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Configuring 8 Queues per Interface on the 1-Port Channelized OC12/STM-1 to DS1/E1 Line Card on Cisco 12000 Series Routers

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Configuring 8 Queues per Interface on the 1-Port Channelized OC12/STM-1 to DS1/E1 and 4-port Gigabit Ethernet Line Cards on Cisco 12000 Series Routers

Table Of Contents

Configuring 8 Queues per Interface on the 1-Port Channelized OC12/STM-1 to DS1/E1 and 4-port Gigabit Ethernet Line Cards on Cisco 12000 Series Routers

8 Queues per Interface Feature Overview

Benefits

Restrictions

Related Features and Technologies

Related Documents

Supported Platforms

Supported Standards, MIBs, and RFCs

Prerequisites

Configuration Tasks

Switching to 8 Queues per Interface—Optional

Switching Back to Default of 4 Queues per Interface—Optional

Verifying the Number of Queues per Interface

Configuration Examples

Example of Switching to 8 Queues per Interface

Example of Switching to 4 Queues per Interface

Example of Verifying the Number of Queues per Interface

Command Reference

Glossary


Configuring 8 Queues per Interface on the 1-Port Channelized OC12/STM-1 to DS1/E1 and 4-port Gigabit Ethernet Line Cards on Cisco 12000 Series Routers


Part Number: OL-8684-01 (Rev. A1) November 16, 2007

Feature History

Release
Modification

12.0(26)S

This feature was introduced on the 4-port Gigabit Ethernet line card on Cisco 12000 series routers.

12.0(32)S

This feature was introduced on the 1-port Channelized OC12/STM-1 to DS1/E1 line card on Cisco 12000 series routers.


This feature module contains the following sections:

8 Queues per Interface Feature Overview

Supported Platforms

Supported Standards, MIBs, and RFCs

Prerequisites

Configuration Tasks

Configuration Examples

Command Reference

Glossary

8 Queues per Interface Feature Overview

The Integrated Services Engine (ISE) line cards running Cisco IOS Release 12.0(32)S can now have up to 8 queues per interface.

ISE line cards support two modes for configure queues on an interface:

Mode 1 (default)—Allows 4 queues per interface. When 4 queues per interface are in operation, 1008 interfaces are possible.

Mode 2—Allows 8 queues per interface. When 8 queues per port are in operation, only half the number of interfaces are possible (504).

The default is 4 queues. To switch to 8 queues per port, use the hw-mod slot <slot num> qos interfaces queues 8 command. You are prompted to reset the line card. To reset the line card, use the hw-mod slot <slot num> reload command. When the line card comes up, 8 queues are assigned to each interface.

To revert to 4 queues per interface, use the no form of the hw-mod slot <slot num> qos interfaces queues 8 command. You are prompted to reset the line card. To reset the line card, use the hw-mod slot <slot num> reload command. When the line card comes up, 4 queues are assigned to each interface.

Benefits

Customers can now choose between configuring 4 queues per interface with 1008 interfaces or 8 queues per interface with 504 interfaces.

Restrictions

Using 8 queues per interface restricts the number of possible interfaces to 504, which is half the amount of interfaces that are possible in 4 queue mode.

Related Features and Technologies

Cisco IOS Quality of Service (QoS) Solutions for Cisco 12000 series routers

Related Documents

For information on configuring multicast traffic, refer to:

Cisco 12000 Series Router Configuration Guide for Cisco IOS Release 12.0S

Also refer to the Installation and Configuration Guide for a specific Cisco 12000 series router.

Supported Platforms

The QoS on 8 Queues per Port feature is supported on the following Engine 5 SPAs and line cards on Cisco IOS Release 12.0(26)S on Cisco 12000 series routers:

4-port Gigabit Ethernet

The QoS on 8 Queues per Port feature is supported on the following Engine 5 SPAs and line cards on Cisco IOS Release 12.0(32)S on Cisco 12000 series routers:

1-port Channelized OC12/STM-1 to DS1/E1

Supported Standards, MIBs, and RFCs

Standards

No new or modified standards are supported, and support for existing standards has not been modified.

MIBs

No new or modified MIBs are supported, and support for existing MIBs has not been modified.

RFCs

No new or modified RFCs are supported, and support for existing RFCs has not been modified.

Prerequisites

For 4-port Gigabit Ethernet, Cisco IOS Release 12.0(26)S software running with 4 queues per interface.

For 1-port Channelized OC12/STM-1 to DS1/E1, Cisco IOS Release 12.0(32)S software running with 4 queues per interface.

Configuration Tasks

The following sections contain configuration tasks for the 8 Queues per Interface feature. Each task in the list is identified as either required or optional.

Switching to 8 Queues per Interface—Optional

Switching Back to Default of 4 Queues per Interface—Optional

Verifying the Number of Queues per Interface

Switching to 8 Queues per Interface—Optional

Use the following configuration procedure to switch from the default of 4 queues per interface to 8 queues per interface.

 
Command
Purpose

Step 1 

Router(config)#config t

Enter configuration mode.

Step 2 

Router(config-if)#hw-mod slot <slot num> qos interfaces queues 8

Switch to 8 queues per interface mode.

Step 3 

Router(config-if)#hw-mod slot <slot num> reload

Reload the line card.

Switching Back to Default of 4 Queues per Interface—Optional

Use the following configuration procedure to switch from 8 queues per interface back to the default of 4 queues per interface.

 
Command
Purpose

Step 1 

Router(config)#config t

Enter configuration mode.

Step 2 

Router(config-if)#no hw-mod slot <slot num> qos interfaces queues 8

Switch to the default of 4 queues per interface mode.

Step 3 

Router(config-if)#hw-mod slot <slot num> reload

Reload the line card.

Verifying the Number of Queues per Interface

Use the following show commands to verify the number of queues per interface on the line card.

Command
Purpose
Router#show controller frfab queues

Displays the number of queues on all interfaces.

Router#show controller frfab queues <ifNum>

Displays the number of queues on the specified interface (ifNum) and information about each queue.


Configuration Examples

This section provides the following configuration examples:

Example of Switching to 8 Queues per Interface

Example of Switching to 4 Queues per Interface

Example of Verifying the Number of Queues per Interface

Example of Switching to 8 Queues per Interface

This example shows how to switch to 8 queues per interface.

Router(config)#config t
Router(config-if)#hw-mod slot 6 qos interfaces queues 8
Router(config-if)#hw-mod slot 6 reload

Example of Switching to 4 Queues per Interface

This example shows how to switch back to the default of 4 queues per interface.

Router(config)#config t
Router(config-if)#no hw-mod slot 6 qos interfaces queues 8
Router(config-if)#hw-mod slot 6 reload

Example of Verifying the Number of Queues per Interface

This example shows how to verify the number of queues per interface.

Router#show controller frfab queues 1022
FrFab Queue
Interface 1022
Queue#  Head    Tail    Length  Threshold       Enabled/Port
                        pkts    pkts
============================================================
4088    0       0       0       500             Y/1022
4089    0       0       0       500             Y/1022
4090    0       0       0       500             Y/1022
4091    0       0       0       500             Y/1022

Port 1022 queue-map configuration:
MinQ 4088       MaxQ 4091
HPR Enabled Y

Now, the cfg is

Serial6/0.1/1:1        unassigned      YES manual down                  down    
Serial6/0.1/2:1        unassigned      YES manual down                  down    
Serial6/0.1/3:1        unassigned      YES manual down                  down    
Serial6/0.1/4:1        unassigned      YES manual down                  down    
Serial6/0.1/5:1        unassigned      YES manual down                  down    
Serial6/0.1/6:1        unassigned      YES manual down                  down    
Serial6/0.1/7:1        unassigned      YES NVRAM  down                  down    
Serial6/0.1/8:1        unassigned      YES NVRAM  down                  down    

Interfaces with mfrs:

Serial6/0.1/2:1 MFR2
Serial6/0.1/3:1 MFR3
Serial6/0.1/4:1 MFR4
Serial6/0.1/7:1 MFR1

Command Reference

No new or modified commands were introduced for the 8 Queues per Interface feature for Cisco IOS Release 12.0(26)S or Cisco IOS Release 12.0(32)S.

Glossary

ISE

Integrated Services Engine

MIB

Management Information Base. Database of network management information that is used and maintained by a network management protocol, such as SNMP or CMIP. The value of a MIB object can be changed or retrieved using SNMP or CMIP commands, usually through a GUI network management system. MIB objects are organized in a tree structure that includes public (standard) and private (proprietary) branches.