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8-2
MAX Administration Guide
Administering PAD, X.25, and Frame Relay
Administering X.25
X.25/T3POS enables you to send data over the ISDN D channel while continuing to send
traffic over both B channels.
Displaying information about X.25
To display information about X.25 frame and packet layers, enter the Show X25 command.
For example:
ascend% show x25
Frame State BytesIn BytesOut
1 LinkUp 15 45
Packet State BytesIn BytesOut
1 Ready 0 0
The output includes the following fields:
Field
Description
Frame
Frame layer.
Packet
Packet layer.
State
State of the connection at that layer.
For the frame layer, the following states can occur:
•
SABMSent
—The MAX has sent an Set Asynchronous Balanced
Mode (SABM) message to establish the operating mode as Link
Access Balanced Protocol (LABP), and the transmitter is waiting
for a an Unnumbered Acknowledge response (UA).
•
DISCSent
—The MAX sends a DISC message to disconnect the
frame level, and the transmitter is waiting for a UA.
•
FRMRSent
—The MAX sends an FRMR message, indicating that
the MAX received a malformed frame, and the sender is waiting
for a SABM message.
•
LinkUp
—The link is up and sending I frames and S frames.
•
Disconnected
—The MAX requests a disconnect, and the
sender is waiting for a SABM message.
For the packet layer, the following states can occur:
•
Ready
—The packet layer is ready to send and receive data.
•
DTERestart
—The DTE issues a Restart Request.
•
DCERestart
—The DCE issues a Restart Request.
•
BothRestart
—The MAX sends Restart Requests to both the
DTE and the DCE.
•
InitState
—Indicates the initial state of a call.
BytesIn
Number of bytes the MAX receives from the remote node.
BytesOut
Number of bytes the MAX transmits to the remote node.