Agilent Technologies N2620A - Manual (Page 195)

System Operations 7
N2620A User’s Guide 177
Enabling C-VLAN allows sending and receiving of Q-tagged
frames. Set the appropriate C-VLAN Identifier and C-VLAN
Priority. These values are dependent on the C-VLAN setting
of the network-under-test. Q-tagging is normally used to
group different host traffic in enterprise networks similar to
a single LAN even if they are geographically separated from
each other.
Enabling P-VLAN allows sending and receiving of AD-tagged
frames (also know as Stacked VLAN). Set the appropriate
P-VLAN Identifier and P-VLAN Priority. These values are
dependent on the P-VLAN setting of the network-under-test.
AD-tagging is normally used in the service provider network
to separate different client traffic. Set a 4-hexadecimal digit
value for the P-VLAN Tag Protocol ID (TPID) when testing on
the service provider network. This value will be used by
FrameScope Pro as the TPID field to be inserted and
stripped when enabling P-VLAN support. This field indicates
that the packet is a P-VLAN packet in a service provider
network. This field is dependent on the P-VLAN settings of a
service provider, so you should set this value appropriately.
It can be set even if the P-VLAN is not enabled to indicate to
the FrameScope Pro that the packet is a P-VLAN packet and
should be interpreted as such by the device.
Press Next when done to access the last Test Port Settings Setup
screen.