Configuring An Asynchronous Serial Interface - HP MSR Router Series Configuration Manual

Configuring an asynchronous serial interface

This section only describes the interface properties configuration. Depending on the network
requirements, you might also need to configure PPP, DDR, IP address, firewall, and interface backup.
To configure an asynchronous serial interface:
Step
1. Enter system view.
2. Enter asynchronous serial
interface view.
3. (Optional.) Set the interface
description.
4. Configure a synchronous or
asynchronous serial interface
to operate as an
asynchronous serial interface.
5. Set the link layer protocol.
6. Set the operating mode.
7. (Optional.) Enable level
detection.
8. (Optional.) Enable local
loopback.
9. Set the MTU.
10. Set the keepalive transmission
interval.
11. (Optional.) Eliminate the
pulses with a width less than
3.472 μs.
12. Set the MRU for an interface
operating in flow mode.
13. (Optional.) Set the intended
bandwidth for the
asynchronous serial interface.
14. (Optional.) Restore the default
settings for the asynchronous
serial interface.
15. Bring up the asynchronous
serial interface.
Command
system-view
interface async interface-number
or
interface serial interface-number
description text
physical-mode async
link-protocol ppp
async mode { flow | protocol }
detect dsr-dtr
loopback
mtu size
timer-hold seconds
eliminate-pulse
phy-mru mrusize
bandwidth bandwidth-value
default
undo shutdown
15
Remarks
N/A
N/A
By default, the description of an
asynchronous serial interface is
interface name Interface, for
example, Serial2/1/0 Interface.
By default, a synchronous or
asynchronous serial interface
operates as a synchronous serial
interface.
Skip this step if the interface is an
asynchronous interface.
The default is PPP.
The default is the protocol mode.
By default, level detection is
enabled.
By default, local loopback is
disabled.
The default is 1500 bytes.
The default is 10 seconds.
By default, the pulses with a width
less than 1.472 μs are eliminated.
The default MRU is 1700 bytes.
By default, the expected
bandwidth (in kbps) is the interface
baud rate divided by 1000.
N/A
By default, an asynchronous serial
interface is up.