R2511-HP MSR Router Series Interface Configuration Guide(V5)

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Step Command Remarks
21. Shut down the synchronous
serial interface.
shutdown
Optional.
A synchronous serial interface is
up by default.
22. Start a loop test.
looptest [ -c count | -p { pattern |
special { ascending | descending |
random } } | -s packetsize | -t
timeout ] * interface type number
Optional.
This command is available only on
synchronous serial interfaces
created for E1, T1, E1-F, or T1-F.
Enabling subinterface rate statistics collection on a serial
interface
After enabling subinterface rate statistics collection on a serial interface, the device periodically refreshes
the rate statistics for the subinterfaces of the serial interface. You can use the display interface command
to view the rate statistics.
Serial interfaces that support this feature include synchronous serial interfaces,
synchronous/asynchronous serial interfaces, and sub-channel serial interfaces, but not dedicated
asynchronous serial interfaces.
To enable subinterface rate statistics collection for a serial subinterface:
Step Command Remarks
1. Enter system view.
system-view
N/A
2. Enter serial interface view.
interface interface-type
interface-number
N/A
3. Enable subinterface rate
statistics collection on the
serial interface.
sub-interface rate-statistic
Optional.
Disabled by default.
NOTE:
• Support for this feature varies with device models.
• Use this function with caution, because it is system resource demanding.
Displaying and maintaining serial interfaces
Task Command Remarks
Display information about the
specified serial interfaces.
display interface [ serial ] [ brief [ down |
description ] ] [ | { begin | exclude |
include } regular-expression ]
display interface serial interface-number
[ brief [ description ] ] [ | { begin | exclude
| include } regular-expression ]
Available in any view.
Clear statistics on a specified serial
interface.
reset counters interface [ serial
[ interface-number ] ]
Available in user view.