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Priority 2
Each port can parse the header of an incoming IPv4 header and
identify the Type-Of-Service byte (TOS field). This is extremely
important with the deployment of Microsoft Windows 2000 and the
emerging DiffServ standard, which marks Voice-Over-IP and other
real-time traffic using this field. This feature provides Quality of
Service (QoS).
IF this function of a port is enabled, then the most significant 6 bits of
the TOS (these 6 bits are also known as the DiffServ Code Point
"DSCP" field, value from 0 to 63) are used to assign a priority to the
packet received from this port. Please check the corresponding
mapping checkbox to assign a high priority or uncheck that to assign
a low priority. The old 48310 and 48320 modules do not support this
function.
IGMP (IP Multicast)
IGMP is used in multicast communication network applications
where one or more servers, for example, video servers, generate
multicast traffic. If you want your switch to support multimedia and IP
multicast, enable this option (default is enabled). When this option is
Figure 5-11. Port Priority – Type of Service
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