PLANET WGS3-24240 - Manual (Page 170)

User’s Manual of WGS3-24000 / WGS3-24240
170
4.3.9 Class of Service
Class of Service (CoS) settings allow customization of packet priority in order to facilitate delivery of data traffic that might be
affected by latency problems. When 802.1p Tag Priority is applied, the Switch recognizes 802.1Q VLAN tag packets and
extracts the VLAN tagged packets with User Priority value.
802.1Q Tag and 802.1p priority
User Priority CFI VLAN ID (VID)
3 bits 1 bits 12 bits
TPID (Tag Protocol Identifier) TCI (Tag Control Information)
2 bytes 2 bytes
Preamble
Destination
Address
Source
Address
VLAN TAG
Ethernet
Type
Data FCS
6 bytes 6 bytes 4 bytes 2 bytes 46-1517 bytes 4 bytes
4.3.9.1 802.1p Priority Mapping
This page is to configure the IEEE 802.1p priority mapping on the port.
Figure 4-3-40 802.1p Priority Mapping