User's Manual

2. System Description 2-19
© 2012 Moseley, Inc. All Rights Reserved. 602-16620-01, Rev. A
Figure 2-20. Ethernet Quality of Service (QoS)
2.13 Gigabit Ethernet Link Aggregation
Configuration
2.13.1 2+0 East/East Configuration
EVENT 5800 is capable of aggregating link bandwidth in 2+0 mode to achieve up to 600
Mbps Ethernet throughput when used with the Wideband Modem/IF modules in 56MHz
with 128-QAM capable Radio Transceivers. The 2+0 East/East configuration allows for the
doubling of the throughputs.
When configured for 2+0 East/East, EVENT 5800 balances the traffic between the two
links based on the source and destination MAC addresses of the Ethernet packets.
Sufficient diversity of MAC addresses is required to achieve full usage of the 2+0
East/East configuration.
In the event of a link failure, throughput will only be reduced by one-half, and traffic on
the failed link will be automatically re-routed to the remaining link.
2.13.2 4+0 East/East Configuration
In addition to aggregating two links, EVENT 5800 is capable of pairing with another
EVENT 5800 to aggregate a total of four links to achieve a maximum throughput of 1000
Mbps when used with Wideband Modem/IF modules in 50MHz with 128-QAM capable
Radio Transceivers.
As with 2+0 East/East, EVENT 5800 balances the traffic between the four links based on
the source and destination MAC addresses of the Ethernet packets. Sufficient diversity of
MAC addresses is required to achieve full usage of the 4+0 East/East configuration.
In the event of a link failure, throughput will only be reduced by one-quarter, and traffic
on the failed link will be automatically re-routed to the remaining links