3Com Switch 8800 Configuration Guide
Chapter 33 QoS Configuration
33-20
a system index for it when delivering an ACL rule with this command. However, you are
not recommended to assign a system index if not urgently necessary.
See the corresponding Command Manual for details of the commands.
33.3.9 Configuring Port Mirroring
Port mirroring duplicates data on the monitored port to the designated monitoring port,
for purpose of data analysis and supervision. The switch supports multiple-to-one
mirroring, that is, you can duplicate packets from multiple ports to a monitoring port.
You can also specify the monitoring direction:
z
Only inbound packets
z
Only outbound packets
Perform the following configurations in system view.
Table 33-14
Configure port mirroring
Operation
Command
Configure port mirroring
mirroring-group
groupId
{
inbound
|
outbound
}
mirroring
-
port
-
list
&<1-8>
mirrored-to
monitor
-
port
Remove port mirroring setting
undo mirroring-group
groupId
You can implement port mirroring configuration by setting mirroring groups at the port.
Up to 20 mirroring groups can be configured at a port, with each group including one
monitoring port and multiple monitored ports.
Note:
The Switch 8800 supports cross-board mirroring, that is, the monitoring and monitored
ports can be at different boards.
Consider these issues when configuring port mirroring:
z
For intra-board mirroring, only one monitoring port can be configured for the
mirroring groups in the same direction. For example, if one mirroring group, with
port A as its monitoring port, has been configured on a board to monitor those
received packets, you need to choose port A as its monitoring port when
configuring a second mirroring group to monitor those received packets. The
same restriction applies to the mirroring group to monitor those packets sent.
z
For cross-board mirroring, only one monitoring port (which is on another board)
can be configured for the mirroring groups in the same direction. For example, a
mirroring group is configured on board 1, with port B on board 2 as its monitoring
