New PDF release: Building MPLS-Based Broadband Access VPNs

By Kumar Reddy

ISBN-10: 1587051362

ISBN-13: 9781587051364

Enforce the layout ideas and configurations in the back of MPLS-based VPNs for broadband entry networks.The publication discusses how MPLS and its VPN provider are most sensible utilized in a broadband atmosphere, focusing on key layout matters and suggestions, including:How to control tens of millions of interfaces and host routes and enormous quantities of dynamic VPNs.When a digital domestic Gateway is necessary.Why use dynamic deal with assignmentHow routes can be summarized into the core.This publication is a part of the Networking expertise sequence from Cisco Press' which bargains networking pros worthy details for developing effective networks, knowing new applied sciences, and development profitable careers.

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There is no standards-based way to retrieve usage statistics. Some switches have some useful data in MIBs, but some don't. On routers, if there is hardware for it, you can enable NetFlow accounting. However, NetFlow accounting on high-speed networks generates a considerable amount of data, and the OSS systems must do a lot of data crunching and cross checking between systems to work out which flow belonged to which person at a given time. Architecture 2: Point-to-Point Protocol Networks Dial-up access was the first remote-access mechanism and PPP was extensively enhanced to work in this environment.

In the second case, an additional fiber-to-copper converter is required on the customer premises. The network operation is straightforward and is identical in many ways to a switched Ethernet network in a campus. Figure 2-9 shows the by-now-familiar cross section of protocol encapsulation across the network. Frames are switched from CPE to the aggregation router across intermediary Layer 2 devices. 1q VLANs. The VLANs are terminated on an aggregation router (so they are switched across the access domain), which is responsible for routing traffic to its destination.

If you are comfortable with PPP and bridging, then you can safely skip ahead to the next chapter. Architecture 1: Bridged Access Networks Bridged access networks are so named because they transport Ethernet frames transparently across a network. Ethernet is the most successful LAN protocol ever. It has basically replaced all other forms of Layer 2 encapsulation in enterprise networks and is arguably in the process of doing the same thing in residential networks. Not so very long ago, subscribers connected to the Internet directly from their PC using a modem.

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Building MPLS-Based Broadband Access VPNs by Kumar Reddy

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