BelAir100SN User Guide
Wi-Fi Backhaul Link Configuration
May 31, 2010
Confidential
Document Number BDTM11001-A01 Released
As in example 1, RadioB is measuring a signal strength of -54 dBm from RadioA.
RadioA has a MAC address of 00:0d:67:08:63:31 and is physical interface
wifi-4-1 on a node with IP address 180.1.5.180.
Example 3: Mobile Backhaul Mesh
/interface/wifi-1-1# show backhaul status
Backhaul Links:
Link Radio Mac State(L,R) RSSI Radio Node IP Node Name
----- ----------------- ---------- ---- ----- -------- ----------
[M] 1 00:0d:67:09:23:6a fwd fwd -68 wifi-3-1 10.1.1.123 NYC_WALLST
[M] 1 00:0d:67:00:08:06 fwd UP -71 wifi-3-1 10.1.1.122 NYC_BROADWAY
In the previous output, there are two mobile backhaul mesh links. One is
forwarding while the other is listening.
Managing Mesh
Bandwidth
/interface/wifi-<n>-<m>/set backhaul traffic-limit
{transmit|inject} <max_rate>
This command lets you manage the rate at which the interface can transmit
traffic. The interface attempts to police incoming traffic depending on the
transmit
or
inject
setting.
The
max_rate
parameter is specified in kBits/s. Typically, it is set between 1000
and 4000 kBits/s. By default, the traffic limit is set to 0, meaning it is disabled.
The
transmit
setting is intended for interfaces in an MP-to-MP mesh. When this
setting is selected, the maximum traffic rate applies to both the interface’s
access traffic and its backhaul traffic through the mesh links. It also applies to all
clients that are associated to the interface. The goal is to equalize traffic from all
the various sources.
The
inject
setting is intended for interfaces configured in a linear chain of nodes,
where one interface feeds traffic to the next in the chain. When this setting is
selected, the maximum traffic rate does not apply to traffic originating from
backhaul links. The maximum traffic rate applies only to traffic originating from
other sources. The goal is to equalize traffic without interfering with through
traffic from previous nodes in the chain.
Note: Although this command may be used on any BelAir unit with the proper
hardware, it is intended for use on units in the previously described
configuration (MP-to-MP mesh or linear chain).