Nokia 7705 - Page 144

QoS and QoS Policies
144
Quality of Service Guide
3HE 11014 AAAC TQZZA Edition: 01
Network queue policies are identified with a unique policy name that conforms to the
standard 7705 SAR alphanumeric naming conventions. The policy name is
user-configured when the policy is created.
Network queue policies can be configured to use up to 16 queues (8 unicast and 8
multicast). This means that the number of queues can vary. Not all user-created
policies will require and use 16 queues; however, the system default network queue
policy (named default) does define 16 queues.
The queue characteristics that can be configured on a per-forwarding class basis
are:
• Committed Buffer Size (CBS) as a percentage of the buffer pool
• Maximum Buffer Size (MBS) as a percentage of the buffer pool
• High-Priority-Only Buffers as a percentage of MBS
• Peak Information Rate (PIR) as a percentage of egress port bandwidth
• Committed Information Rate (CIR) as a percentage of egress port bandwidth
Table 29 describes the default network queue policy definition.
Note:
• The system default network queue policy cannot be modified or deleted.
• In the table, the value for Rate in the Definition column is the PIR value.
Table 29 Default Network Queue Policy Definition
Forwarding Class Queue Definition Queue Definition
Network-Control (nc) 8 Rate = 100%
CIR = 10%
MBS = 2.5%
CBS = 0.25%
High-Prio-Only = 10%
16 Rate = 100%
CIR = 10%
MBS = 2.5%
CBS = 0.1%
High-Prio-Only = 10%
High-1 (h1) 7 Rate = 100%
CIR = 10%
MBS = 2.5%
CBS = 0.25%
High-Prio-Only = 10%
15 Rate = 100%
CIR = 10%
MBS = 2.5%
CBS = 0.1%
High-Prio-Only = 10%