- Policing and Shaping Overview
- IPv6 QoS: MQC Traffic Policing
- Configuring Traffic Policing
- IPv6 QoS: MQC Traffic Shaping
- Two-Rate Policer
- Policer Enhancement - Multiple Actions
- Percentage-Based Policing and Shaping
- Modular QoS CLI Three-Level Hierarchical Policer
- ATM Policing by Service Category for SVC and SoftPVC
- Modular QoS CLI Unconditional Packet Discard
- Control Plane Policing
- Control Plane Protection
- Control Plane Logging
- Management Plane Protection
- Class-Based Policing
- QoS Percentage-Based Policing
- Overhead Accounting
- Adaptive QoS over DMVPN
Contents
- ATM Policing by Service Category for SVC and SoftPVC
- Finding Feature Information
- Feature Overview
- Benefits
- Related Features and Technologies
- Related Documents
- Supported Platforms
- Supported Standards MIBs and RFCs
- Configuration Tasks
- Configuring ATM Policing by Service Category for SVC and SoftPVC
- Verifying ATM Policing by Service Category for SVC and SoftPVC
- Troubleshooting Tips
- Monitoring and Maintaining ATM Policing by Service Category for SVC and SoftPVC
- Example Monitoring and Maintaining ATM Policing by Service Category for SVC and SoftPVC
- Configuration Examples
- Example Non-UBR Traffic Policing
ATM Policing by Service Category for SVC and SoftPVC
Feature History
|
Release |
Modification |
|---|---|
|
12.2(4)B |
This feature was introduced on the Cisco 6400 NSP. |
|
12.2(13)T |
This command was integrated into Cisco IOS Release 12.2(13)T. |
This module describes the ATM Policing by Service Category for SVC/SoftPVC feature in Cisco IOS Release 12.2(13)T and includes the following sections:
- Finding Feature Information
- Feature Overview
- Supported Platforms
- Supported Standards MIBs and RFCs
- Configuration Tasks
- Monitoring and Maintaining ATM Policing by Service Category for SVC and SoftPVC
- Configuration Examples
Finding Feature Information
Your software release may not support all the features documented in this module. For the latest caveats and feature information, see Bug Search Tool and the release notes for your platform and software release. To find information about the features documented in this module, and to see a list of the releases in which each feature is supported, see the feature information table at the end of this module.
Use Cisco Feature Navigator to find information about platform support and Cisco software image support. To access Cisco Feature Navigator, go to www.cisco.com/go/cfn. An account on Cisco.com is not required.
Feature Overview
When configured, an ATM switch at the network side of a user-to-network (UNI) interface polices the flow of cells in the forward (into the network) direction of a virtual connection. These traffic policing mechanisms are known as usage parameter control (UPC). With UPC, the switch determines whether received cells comply with the negotiated traffic management values and takes one of the following actions on violating cells:
Pass the cell without changing the cell loss priority (CLP) bit in the cell header.
Tag the cell with a CLP bit value of 1.
Drop (discard) the cell.
The SVC/SoftPVC feature enables you to specify which traffic to police, based on service category, on switched virtual circuits (SVCs) or terminating VCs on the destination end of a soft VC.
Benefits
This feature enables you to select which and how traffic is affected by UPC. For example, you can configure your switch to pass all UBR traffic, but tag all other traffic types.
Related Features and Technologies
Intelligent early packet discard (EPD)
Intelligent partial (tail) packet discard
Related Documents
ATM Forum UNI 3.1 Specification
Supported Platforms
This feature is supported on the node switch processor (NSP) of the Cisco 6400 carrier-class broadband aggregator.
Supported Standards MIBs and RFCs
Standards
None
MIBs
CISCO-ATM-IF-MIB.my--New objects were created for per-service category SVC UPC intent.
To obtain lists of supported MIBs by platform and Cisco IOS release, and to download MIB modules, go to the Cisco MIB website on Cisco.com at the following URL:
http://www.cisco.com/public/sw-center/netmgmt/cmtk/mibs.shtml
RFCs
None
Configuration Tasks
- Configuring ATM Policing by Service Category for SVC and SoftPVC
- Verifying ATM Policing by Service Category for SVC and SoftPVC
- Troubleshooting Tips
Configuring ATM Policing by Service Category for SVC and SoftPVC
1. Switch(config)# interface atmslot/subslot/port
2. Switch(config-if)# atm svc-upc-intent [{abr | cbr | vbr-rt | vbr-nrt | ubr}] {tag | pass | drop}
DETAILED STEPS
| Command or Action | Purpose | |
|---|---|---|
| Step 1 | Switch(config)# interface atmslot/subslot/port |
Selects the ATM interface. |
| Step 2 |
Switch(config-if)# atm svc-upc-intent
[{abr | cbr | vbr-rt | vbr-nrt | ubr}]
{tag | pass | drop} Example: Example: (Repeat this step for each service category and UPC mode combination.) |
Specifies the UPC mode. If no service category is specified, then the UPC mode configuration is applied to all traffic types. |
Verifying ATM Policing by Service Category for SVC and SoftPVC
1. Enter the show atm vc or show atm vp EXEC command to display the UPC mode for a particular VC or VP.
2. Enter the show atm interface EXEC command. If the UPC mode is not the same for all service categories, the "Svc Upc Intent" field displays "by sc."
DETAILED STEPS
| Step 1 |
Enter the show atm vc or show atm vp EXEC command to display the UPC mode for a particular VC or VP. Example: Switch# show atm vc int atm 0/0/1 2 120 Interface:ATM0/0/1, Type:oc3suni VPI = 2 VCI = 120 Status:DOWN Time-since-last-status-change:1w1d Connection-type:PVC Cast-type:point-to-multipoint-leaf Packet-discard-option:disabled Usage-Parameter-Control (UPC):pass Wrr weight:2 Number of OAM-configured connections:0 OAM-configuration:disabled OAM-states: Not-applicable Cross-connect-interface:ATM0/0/1, Type:oc3suni ... |
| Step 2 |
Enter the show atm interface EXEC command. If the UPC mode is not the same for all service categories, the "Svc Upc Intent" field displays "by sc." Example:
Switch# show atm interface atm 8/0/1
Interface: ATM8/0/1 Port-type: oc3suni
IF Status: UP Admin Status: up
Auto-config: enabled AutoCfgState: completed
IF-Side: Network IF-type: NNI
Uni-type: not applicable Uni-version: not applicable
Max-VPI-bits: 8 Max-VCI-bits: 14
Max-VP: 255 Max-VC: 16383
ConfMaxSvpcVpi:255 CurrMaxSvpcVpi:255
ConfMaxSvccVpi:255 CurrMaxSvccVpi:255
ConfMinSvccVci:35 CurrMinSvccVci:35
Svc Upc Intent:by sc
Signalling: Enabled
ATM Address for Soft VC:47.0091.8100.0000.0002.b9ae.9301.4000.0c84.0010.00
Configured virtual links:
PVCLs SoftVCLs SVCLs TVCLs PVPLs SoftVPLs SVPLs Total-Cfgd Inst-Conns
3 4 0 0 1 0 0 8 7
Logical ports(VP-tunnels): 0
Input cells: 3036674 Output cells: 3036816
5 minute input rate: 0 bits/sec, 0 cells/sec
5 minute output rate: 0 bits/sec, 0 cells/sec
Input AAL5 pkts:1982638, Output AAL5 pkts:1982687, AAL5 crc errors:0
|
Troubleshooting Tips
If a VC is not configured with the appropriate UPC mode, make sure that the VC was set up after the atm svc-upc-intent command was configured. Changes to the UPC mode take affect after the VC is torn down and set up again.
Monitoring and Maintaining ATM Policing by Service Category for SVC and SoftPVC
|
Command |
Purpose |
|---|---|
Switch# show atm interface
|
Displays ATM-specific information about an ATM interface. |
Switch# show controllers atm slot/subslot/port |
Displays information about a physical port device. Includes dropped (or discarded) cells. |
Switch# show atm vc [interface atm slot/subslot/port ] |
Displays the configured UPC action and intelligent packet discard mechanisms, as well as the number of cells discarded due to UPC violations. |
Example Monitoring and Maintaining ATM Policing by Service Category for SVC and SoftPVC
Switch# show atm vc interface atm 3/0/1.51 51 16
Interface: ATM3/0/1.51, Type: oc3suni
VPI = 51 VCI = 16
Status: DOWN
Time-since-last-status-change: 2w0d
Connection-type: PVC
Cast-type: point-to-point
Packet-discard-option: enabled
Usage-Parameter-Control (UPC): pass
Wrr weight: 32
Number of OAM-configured connections: 0
OAM-configuration: disabled
OAM-states: Not-applicable
Cross-connect-interface: ATM2/0/0, Type: ATM Swi/Proc
Cross-connect-VPI = 0
Cross-connect-VCI = 73
Cross-connect-UPC: pass
Cross-connect OAM-configuration: disabled
Cross-connect OAM-state: Not-applicable
Encapsulation: AAL5ILMI
Threshold Group: 6, Cells queued: 0
Rx cells: 0, Tx cells: 0
Tx Clp0:0, Tx Clp1: 0
Rx Clp0:0, Rx Clp1: 0
Rx Upc Violations:0, Rx cell drops:0
Rx pkts:0, Rx pkt drops:0
Rx connection-traffic-table-index: 6
Rx service-category: UBR (Unspecified Bit Rate)
Rx pcr-clp01: 424
Rx scr-clp01: none
Rx mcr-clp01: none
Rx cdvt: 1024 (from default for interface)
Rx mbs: none
Tx connection-traffic-table-index: 6
Tx service-category: UBR (Unspecified Bit Rate)
Tx pcr-clp01: 424
Tx scr-clp01: none
Tx mcr-clp01: none
Tx cdvt: none
Tx mbs: none
No AAL5 connection registered
Configuration Examples
Example Non-UBR Traffic Policing
In the following example, the UBR traffic on ATM 3/0/0 is passed while all other traffic is policed:
Switch(config)# interface atm 3/0/0 Switch(config-if)# atm svc-upc-intent ubr pass Switch(config-if)# atm svc-upc-intent cbr tag Switch(config-if)# atm svc-upc-intent vbr-rt tag Switch(config-if)# atm svc-upc-intent vbr-nrt tag Switch(config-if)# atm svc-upc-intent abr drop