HP-UX IPQoS A.01.00 Administrator's Guide (October 2005)

HP-UX IPQoS Configuration Files
Policy Blocks
Chapter 472
res[ervation] b1[suffix]
Reserves the specified amount of bandwidth, b1[suffix], for outbound
traffic matching any filter used by the policy. Whenever there is less traffic
in this class than the reservation specified, unused bandwidth is available
for other traffic.
The b1 parameter specifies the numeric value of the reservation bandwidth.
The [suffix] parameter can be either a percent sign (%) or one of the
letters k, K, m, or M. The % is mutually exclusive with k, K, m, or M. The %
specifies a percentage of the associated adapter’s allowable bandwidth
capacity.
The valid range for b% is between 0 and 100 inclusive.
The k, K, m, and M options represent a shorthand to avoid typing zeros. Only
one of these options can be specified per instance. The k and K options both
represent 1000 bits/second. The m and M options both represent 1,000,000
bits/second. The range for b[k,K,m or M] is from 0 to the full bandwidth of
the associated adapters. If [suffix] is not specified, b1 is interpreted as
bits/second. For example, the following are all equivalent to 5000
bits/second:
• 5000
• 5k
• 5K
No white space is allowed between b1 and the [suffix].
The default reservation bandwidth if none is specified is 0. When res is 0,
the matching traffic class is always dropped. For traffic classes that you
don’t want to allow on the network, you can either specify res 0, or not
specify a res value and use the default of 0.
The sum of the reservations for all policies associated with a specific adapter
cannot be greater than the adapter’s full bandwidth minus the implicit
default flow’s rate. For example, since the implicit default flow uses
80Kbps, you can reserve only the adapter’s full bandwidth minus the
80Kbps reserved by the implicit default flow.
In the case of VLANs, the aggregate of the reservations of policies of VLANs
that are based on the same physical adapter, and the policies of the base
adapter itself, cannot exceed the speed of the physical adapter minus the
80Kbps reserved by the implicit default flow.