Cabletron Systems 2H22 ユーザーズマニュアル
IGMP/VLAN Configuration Screen
Local Management Supplement
1-45
PORT FILTERING CONFIGURATION
Used to set the switch to filter out inbound frames to prevent them from
being forwarded by the switch out a particular port. This screen also lists
the VLANs that have frames eligible to be transmitted out that port. Refer
to your SmartSwitch device user’s guide for additional information.
being forwarded by the switch out a particular port. This screen also lists
the VLANs that have frames eligible to be transmitted out that port. Refer
to your SmartSwitch device user’s guide for additional information.
VLAN FORWARDING CONFIGURATION
Used to view which ports are included in the VLAN’s Forwarding List
and whether to include a Tag Header in a frame being transmitted. Refer
to your SmartSwitch device user’s guide for additional information.
and whether to include a Tag Header in a frame being transmitted. Refer
to your SmartSwitch device user’s guide for additional information.
PROTOCOL VLAN CONFIGURATION
Used to assign VLAN IDs to protocol types of received frames and to
access the Protocol Ports Configuration screen to add or delete
transmitting ports associated with a specific VLAN ID and protocol type.
Refer to your SmartSwitch device user’s guide for additional information.
access the Protocol Ports Configuration screen to add or delete
transmitting ports associated with a specific VLAN ID and protocol type.
Refer to your SmartSwitch device user’s guide for additional information.
IGMP/VLAN CONFIGURATION
Used to enable or disable IGMP (Internet Group Management Protocol)
on selected VLANs. For details, refer to
on selected VLANs. For details, refer to
1.19
IGMP/VLAN CONFIGURATION SCREEN
disable IGMP (Internet Group Management Protocol, RFC 2236) on
selected VLANs.
selected VLANs.
IGMP provides a solution for handling multicast streams in layer 2
switching devices. IGMP is for hosts on multi-access networks to inform
locally attached switches of their Multicast group membership
information. This is performed by hosts multicasting IGMP Host
Membership Reports. Multicast switches listen for these messages and
then pass them to the routers. This allows distribution trees to be formed
to deliver multicast datagrams.
switching devices. IGMP is for hosts on multi-access networks to inform
locally attached switches of their Multicast group membership
information. This is performed by hosts multicasting IGMP Host
Membership Reports. Multicast switches listen for these messages and
then pass them to the routers. This allows distribution trees to be formed
to deliver multicast datagrams.
Information from the IGMP packets is used to send the multicast stream
only to the end stations that request it.
only to the end stations that request it.