User`s guide

DGS-3224TG Gigabit Ethernet Switch User’s Guide
on the Switch, STP will block one entire group – in the same way STP will block a single port that has a
redundant link.
The user-changeable parameters in the switch are as follows:
• Group ID:[1] – This field is for a group ID number for the port trunking group.
• Group Name:[ ] – Enter a name for the port trunking group.
• Member ports – Toggle between M to indicate membership of the port trunking group, or a dash (–)
to indicate non-membership.
• State:<Disabled> – This field can be toggled between Enabled and Disabled. This is used to turn a
port trunking group on or off. This is useful for diagnostics, to quickly isolate a bandwidth
intensive network device or to have an absolute backup aggregation group that is not under
automatic control.
Configure Port Mirroring
The switch allows you to copy frames transmitted and received on a port and redirect the copies to
another port. You can attach a monitoring device to the mirrored port, such as a sniffer or an RMON
probe, to view details about the packets passing through the first port. This is useful for network
monitoring and troubleshooting purposes.
Choose Configure Port Mirroring on the Configuration menu to access the following screen:
Figure 6-28. Setup Port Mirroring screen
To configure a mirror port, enter the port from where you want to copy frames in the Source Port field,
select the desired source direction in the next field, and then enter the port that receives the copies
from the source port in the Target Port field. The target port is where you will connect a
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