Dell PowerSwitch S4820T Configuration Guide for the S4820T System 9.14.1.0 - Page 699
Configuring Remote Port Mirroring, The RPM VLAN can be used as GVRP VLAN.
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Figure 104. Remote Port Mirroring Configuring Remote Port Mirroring Remote port mirroring requires a source session (monitored ports on different source switches), a reserved tagged VLAN for transporting mirrored traffic (configured on source, intermediate, and destination switches), and a destination session (destination ports connected to analyzers on destination switches). Configuration Notes When you configure remote port mirroring, the following conditions apply: • You can configure any switch in the network with source ports and destination ports, and allow it to function in an intermediate transport session for a reserved VLAN at the same time for multiple remote-port mirroring sessions. You can enable and disable individual mirroring sessions. • BPDU monitoring is not required to use remote port mirroring. • A remote port mirroring session mirrors monitored traffic by prefixing the reserved VLAN tag to monitored packets so that they are copied to the reserve VLAN. • Mirrored traffic is transported across the network using 802.1Q-in-802.1Q tunneling. The source address, destination address and original VLAN ID of the mirrored packet are preserved with the tagged VLAN header. Untagged source packets are tagged with the reserve VLAN ID. • You cannot configure a private VLAN or a GVRP VLAN as the reserved RPM VLAN. • The RPM VLAN can't be a Private VLAN. • The RPM VLAN can be used as GVRP VLAN. Port Monitoring 699
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