VLAN
Allows you to set a VLAN Identifier (VID), a Drop Eligible Indicator (DEI), a
Priority Code Point (PCP) and a User Customer Address (UCA).
Displays a Tag Protocol Identifier (TPID).
Dst MAC
The MAC-in-MAC destination address can either be specified manually, or
be decided based on an ARP lookup. To enable ARP, select the ARP check
box to the right of the Dst MAC field.
The ! button is an instant ARP button which when touched will perform an
ARP lookup immediately, instead of waiting until the transmitter starts.
Src MAC
Allows you to specify the MAC-in-MAC source address.
Ethertype
Shows the type automatically depending on layer configuration. If the value
is selectable, select the value by touching the field.
Touching the VLAN layer button displays the parameters available for the
Virtual LAN protocol layer.
Virtual LAN (VLAN) is used to create independent logical networks within a
physical network. When enabled, it adds a 16 bit IEEE 802.1Q field and a 16
bit Ethertype field to the header. The 802.1Q is separated into 3 parts.
VLAN affects the Ping and RFC2544/Router Latency test, i.e. when VLAN is
enabled, only frames with VLAN tag will be accepted. Furthermore, Ping replies
will only be sent if the Ping request contains the same VLAN ID as the one
selected.
Level count
Up to eight levels of VLAN can be inserted in the frame. The number of VLAN
fields is selected through the Level count drop-down menu, and each level
is set up individually.
ID
Touching the ID (VLAN ID) button launches a setup dialog box from which it
is possible to set up a denoting of the virtual LAN.
CFI
Selecting the CFI check box sets a 1-bit flag denoting whether MAC
addresses inside the frame are in canonical format.
Priority
It is possible to set up the priority level of each frame.
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