User's Manual

EnRoute500 User’s Guide
TR0149 Rev. C5
89
The ‘out.default.default.limit’ value is applied to interfaces that have the ‘out.<output
intf>.<input intf>.limit’ parameter set to ‘inherit’.
The example below shows how to limit the maximum output rate of voice, video, best effort,
and background traffic from wlan1 through the mesh0 interface to 256 kbps, 1 Mbps, 256 kbps,
and 256 kbps, respectively.
> use qos
qos> set out.mesh0.wlan1.vo.limit=256
qos> set out.mesh0.wlan1.vi.limit=1024
qos> set out.mesh0.wlan1.be.limit=256
qos> set out.mesh0.wlan1.bk.limit=256
13.3 Rate Reservation
Rate reservation is used to guarantee bandwidth for certain types of traffic. Rate reservations
can be made for traffic based on:
• The traffic input and output interfaces
• The traffic type, input interface, and output interface
For rate reservations to be enforced, a rate limit must be set for the traffic type that
the reservation is made for. Setting a rate limit for a broader traffic type, of which the
one the reservation is made for is a subset, is also acceptable. For example, when
making a rate reservation for voice traffic from wlan1 to mesh0
(‘out.mesh0.wlan1.vo.reserve’), a limit must be set with ‘out.mesh0.limit’,
‘out.mesh0.wlan1.limit’, or ‘out.mesh0.wlan1.vo.limit’.
Rate reservations guarantee bandwidth for a particular traffic type, but if no such traffic is
present, the bandwidth reserved will be returned to the pool of available bandwidth for other
traffic types to use. The points at which rate reservations can be made are shown in Figure 46.
These points are similar to where rate limits can be placed, except that rate reservations
require both an input and output interface, whereas rate limits can be made without specifying
an input interface.