Specifications

Command Summary

588 SSR Command Line Interface Reference Manual

Precedence

A precedence from 1 – 7 is associated with each field in a flow. The SSR uses the

precedence value associated with the fields to break ties if packets match more than one

flow. The highest precedence is 1 and the lowest is 7. Here are the default precedences of

the fields:

• IP – destination port (1), destination address (2), source port (3), source IP address (4),

TOS (5), interface (6), protocol (7).

• IPX – destination network (1), source network (2), destination node (3), source node (4),

destination port (5), source port (6), interface (7).

Use the qos precedence ip and qos precedence ipx commands to change the default

precedences.

Queuing Policies

You can use one of two queuing policies on the SSR:

• strict priority – assures the higher priorities of throughput but at the expense of lower

priorities. For example, during heavy loads, low-priority traffic can be dropped to

preserve throughout of control-priority traffic, and so on.

• weighted fair queuing – distributes priority throughput among the four priorities

(control, high, medium, and low) based on percentages.

The SSR can use only one queuing policy at a time. The policy is used on the entire SSR.

The default queuing policy is strict priority.

Command Summary

Table 29 lists the qos commands. The sections following the table describe the command

syntax.

Table 29. qos commands

qos precedence [sip <num>] [dip <num>] [srcport <num>] [destport <num>]

[tos <num>] [protocol <num>] [intf <num>]

qos precedence ipx [srcnet <num>] [srcnode <num>]

[srcport <num>] [dstnet <num>] [dstnode <num>] [dstport <num>] [intf <num>]

qos set ip <name> <priority> <srcaddr/mask>|any <dstaddr/mask>|any <srcport>|any

qos set ipx <name> <priority> <srcnet>|any <srcmask>|any <srcport>|any

<dstnet>|any <dstmask>|any <dstport>|<interface-list>|any