3Com S7902E, Configuration Manual

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Generally, a port can belong to only one mirroring group. On an SD or EB series LPU, however, a port
can be assigned to two mirroring groups as a mirroring port.
Configuration Prerequisites
Before configuring Layer 3 remote port mirroring, make sure that you have created a GRE tunnel that
connects the source and destination devices.
Configuring Local Mirroring Groups
Configure a local mirroring group on the source device and on the destination device separately.
Follow these steps to create a local mirroring group (on the source or destination device):
To do… Use the command… Remarks
Enter system view system-view —
Create a local mirroring group
mirroring-group group-id
local
Required
By default, no mirroring group
exists on a device.
Configuring Mirroring Ports for a Local Mirroring Group
On the source device, configure the ports you want to monitor as the mirroring ports; on the destination
device, configure the physical port corresponding to the tunnel interface as the mirroring port.
You can configure a list of mirroring ports for a mirroring group at a time in system view, or assign only
the current port to it as a mirroring port in interface view. To assign multiple ports to the mirroring group
as mirroring ports in interface view, repeat the step.
Configuring mirroring ports in system view
Follow these steps to configure mirroring ports for a local mirroring group in system view:
To do… Use the command… Remarks
Enter system view system-view —
Configure mirroring ports for a
local mirroring group
mirroring-group group-id
mirroring-port
mirroring-port-list
{ both |
inbound | outbound }
Required
By default, no mirroring port is
configured for a mirroring
group.
Configuring a mirroring port in interface view
Follow these steps to configure a mirroring port for a local mirroring group in interface view:
To do… Use the command… Remarks
Enter system view system-view —