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Cisco 819 Series Integrated Services Routers Software Configuration Guide
OL-23590-02
Chapter 8 Configuring the Serial Interface
Configuration Examples
Low-Speed Serial Interface: Examples
The section includes the following configuration examples for low-speed serial interfaces:
• Synchronous or Asynchronous Mode: Examples, page 8-20
• Half-Duplex Timers: Example, page 8-20
Synchronous or Asynchronous Mode: Examples
The following example shows how to change a low-speed serial interface from synchronous to
asynchronous mode:
interface serial 2
physical-layer async
The following examples show how to change a low-speed serial interface from asynchronous mode back
to its default synchronous mode:
interface serial 2
physical-layer sync
or
interface serial 2
no physical-layer
The following example shows some typical asynchronous interface configuration commands:
interface serial 2
physical-layer async
ip address 10.0.0.2 255.0.0.0
async default ip address 10.0.0.1
async mode dedicated
async default routing
The following example shows some typical synchronous serial interface configuration commands
available when the interface is in synchronous mode:
interface serial 2
physical-layer sync
ip address 10.0.0.2 255.0.0.0
no keepalive
ignore-dcd
nrzi-encoding
no shutdown
Half-Duplex Timers: Example
The following example shows how to set the cts-delay timer to 1234 ms and the transmit-delay timer to
50
ms:
interface serial 2
half-duplex timer cts-delay 1234
half-duplex timer transmit-delay 50