Serial port configuration task list
171
IPLink Software Configuration Guide
15 • Serial port configuration
IPLink(prt-ser)[0/0]#encapsulation framerelay
IPLink(prt-ser)[0/0]#show port serial
Serial Interface Configuration
------------------------------
Port : serial 0 0 0
State : CLOSED
Hardware Port : V.35
Transmit Edge : normal
Port Type : DTE
CRC Type : CRC-16
Max Frame Length: 2048
Recv Threshold : 1
Encapsulation : framerelay
Configuring the active clock edge
Depending on the system configurations—i.e. when using long cables, with certain modem types or data
rates—synchronization problems may occur on the serial port. In these cases, it may be necessary to configure
the clock edge on which the IPLink transmits data.
This procedure describes how to set the active clock edge of the serial interface
Mode: Port serial
Example:
Configuring the active clock edge
The following example enables to send data on the negative edge on slot 0 and port 0 of an IPLink. Check that
Transmit Clock is set to inverted in the command output of
show port serial
.
IPLink(cfg)#port serial 0 0
IPLink(prt-ser)[0/0]#transmit-data-on-edge negative
IPLink(prt-ser)[0/0]#show port serial
Serial Interface Configuration
------------------------------
Port : serial 0 0 0
State : CLOSED
Hardware Port : X.21
Transmit Edge : inverted
Port Type : DTE
CRC Type : CRC-16
Max Frame Length: 2048
Recv Threshold : 1
Encapsulation : framerelay
Step
Command
Purpose
1
node(prt-ser)[
slot/port
]# transmit-data-
on-edge positive
Configures the serial interface to transmit on the
positive edge of the clock (normal, default).
2
node(prt-ser)[
slot/port
]# transmit-data-
on-edge negative
Configures the serial interface to transmit on the
negative edge of the clock (inverted).