3com S7906E Instrução De Instalação
4-5
Configuring Fast-Leave Processing for a UNI
With the fast-leave processing feature enabled, when the ONU receives an IGMP leave message from
a host announcing its leaving a multicast group, the ONU immediately deletes that port from the
outgoing port list of the forwarding table. After that, when receiving IGMP group-specific queries for that
multicast group, the ONU will not forward them to that port.
a host announcing its leaving a multicast group, the ONU immediately deletes that port from the
outgoing port list of the forwarding table. After that, when receiving IGMP group-specific queries for that
multicast group, the ONU will not forward them to that port.
If only one host is attached to a port on the ONU, fast-leave processing helps improve bandwidth and
resource usage.
resource usage.
Follow these steps to configure fast-leave processing for a UNI:
To do...
Use the command...
Remarks
Enter system view
system-view
—
Enter ONU port view
interface
onu
interface-number
—
Enable fast-leave processing
on a UNI
on a UNI
uni uni-number
igmp-snooping fast-leave
Required
By default, fast-leave
processing is disabled on a
UNI.
By default, fast-leave
processing is disabled on a
UNI.
Before performing this configuration, make sure the ONU works in IGMP Snooping mode. For
related configurations, refer to
related configurations, refer to
.
The fast-leave processing feature is effective for IGMPv2 or IGMPv3 clients only.
If fast leave processing is enabled for a port to which more than one host is attached, when one
host leaves a multicast group, the other hosts attached to the port and listening to the same
multicast group will fail to receive multicast data.
host leaves a multicast group, the other hosts attached to the port and listening to the same
multicast group will fail to receive multicast data.
Configuring Port Isolation for a UNI
This task adds UNIs to an isolation group to achieve Layer-2 data isolation (that is, UNIs in an isolation
group cannot forward packets to each other). This improves network security and allows for flexible
networking schemes.
group cannot forward packets to each other). This improves network security and allows for flexible
networking schemes.
Follow these steps to configure port isolation for a UNI:
To do...
Use the command...
Remarks
Enter system view
system-view
—
Enter ONU port view
interface
onu interface-number
—
Configure port
isolation for all UNIs
isolation for all UNIs
onu port-isolate enable
Configure
UNI port
isolation
UNI port
isolation
Configure port
isolation for the
specified UNI
isolation for the
specified UNI
uni
uni-number port-isolate
Required
Use either command
By default, a UNI port is
not in any isolation
group.
Use either command
By default, a UNI port is
not in any isolation
group.