A
BOUT
THE
T
IGER
S
WITCH
1000
1-6
Multicast Switching
Specific multicast traffic can be assigned to its own VLAN to ensure
that it does not interfere with normal network traffic and to
guarantee real-time delivery by setting the required priority level
for the designated VLAN. The switch uses IGMP Snooping and
IGMP to manage multicast group registration.
Traffic Priority
This switch provides Quality of Service (Q oS) by prioritizing each
packet based on the required level of service, using two distinct
categories with Weighted Fair Queuing. It uses IEEE 802.1Q and
802.1p tags to prioritize incomming traffic based on input from the
end-station application driver. These functions can be used, for
example, to provide independent priorities for real-time vide o,
real-time voice, guaranteed-delivery data, or best-effort data.
Optional Redundant Power Unit
SMC provides an optional Redundant Power Unit (RPU),
SMCRPU150W, that can supply power to the switch in the event of
failure of the internal power supply.
Power Supply Receptacles
There are two power receptacles on the rear panel of the switch.
The standard power receptacle is for the AC power cord. The
receptacle labeled “DC Input” is for the optional Redundant Power
Unit (RPU).
Figure 1-3. Power Supply Receptacles