User Guide for FibeAir® IP-20 All-Outdoor Products, CeraOS 10.5
Page 234 of 825
Ceragon Proprietary and Confidential
5.4
Configuring Header De-Duplication and Frame Cut-Through
Note:
For IP-20E and IP-20V, Header De-Duplication is available for all
channels except 500 MHz. Make sure to disable Header De-Duplication
before selecting a 500 MHz MRMC script.
Header De-Duplication enables operators to significantly improve Ethernet
throughout over the radio link without affecting user traffic. Header
De-Duplication can be configured to operate on various layers of the protocol
stack, saving bandwidth by reducing unnecessary header overhead. Header De-
duplication is also sometimes known as header compression.
Note:
The Header De-Duplication and Frame Cut-Through configuration
must be identical on both sides of the link.
If Frame Cut-Through is used together with 1588 Transparent Clock,
the 1588 packets must be given a CoS that is not assigned to the
fourth priority queue.
Using the Frame Cut-Through feature, frames assigned to queues with 4th priority
pre-empt frames already in transmission over the radio from other queues. After
the 4
th
queue frames have been transmitted, transmission of the pre-empted
frames resumes.
Note:
Frame Cut-Through cannot be used together with 1588 Transparent
Clock.
To configure Header De-Duplication and Frame Cut-Through:
1 Select
Radio > Ethernet Interface > Configuration
. The Radio Ethernet
Interface Configuration page opens.
◦
For multi-carrier units, the Radio Ethernet Interface Configuration page
initially displays a table as shown in
◦
For IP-20S units, a page appears, similar to
(which shows an IP-
20C/IP-20C-HP page).
Figure 169: Radio Ethernet Interface Configuration Page
–
IP-20C/IP-20C-HP
