Pvid Settings; Cos Settings - Dell PowerConnect 3048 User Manual

PVID Settings

In the PVID Settings screen, you can specify the Port VLAN ID (PVID) for each port on your switch. All untagged packets entering the switch are tagged by
default with the ID specified by the port's PVID.

CoS Settings

Port Priority allows the user to specify which ports have greater precedence in situations where traffic may be buffered in the switch due to congestion. The
ports with a setting of "high" will transmit their packets before those with a "normal" setting. The settings on this page only affect ingress packets that are
not already tagged for priority. To raise the priority of a given port, switch the port's setting from "normal" to "high." The default and normal setting for a port
is "normal."
In the CoS Settings screen, you can specify the priority for each port on your switch.
Layer 3 Priority — DiffServ
DiffServ — You can change the default ToS priority by selecting Normal Priority or High Priority for each class of services. This setting leverages the
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IETF definition of the IPv4 Type of Service (ToS) octet in the IP packet-header by using the Differentiated Services Code.
Point (DSCP) field(6 bits) classifies packets into any of the 64 possible classes.
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