Configuring VLAN tagging on layer 2/3 involves the definition of the general routing settings and the behavior upon receipt and transmission of tagged packets.
LANconfig: IP Router / General
WEBconfig: LCOS menu tree / Setup / IP-Router / Routing-Method
- Routing method
- Normal: TOS/DiffServ field is ignored.
- Type-Of-Service: The TOS/DiffServ field is regarded as a TOS field; the bits 'low delay' and 'high reliability' will be evaluated.
- DiffServ: The TOS/DiffServ field is regarded as a DiffServ field. After evaluating the precedence, packets with the code points 'AFxx' are saved and packets with the code points 'EF' receive preferential treatment. All other packets are transmitted as normal.
- DiffServ-Tags from Layer-2
The setting for Layer2-Layer3 tagging regulates the behavior when a
data packet is received:
- Off: VLAN tags are ignored.
- On: Priority bits in the VLAN tag are always copied to the precedence of the DSCP.
- Automatic: Priority bits in the VLAN tag are only copied to the DSCP precedence if this is '000'.
- To copy DiffServ-Tags from Layer2 to Layer3 The setting for Layer3-Layer2 tagging regulates the behavior when a data packet is transmitted. If this option is activated, VLAN tags with priority bits originating from the DSCP precedence will be generated if the recipient has sent at least one tagged packet.