3-54 Sun Fire B1600 Blade System Chassis Switch Administration Guide •June 2003
3.3.2 Multicast Configuration
Multicasting is used to support real-time applications such as videoconferencing or
streaming audio. A multicast server does not have to establish a separate connection
with each client. It merely broadcasts its service to the network and any hosts that
want to receive the multicast service register with their local multicast switch/
router. Although this approach reducesthe network overhead required by a
multicast server, the broadcast trafficmust be carefully pruned at every multicast
switch/router it passes through to ensure that traffic is only passed on to the hosts
that subscribed to the service.
The blade system chassis switch uses the Internet Group Management Protocol
(IGMP) to query for any attached hosts that want to receive a specific multicast
service. It identifies the ports containing hosts requesting to join the service and
sends data out to those ports only.It then propagates the service request up to any
neighboring multicast switch/router to ensure that it will continue to receive the
multicast service. This procedure is called multicast filtering.
VLAN
Forbidden Ports
MIB-II.
dot1dBridge.
qBridgeMIB.
qBridgeMIBObjects.
dot1qVlan.
dot1qPortVlanTable.
dot1qPortVlanEntry.
dot1qVlanForbidden-
EgressPorts
Read/create Octet string
(port list)
Port TrunkIndex
(Channel
Groups)
sun...
portMgt.
portTable
portEntry.
portTrunkIndex
Read only Integer
VLAN Static
Row Status
MIB-II.
dot1dBridge.
qBridgeMIB.
qBridgeMIBObjects.
dot1qVlan.
dot1qVlanStaticTable.
dot1qVlanStaticEntry.
dot1qVlanStatic-
RowStatus
Read/create enable(1),
disable(2)
TABLE3-14 MIB Variables Associated With Adding Ports to a VLAN (Continued)
Field Name MIB Variable Access Value Range Default Value