D-Link DES-3250TG Standalone Layer 2 Switch
Figure 7- 8. Setup Port Mirroring window
The target port is where information will be duplicated and sent for capture and network analysis. A network analyzer would be attached to this port to capture packets duplicated from the source port.
It should be noted that a faster port (a 1000 Mbps Gigabit Ethernet port, for example) should not be mirrored to a slower port (one of the 48 100 Mbps Fast Ethernet ports), because many packets will be dropped.
The following fields can be set:
Parameter | Description | ||
| Source Port | Allows multiple ports to be mirrored. These | |
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| ports are the sources of the packets to be | |
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| duplicated and forwarded to the Target port. | |
| None | Selecting this option prevents any packets | |
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| from either being received or transmitted. | |
| Ingress | Selecting this option mirrors only received | |
|
| packets. | |
| Egress | Selecting this option mirrors only transmitted | |
|
| packets. | |
| Both | Selecting this option mirrors both received | |
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| and transmitted packets. | |
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