WSX Self-Configuration and Virtual Circuits
Page 29-7
WSX Self-Configuration and Virtual Circuits
The following diagram summarizes the self-configuration features of the WSX. This example
assumes no configuration parameters are entered for the WSX. Default bridging is set up on
Group 1, and no Routing or Trunking are configured.
WSX Initial Port and Virtual Circuit Configuration
After mapping virtual circuits to virtual ports, the
WSX is ready to send data. STATUS ENQUI-
RIES
are repeated periodically by the WSX. The intervals between STATUS ENQUIRES can be
configured through software. See Setting Configuration Parameters on page 29-22 for infor-
mation on setting these parameters.
➊
➋
➌
➍
WSX
Cable plugs into WSX serial port.
Board senses cable type
and adjusts circuitry.
The WSX sends STATUS ENQUIRY
message to Frame Relay network.
This message requests the DLCIs of
all virtual circuits and the active/
inactive status of the those VCs.
The Frame Relay network returns a
STATUS message that includes DLCIs
for all VCs on this physical port and
whether the VCs are active, inac-
tive, or deleted.
WSX maps each DLCI (virtual circuit)
to a virtual port within the switch. In
addition, all of these virtual ports are
assigned to default VLAN 1.
➎
Frame Relay
WSX
Network
WSX
Frame Relay
Network
WSX
STATUS ENQUIRY
STATUS
Virtual Port
8
9
10
Virtual Circuit
16
17
18
