User Guide for FibeAir® IP-20 All-Outdoor Products, CeraOS 10.5
Page 494 of 825
Ceragon Proprietary and Confidential
14.7
Configuring 1+1 HSB with Space Diversity (CLI)
Note
:
This feature is only relevant for IP-20C. It can be used with all IP-20C
hardware versions.
A 1+1 HSB-SD configuration utilizes two IP-20C units on each side of the link, with
both radio carriers activated. The IP-20C units are combined and connected to the
primary and diversity antennas via a dual coupler and two flexible waveguides.
Radio carrier 2 is muted on each unit. On the receiving side, the signals are
combined in the active unit to produce a single, optimized signal. The link is
protected via external protection, so that if a protection switchover occurs, the
standby unit becomes the active unit, and the link continues to function with full
space diversity.
To configure a 1+1 HSB link with Space Diversity:
1 For one IP-20 unit, enter the following command in root view to create a
Space Diversity group:
root> radio mimo create group 1 mimo-type 1-plus-0-sd radio 2
port 1 radio 2 port 2
2 Enter the following command in root view to enable the Space Diversity
group:
root> radio mimo set-admin group 1 admin enable
3 Repeat Steps 1 and 2 for the second unit.
Note:
The identity of the active and standby units is not determined until
unit protection is configured.
4 Configure Unit Protection, according to the instructions in
Protection with HSB Radio Protection (External Protection) (CLI)
5 On the active IP-20 unit, mute the transmitter of radio carrier2. For
Muting and Unmuting a Radio (CLI)
6 Perform Copy to Mate. See Step 3 in
Configuring HSB Radio Protection (CLI)
Important Note:
It is crucial to ensure that the port connected to the Diversity
antenna is muted in each IP-20 unit. If you perform Copy to Mate after
configuring unit protection, as indicated above, the mute
configuration will be copied to the standby unit. If you mute the
interface before configuring unit protection, you must make sure to
manually
mute the interface on
both
IP-20 units. Otherwise,
configuring unit protection will override the mute configuration.