
the Target port.
rx
−
Allows the mirroring of only packets received by (flowing into) the
port or ports in the port list.
tx
−
Allows the mirroring of only packets sent to (flowing out of) the
port or ports in the port list.
both
−
Mirrors all the packets received or sent by the port or ports in
the port list.
Restrictions
The Target port cannot be listed as a source port. Only administrator-
level users can issue this command.
Example usage:
To add the mirroring ports:
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