Edge-Core ES3510MA, Руководство по управлению

Страница: 467 / 984

C
HAPTER
18
| Multicast Filtering
Multicast VLAN Registration
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One or more interfaces may be configured as MVR source ports. A
source port is able to both receive and send data for configured MVR
groups or for groups which have been statically assigned (see
"Assigning Static Multicast Groups to Interfaces" on page 468 ).
All source ports must belong to the MVR VLAN.
Subscribers should not be directly connected to source ports.
◆
Immediate leave applies only to receiver ports. When enabled, the
receiver port is immediately removed from the multicast group
identified in the leave message. When immediate leave is disabled, the
switch follows the standard rules by sending a query message to the
receiver port and waiting for a response to determine if there are any
remaining subscribers for that multicast group before removing the
port from the group list.
■
Using immediate leave can speed up leave latency, but should only
be enabled on a port attached to one multicast subscriber to avoid
disrupting services to other group members attached to the same
interface.
■
Immediate leave does not apply to multicast groups which have
been statically assigned to a port.
P
ARAMETERS
These parameters are displayed:
◆
Port – Port identifier.
◆
Type – The following interface types are supported:
■
Source – An uplink port that can send and receive multicast data
for the groups assigned to the MVR VLAN. Note that the source port
must be manually configured as a member of the MVR VLAN (see
"Adding Static Members to VLANs" on page 160 ).
■
Receiver – A subscriber port that can receive multicast data sent
through the MVR VLAN. Any port configured as an receiver port will
be dynamically added to the MVR VLAN when it forwards an IGMP
report or join message from an attached host requesting any of the
designated multicast services supported by the MVR VLAN. Just
remember that only IGMP version 2 or 3 hosts can issue multicast
join or leave messages. If MVR must be configured for an IGMP
version 1 host, the multicast groups must be statically assigned
(see "Assigning Static Multicast Groups to Interfaces" on page 468 ).
■
Non-MVR – An interface that does not participate in the MVR VLAN.
(This is the default type.)
◆
Oper. Status – Shows the link status.
◆
MVR Status – Shows the MVR status. MVR status for source ports is
“Active” if MVR is globally enabled on the switch. MVR status for
receiver ports is “Active” only if there are subscribers receiving