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DGS-3120 Series Layer 3 Managed Gigabit Ethernet Switch CLI Reference Guide
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Chapter 60
Mirror Command List
config mirror port <port> {[add | delete] source ports <portlist> [rx | tx | both]}
show mirror {group_id <value 1-4>}
create mirror group_id <value 1-4>
config mirror group_id <value 1-4> {target_port <port> | [add | delete] source ports <portlist> [rx |
tx | both] | state [enable | disable]}(1)
delete mirror group_id <value 1-4>
60-1 config mirror
Description
This command is 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
probe then can be attached to study the traffic crossing the source port in a completely unobtrusive
manner. When mirroring port traffic, please note that the target port operates at the same speed as
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.
Format
config mir
ror port <port> {[add |
delete] source ports <
portlist> [rx | tx |
both]}
Parameters
port - The port that will receive the packets duplicated at the mirror port.
<port> - Enter the port number to be configured here.
add - (Optional) The mirror entry to be added.
delete - (Optional) The mirror entry to be deleted.
source ports - (Optional) The port that will be mirrored. All packets entering and leaving the
source port can be duplicated in the mirror port.
<portlist> - Enter the list of port to be configured here.
rx - (Optional) Allows the mirroring packets received (flowing into) the port or ports in the port list.
tx - (Optional) Allows the mirroring packets sent (flowing out of) the port or ports in the port list.
both - (Optional) Mirrors all the packets received or sent by the port or ports in the port list.
Restrictions
Only Administrator and Operator-level users can issue this command.
Example
To add the mirroring ports:
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