HP MSR2000/3000/4000 Router Series Interface Configuration Guide

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• A CE3 interface in E3 mode is an interface with 34.368 Mbps data bandwidth, on which, no
timeslots are divided. The system automatically creates a serial interface numbered 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.
• A CE3 interface in CE3 mode 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 operating in unframed (E1) mode, the system automatically creates a serial interface
numbered 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.
When the E1 line is operating in framed (CE1) mode, you can bundle timeslots on it. The system
automatically creates a serial interface numbered serial number/line-number:set-number for it. This
interface operates at N × 64 kbps and is logically equivalent to a synchronous serial interface where you
can make other configurations.
CE3 interfaces support link layer protocols PPP, HDLC, FR, LAPB, and X.25 and network protocol IP.
Configuration procedure (in E3 mode)
To configure a CE3 interface in E3 mode:
Step Command Remarks
1. Enter system view.
system-view N/A
2. Enter CE3 interface view.
controller e3 interface-number N/A
3. (Optional.) Configure the
interface to operate in E3
mode.
using e3
The default operating mode is CE3
mode.
4. (Optional.) Configure the
interface to operate in FE3
mode and set the DSU mode
or the subrate.
fe3 { dsu-mode { 0 | 1 } | subrate
number }
By default, DSU mode 1 (the
Kentrox mode) is adopted, and the
subrate is 34010 kbps.
5. (Optional.) Configure the
interface description.
description text
By default, the description of an
interface is interface-name
Interface.
6. (Optional.) Configure the CE3
interface to perform BERT test.
bert pattern { 2^7 | 2^11 | 2^15
| qrss } time number [ unframed ]
By default, no BERT test is
performed.
7. (Optional.) Set the clock
mode.
clock { master | slave }
The default mode for both the CE3
interface and E1 line is slave,
which is line clock.
8. (Optional.) Set the national
bit.
national-bit { 0 | 1 } The default is 1.
9. (Optional.) Enable loopback.
loopback { local | payload |
remote }
By default, loopback is disabled.
10. (Optional.) Restore the default
settings for the CE3 interface.
default N/A