R3303-HP HSR6800 Routers Interface Configuration Guide

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If the packet error rate for the detection period exceeds the PER threshold, the interface automatically
shuts down to avoid the risk of error packets diffusion. At the same time, the renew timer starts. When the
timer expires, the interface automatically comes up.
To configure error packets diffusion restraint:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Enable error packets diffusion
restraint.
error-diffusion restraint enable N/A
3. Configure error packets
diffusion restraint parameters.
error-diffusion restraint config
detect-timer renew-timer threshold
Optional.
By default, the detect-timer is 30
seconds, the renew-timer is 600
seconds, and the PER threshold is
20%.
Displaying and maintaining T1-F interfaces
Task Command Remarks
Display information about a
specified or all T1-F interfaces.
display ft1 [ serial interface-number ] [ |
{ begin | exclude | include }
regular-expression ]
Available in any view.
Display the status of a specified
T1-F interface.
display interface serial serial-number [ |
{ begin | exclude | include }
regular-expression ]
Available in any view.
Configuring a CE3 interface
E3 belongs to the digital carrier system of ITU-T. It transmits data at 34.368 Mbps and adopts HDB3 as
the line code format.
A CE3 interface operates in either E3 or CE3 (the default) mode.
• In E3 mode, a CE3 interface provides 34.368 Mbps of data bandwidth and cannot be divided into
timeslots. The system automatically creates a serial interface named serial
number/line-number/0:0 for it. This interface operates at 34.368 Mbps and is logically equivalent
to a synchronous serial interface where you can make other configurations.
• In CE3 mode, a CE3 interface can demultiplex 16 channels of E1 signals in compliance with ITU-T
G.751 and G.742. Each E1 line can be divided into 32 timeslots numbered 0 to 31, of which
timeslots 1 through 31 can be randomly bundled into N × 64 kbps logical channels. (Timeslot 0 for
framing signal transmission must not participate in bundling operation.) Therefore, CE3 can be
channelized into E1 lines or CE1 lines.
When an E1 line is working in unframed (E1) mode, the system automatically creates a serial interface
named serial number/line-number:0 for it. This interface operates at 2048 kbps and is logically
equivalent to a synchronous serial interface where you can make other configurations.