ZyXEL Communications IES-1248-51A, Руководство пользователя

Страница: 180 / 654

Chapter 20 IGMP
IES-1248-51V User’s Guide
180
20.7 IGMP Filter Screen
To open this screen, click Advanced Application > IGMP > Filter.
You can use the IGMP filter profiles to control access to a service that uses a
specific multicast group. Configure an IGMP filter profile that allows access to that
multicast group. Then assign the IGMP filter profile to ADSL ports that are allowed
to use the service.
Apply Click Apply to save your IGMP mode settings.
Clicking Apply saves your changes to the IES-1248-51V’s volatile
memory. The IES-1248-51V loses these changes if it is turned off or
loses power, so use the Config Save link on the navigation panel to
save your changes to the non-volatile memory when you are done
configuring.
Add Static Query
VLAN
Apply
When the IES-1248-51V has IGMP Proxy enabled, it does not
forward query messages from multicast source devices as they are
received. Instead, the IES-1248-51V determines whether and how
often to send a query message to downstream hosts.
Type the number of a VLAN to which you want the IES-1248-51V
sends query messages on behalf of a multicast server then click
Apply to add it. The VLAN ID appears in the Static Query VID
Table.
You must configure the system's VLAN settings before you can set
static query VIDs.
Note: If you use Static Query VLAN, then the IES-1248-51V will
send query messages and monitor for join or leave
messages indefinitely.
Static Query VID
Table This table lists the manually added VLANs to which the system sends
IGMP query messages. These are multicast service subscriber VLANs.
Click Delete to remove the selected entry.
Dynamic Query
VID Table This table lists the IGMP query VLANs that the system has dynamically
learned via IGMP snooping or IGMP proxy. These are VLANs on which
the system sends IGMP query messages. They are multicast service
subscriber VLANs.
Note: If the IES-1248-51V receives no response to its query
messages or the hosts do not send join or leave messages
after a certain time, then the query function will cease until
renewed later by the multicast server.
Table 39 Config (continued)
LABEL DESCRIPTION