Each Cisco 7200 POP router has an ATM permanent virtual circuit (PVC) back to each core Gigabit Switch Router (GSR).

The central site houses two Cisco 12000 routers connected to the ATM backbone with OC-12 interfaces. These 10 aggregation POPs connect as a hub-and-spoke back to the Case SP central site using a private Optical Carrier (OC)-3c ATM backbone comprised of BPX 8620 ATM switches. The network consists of 10 POPs across the state. Overview of the Testing Network DescriptionĬase SP's network is primarily a T1-based service to subscribers who aggregate to a single Cisco 7200 router (with an NPE-200 and 128 MB of memory) at each point of presence (POP) in a hub-and-spoke fashion.This case includes the following sections: Throughout this case, the customer will be referred to as Case SP. The customer represented by this case study is a private Internet Service Provider (ISP) that offers Internet and intranet connectivity for the education and government sectors. This case study provides information about designing large-scale, high-speed aggregation networks using the Cisco 7200 series routers in an ATM network. QoS for AVVID Services over Low-Speed ATM VCs Configuration Example High Density Aggregation Network Case Study.QoS Testing for ATM in Airport Case Study.High Density Aggregation Network Case Study.This chapter includes the following case studies and configuration examples: Rather, the case studies are provided so that you can see how ATM traffic management is applied on a Cisco 7200 series router as it fits into the wider scope of a real network environment to solve common customer objectives. Therefore, there is no intent to fully explain the network implementations shown.

The network configuration examples include other Cisco Systems products as well as many configuration elements that are beyond the scope of this document. Therefore, while the information contained in this chapter might be helpful for your network, there are no guarantees that the sample configurations apply to or will benefit your specific environment.ĭue to their basis on real-world network configurations, the network case studies represent large and more complex network scenarios. However, it is important to realize that every network has unique characteristics and requirements. These Cisco Systems labs validate and test proposed customer network designs according to specified objectives, and make recommendations about configuration. All of the examples in this chapter represent actual lab-tested configurations from Cisco Systems proof-of-concept and solutions labs. This chapter provides case studies and configuration examples for enterprise networks using Cisco 7200 series routers in an ATM environment. ATM Traffic Management Case Studies and Configuration Examples

Atm cisco packet tracer example