- Download
Software
- Research a
Problem - Case Management
- Communities and Forums
- Contract & Product Management
- Technical Documentation Advanced Search
- Documentation Feedback Form
- Documentation Symbols Key
- End-of-Life Products
- Guidelines and Policies
- Security Resources
Juniper was the first North American IP routing vendor to achieve the prestigious TL 9000 certification by the Quality of Excellence for Suppliers of Telecommunications (QuEST) Forum in the router category, for design, development, provision and service and support.
What is J-Care?
It's the world-class service and support that you expect from a company that delivers the industry's best infrastructure and security products. With J-Care, you now have the confidence knowing that Juniper will do our part to keep you on top of the world!
Example: Simple Shared Shaping for ATM VPs
In the example shown in Figure 1, VP 1 is shaped to a shared rate of 5 Mbps. The shared shaper requires that voice and video traffic be carried in queues associated with the logical interface, which in this scenario is the VP. VP-level queuing does not guarantee fairness to the voice and video traffic for each VC, but fairness is not a major issue because admission control guarantees that the voice and video queues do not become congested.
This example assumes the same traffic class and traffic-class group configurations that are used in Example: Simple Shared Shaping for ATM VCs.
Figure 1: VP Shared Shaping
The following set of commands configures the shared shaper in Figure 1.
(config)#qos-profile vp-subscriber1 (config-qos-profile)#atm-vp node scheduler-profile shared-5mbps (config-qos-profile)#atm-vp node group AF (config-qos-profile)#atm-vp node group EF (config-qos-profile)#atm-vc node (config-qos-profile)#atm-vc queue traffic-class best-effort scheduler-profile default (config-qos-profile)#atm-vp queue traffic-class video scheduler-profile 2mbps (config-qos-profile)#atm-vp queue traffic-class voice scheduler-profile 400kbps (config-qos-profile)#exit
In this example, the best-effort scheduler node for the VP is shaped to a shared rate of 5 Mbps. The EF and AF queues for the VP share the 5 Mbps with the best-effort traffic. The EF queue has first claim on the shared 5 Mbps, but only up to its individual shaping rate of 400 Kbps. The AF queue claims up to the next 2 Mbps. The VC-level best-effort queues obtain whatever bandwidth remains of the 5 Mbps after the AF traffic and EF traffic have made their claims. This QoS profile is appropriate for low-CDV mode. If the provider configures a shapeless VP tunnel in the SAR, QoS sets the SAR shaper for the VP to match the 5-Mbps shared-shaping rate, and the CDV is bounded for the VP tunnel.
