iES26G Series User’s Manual
iS5 Communications Inc.
42
TOS/DSCP Priority
The following table describes the labels for the TOS/DSCP Priority screen.
Label
Description
TOS/DSCP
TOS (Type of Service) is a field in the IP header of a packet. This TOS
field is used by Differentiated Services and is called the
Differentiated Services Code Point (DSCP). The output priority of a
packet can be determined by this field. The system provides 1-64
TOS priority levels. Each level has 8 priorities (0-7). The default is
0.
Apply
Click “
Apply
” to set the configurations.
Help
Show help file.
4.1.10
Multicast
4.1.10.1
IGMP Snooping
The Internet Group Management Protocol (IGMP) is used by IP hosts to register their
dynamic multicast group membership. IGMP has 3 versions: IGMP v1, v2 and v3. Please
refer to RFC 1112, 2236 and 3376. IGMP Snooping improves the performance of networks
that carry multicast traffic. It provides the ability to trim multicast traffic so that it travels
only to those end destinations that require that traffic. This reduces the amount of traffic
on the Ethernet LAN.
