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TNETX3270
ThunderSWITCH 24/3 ETHERNET SWITCH
WITH 24 10-MBIT/S PORTS AND 3 10-/100-MBIT/S PORTS
SPWS043B – NOVEMBER 1997 – REVISED APRIL 1999
50
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
port mirroring
It is possible to copy (or mirror) all frames that are received by and transmitted to a port designated by the
Mirrorport register to the port designated by the Uplinkport register. This feature is enabled if the mirr bit in
Syscontrol is set to 1, and disabled if it is 0.
If Mirrorport selects a port that is a member of a trunk, only that single specific port is mirrored. Frame traffic
on the other trunk port(s) is not mirrored. The Uplinkport register should not select a port within a trunk
(undesired behavior can occur if this is done).
copy to uplink
If destination address is a unicast and the cuplnk bit of its address record is set to 1 (via a DIO add), when a
frame specifies that address as the destination, a copy of the frame also is sent to the port specified in the
Uplinkport register. The Uplinkport register should not be set to select a port within a trunk (undesired behavior
can occur if this is done).