D-Link DGS-3048 [40/147] Port mirroring

DGS-3048 Gigabit Ethernet Switch Manual

Management Admin User

User Account Management

Add/Update/Delete User Accounts Yes No

View User Accounts Yes No

Table 7-1. Admin and User Privileges

After establishing a User Account with Admin-level privileges, be sure to save the changes at the Save Changes page.

Port Mirroring

Port mirroring monitors and mirrors network traffic by forwarding copies of incoming and outgoing packets from a

monitored port to a monitoring port. Users specify which target port receives copies of all traffic passing through a specified

source port. .

Figure 7- 8. Setup Port Mirroring Window

To configure a mirror port:

1. Select the Source Port from where you want to copy frames and the Target Port, which receives the copies from the

source port.

2. Select Ingress, Egress, or None and change the Status drop-down menu to Enabled.

3. Click Apply to let the changes take effect.

NOTE: You cannot mirror a fast port onto a slower port. For example, if

you try to mirror the traffic from a 100 Mbps port onto a 10 Mbps port, this

can cause throughput problems. The port you are copying frames from

should always support an equal or lower speed than the port to which you

are sending the copies. Also, the target port for the mirroring cannot be a

member of a trunk group. Please note a target port and a source port