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Establish Queueing and Congestion Strategies
Assign a Priority Group to an Interface
You can assign a priority list number to an interface. Only one list can be assigned per interface. To
assign an priority group to an interface, perform the following task in interface configuration mode:
Task Command
Assign a priority list number to the interface. priority-group list-number
Monitor the Priority Queueing Lists
You can display information about the input and output queues when priority queueing is enabled
on an interface. To do so, perform the following task in EXEC mode:
Task Command
Show the status of the priority queueing lists. show queueing priority
Enable Custom Queueing
To enable custom queueing, perform the tasks in the following sections. The first and third tasks are
required.
• Assign Packets to Custom Queues
• Specify the Maximum Packets and Bytes in the Custom Queues
• Assign a Custom Queue to an Interface
• Monitor the Custom Queueing Lists
Assign Packets to Custom Queues
You can assign packets to custom queues based on the protocol type or the interface where the
packets enter the router. In addition, you can set the default queue for packets which do not match
other assignment rules. To define the custom queueing lists, perform the following tasks in global
configuration mode:
Task Command
Establish queueing priorities based upon the
protocol type.
Establish custom queueing based on packets
entering from a given interface.
Assign a queue number for those packets that do
not match any other rule in the custom queue list.
queue-list list-number protocol protocol-name
queue-number queue-keyword keyword-value
queue-list list-number interface interface-type
interface-number queue-number
queue-list list-number default queue-number
All protocols supported by Cisco are allowed. The queue-keyword variable provides additional
options, including byte-count, TCP service and port number assignments, and AppleTalk, IP, IPX,
VINES, or XNS access list assignments. See the queue-list command syntax description in the
“Performance Management Commands” chapter in the Configuration Fundamentals Command
Reference.
When using multiple rules, remember that the system reads the queue-list commands in order of
appearance. When classifying a packet, the system searches the list of rules specified by queue-list
commands for a matching protocol or interface type. When a match is found, the packet is assigned
to the appropriate queue. The list is searched in the order it is specified, and the first matching rule
terminates the search.
Managing System Performance FC-363