158
other devices.
Buttons
: Refreshes the displayed table starting from the "VLAN" input fields.
: Updates the table starting from the first entry in the VLAN Table, i.e. the entry with the lowest VLAN ID.
: Updates the table, starting with the entry after the last entry currently displayed.
: Click to save changes.
: Click to undo any changes made locally and revert to previously saved values.
4.8.5 Port Group Filtering
In certain switch applications, the administrator may want to control the multicast services that are available to end-user. For
example is about IP/TV service based on a specific subscription plan. The IGMP filtering feature fulfills this requirement by
restricting access to specified multicast services on a switch port, and IGMP throttling limits the number of simultaneous multicast
groups a port can join.
IGMP filtering enables you to assign a profile to a switch port that specifies multicast groups that are permitted or denied on the
port. An IGMP filter profile can contain one or more, or a range of multicast addresses; but only one profile can be assigned to a
port. When enabled, IGMP join reports received on the port are checked against the filter profile. If a requested multicast group is
permitted, the IGMP join report is forwarded as normal. If a requested multicast group is denied, the IGMP join report is dropped.
IGMP throttling sets a maximum number of multicast groups that a port can join at the same time. When the maximum number of
groups is reached on a port, the switch can take one of two actions; either “deny” or “replace”. If the action is set to deny, any new
IGMP join reports will be dropped. If the action is set to replace, the switch randomly removes an existing group and replaces it
with the new multicast group. The IGMP Snooping Port Group Filtering Configuration screen is shown in
Figure 4-8-8
.
Figure 4-8-8
IGMP Snooping Port Group Filtering Configuration Page Screenshot
The page includes the following fields:
Содержание IFS NS3550-24T/4S
Страница 1: ...P N 1072569 REV 00 05 ISS 11OCT12 IFS NS3550 24T 4S User Manual ...
Страница 37: ...User s Manual of NS3550 24T 4S 37 ...
Страница 96: ...96 Figure 4 4 6 Port Mirror Configuration Page Screenshot ...
Страница 127: ...User s Manual of NS3550 24T 4S 127 Figure 4 6 10 Port 1 Port 6 VLAN Configuration ...
Страница 151: ...User s Manual of NS3550 24T 4S 151 Figure 4 8 1 Multicast Service Figure 4 8 2 Multicast Flooding ...
Страница 184: ...184 Figure 4 9 14 Voice VLAN Configuration Page Screenshot ...
Страница 204: ...204 Figure 4 11 4 Network Access Server Configuration Page Screenshot ...
Страница 234: ...234 Figure 4 12 1 Port Limit Control Configuration Overview Page Screenshot ...
Страница 250: ...250 Click to undo any changes made locally and revert to previously saved values ...
Страница 297: ...User s Manual of NS3550 24T 4S 297 ...
Страница 388: ...388 Example Show RADIUS statistics SWITCH security aaa statistics ...
Страница 410: ...410 Parameters vid VLAN ID 1 4095 Default Setting disable ...
Страница 441: ...User s Manual of NS3550 24T 4S 441 Example Enable the mirror mode for port 1 4 SWITCH mirror mode 1 4 enable ...