Details QoS on PWHE interfaces, including traffic mapping, marking, policing, queuing, aggregate shaping, policy options, limitations, and configuration procedures for flat and hierarchical QoS.
Quality of Service (QoS) on Pseudowire Headend (PWHE) is a network traffic management feature that
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applies QoS classification, marking, policing, and queuing on pseudowire headend interfaces
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ensures prioritized forwarding of customer traffic that enters a pseudowire, and
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enhances the performance and reliability of Layer 2 and Layer 3 VPN services on edge routers.
QoS on PWHE and the importance of headend
PWHE allows Layer 2 services to be extended over a Layer 3 network. By applying QoS at the headend, traffic entering the pseudowire can be policed, shaped, and marked to maintain consistent QoS treatment across the MPLS or IP backbone. This ensures that latency-sensitive traffic such as voice or video is forwarded with the appropriate priority.
| Feature Name |
Release Information |
Feature Description |
|---|---|---|
| QoS on PWHE |
Release 26.2.1 | Introduced in this release on: Fixed Systems (8700 [ASIC: K100]) (select variants only*) This feature requires egress feature capability on supported platforms. Use the hw-module profile edge-mode CLI command to enable the feature. The feature introduces these changes: CLI:
*This feature is now supported on:
|
| QoS on PWHE |
Release 26.1.1 | Introduced in this release on: Centralized Systems (8400 [ASIC: K100])(select variants only*) * This feature is now supported on Cisco 8404-SYS-D routers. |
| QoS on PWHE |
Release 25.4.1 |
Introduced in this release on: Fixed Systems (8700 [ASIC: K100], 8010 [ASIC: A100])(select variants only*) *This feature is supported on:
|
| QoS on PWHE |
Release 25.1.1 |
Introduced in this release on: Fixed Systems (8700 [ASIC:K100])(select variants only*) *This feature is now supported on Cisco 8712-MOD-M routers. |
| QoS on PWHE |
Release 24.3.1 |
Introduced in this release on: Fixed Systems (8200 [ASIC: P100], 8700 [ASIC: P100])(select variants only*); Modular Systems (8800 [LC ASIC: P100])(select variants only*) You can now prioritize critical services like voice, video, and real-time applications for network traffic entering a Pseudowire Headend (PWHE) interface, which then forwards the prioritized traffic into the pseudowire to be transported over a packet-switched network, such as an IP or MPLS network. The feature introduces the show qos-ea default-queue command. The feature modifies the *This feature is supported on:
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QoS on PWHE in practice
For example, a service provider can configure QoS on a PWHE interface so that voice and video services are prioritized when they enter the pseudowire. These packets are then transported across the MPLS core with markings that preserve their service class, ensuring consistent performance end-to-end.