Advantech EKI-7428 Series, Руководство пользователя

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53 EKI-7428 Series User Manual
4.5.8 Multicast
Multicast forwarding allows a single packet to be forwarded to multiple destinations.
The service is based on L2 switch receiving a single packet addressed to a specific
Multicast address. Multicast forwarding creates copies of the packet, and transmits
the packets to the relevant ports.
4.5.8.1 Multicast Filtering
The Multicast Filtering page allows for the definition of action settings when an
unknown multicast request is received. The options include: Drop, Flood, or Router
Port.
To access this page, click L2 Switching > Multicast > Multicast Filtering .
Figure 4.31 L2 Switching > Multicast > Multicast Filtering
The following table describes the items in the previous figure.
The ensuing table for Properties Information settings are informational only:
Unknown Multicast Action.
4.5.8.2 IGMP Snooping
IGMP Snooping is defined as the process of listening to Internet Group Management
Protocol (IGMP) network traffic. IGMP Snooping allows a network switch to listen in
on the IGMP conversation between hosts and routers and maintain a map of which
links need which IP multicast streams. Multicasts can be filtered from the links which
do not need them in turn controlling which ports receive specific multicast traffic.
IGMP Settings
To access this page, click L2 Switching > Multicast > IGMP Snooping > IGMP
Settings .
Figure 4.32 L2 Switching > Multicast > IGMP Snooping > IGMP Settings
The following table describes the items in the previous figure.
Item Description
Unknown Multicast
Action Select the configuration protocol: Drop, Flood, or Router Port, to apply
for any unknown multicast event.
Apply Click Apply to save the values and update the screen.
Item Description
IGMP Snooping
State Select Enable or Disable to designate the IGMP Snooping State.
IGMP Snooping
Version Select designate the IGMP Snooping Version: V2 or V3.