User's Manual

Fortress ES-Series CLI Guide: Networking and Radio Configuration
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To determine where to set rssi and rate limits, consider the
video stream’s bit rate, the number of streams, other traffic,
and so on. For example, Fortress recommends an RSSI floor
of -80 dBm and bit-rate floor of 12 Mbps for a single, 3-Mbps
video stream sent to a cluster of four receivers.
# set mesh –rssi - 80 –rate 12
It is not necessary to continually change clamping mode values
if RSSI is near the set limit. The value set by –
rssi is subject
to dampening in cases where the link’s RSSI changes quickly.
Clamping will be activated if the RSSI goes below the value set
by
–rssi, and the node will not resume transmitting unless the
RSSI climbs by 5dBm. This provides a buffer so that the
system does not act too quickly on nominal changes, and
increases tolerance to rapid changes.
Multicast clamping applies only to IPv4 multicast addresses
that are not treated as broadcast, per RFC 4541.
Multicast addresses that follow the format X.0.0.Y or
X.128.0.Y, where X is in the range 224–239 (inclusive), and Y
is in the range 1–255 (inclusive), are treated as broadcast, and
therefore are not affected by multicast clamping. For example,
the IPv4 address 224.0.0.1 would not be affected by this
setting. Unaffected addresses can be assigned to low bit-rate
multicast traffic, such as text, to ensure that such traffic
continues to flow even while the higher bit-rate video is being
clamped.
3.2.3.5 Setting Mesh Routing Reactivity
FastPath Mesh network deployments must balance the stability
of the network against its reactivity to changes in network
topology. Reactivity permits the network to quickly detect and
adjust to topology changes with minimal network traffic
disruption. Stability allows the network to filter out unnecessary
topology changes to provide optimized throughput.
Three levels of reactivity can be configured on the Mesh Point.
# set mesh -reactivity least|medium|most
The least reactivity is appropriate for stationary FastPath
Mesh network and for large deployments of 30 or more nodes.
A mobile deployment should use the
most reactive setting (the
default). The
medium setting offers a compromise between
stability and reactivity.
3.2.3.6 Setting Mesh Packet Time To Live
In a highly-interconnected FastPath Mesh network deployment,
it is possible to have many different routing paths of
approximately equal preference between any two nodes. In this
situation, mesh’s fast routing changes may result in a