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 CT1 interfaces
Task Command Remarks
Display the status of a CT1
interface.
display controller t1 [ interface-number ] [ |
{ begin | exclude | include }
regular-expression ]
Available in any view.
Display the status of a channel set.
display interface serial
interface-number:set-number [ | { begin |
exclude | include } regular-expression ]
Available in any view.
Clear the controller counter for a
CE1 interface.
reset counters controller t1 interface-number
Available in user view.
Configuring an E1-F interface
E1-F interfaces, which are fractional E1 interfaces, are simplified CE1 interfaces. They are a cost-effective
alternative to CE1 interfaces where E1 access does not need multiple channel sets.
An E1-F interface operating in framed mode can only bind timeslots into one channel set. A CE1
interface can group and bundle timeslots randomly into multiple channel sets.
An E1-F interface can operate in either framed (the default) or unframed mode.
When an E1-F interface is working in unframed mode, it is a non-timeslot interface with 2048 kbps of
data bandwidth. It is logically equivalent to a synchronous serial interface where you can configure PPP,
HDLC, or FR at the link layer and IP at the network layer.
When an E1-F interface is working in framed mode, it is physically divided into 32 timeslots numbered
0 through 31. Except timeslot 0 used for transmitting synchronization information, all other timeslots can
randomly form one channel set. The rate of the interface is n × 64 kbps and its logical features are the
same as those of a synchronous serial interface where you can configure PPP and FR at the data link layer
and IP at the network layer.