User Guide for FibeAir® IP-20 All-Outdoor Products, CeraOS 10.5
Page 133 of 825
Ceragon Proprietary and Confidential
3.4
Configuring Multiband (Enhanced Multi-Carrier ABC)
This feature requires:
•
IP-20E ESP hardware version
3.4.1
Multiband Overview
Multiband bundles E-Band and microwave radios in a single group that is shared
with an Ethernet interface. This provides an Ethernet link over the radio with
capacity of up to 2.5 Gbps. A Multiband link is highly resilient because the
microwave link acts, in effect, as a backup for the E-Band link.
In normal circumstances, both links transmit simultaneously, dividing the traffic
between them. The maximum capacity of the IP-20C, IP-20S, or third-party radio
is user-configurable up to 1 Gbps, with the IP-20E
handling the rest of the link’s
capacity.
In the event of radio failure in one device, the other device continues to operate
to the extent of its available capacity. Thus, operators benefit from both the high
capacity of E-Band and the high reliability of microwave.
Notes:
LLDP is not supported between Eth2 of the IP-20E and Eth2 of the
IP-20C or IP-20S in Multiband configurations.
1588 Transparent Clock is not supported with Multiband
configurations.
Multiband with CeraOS versions 10.5 and higher is not compatible
over the link with Multiband using earlier versions. Therefore, when
upgrading the software on a Multiband link to CeraOS 10.5 or higher
from an earlier version, make sure to upgrade the remote unit first
when using inband management to avoid loss of management.
3.4.1.1
Multiband Operation
A Multiband node consists of an IP-20E unit and an IP-20C or IP-20S unit or a
third-party microwave radio.
Multiband uses a master/slave architecture in which the IP-20E serves as master
and the IP-20C, IP-20S, or third-party radio serves as slave. All traffic enters the
node via the 10GE port on the IP-20E (Eth1). Traffic is passed to a Multiband
group that includes Eth2 and the radio carrier. The Multiband group mechanism
divides the traffic, sending a portion of the traffic via Eth2 to the slave unit. The
rest of the traffic is transmitted via the IP-20E radio carrier.
The slave unit acts as a pipe. Traffic is passed from Eth2 to either a single radio
carrier or 2+0 Multi-Carrier ABC group, and transmitted. To ensure a smooth
traffic flow, the following must be configured on the IP-20C or IP-20S:
•
Automatic State Propagation, with
ASP trigger by remote fault
enabled.
•
Bandwidth Notification.
