Chapter3.Implementations and Platforms


Chapter 3. Implementations and Platforms

This chapter applies all the concepts from the previous two to actual implementations. We will analyze the details of the MPLS and PNNI implementations, as well as draft other Cisco Systems, Inc. proprietary implementations, such as AR and PAR. Also, we will explore Virtual Switch Interface (VSI) slave-specific implementations, such as logical interface number (LIN) encoding and resource management.

This is a product-oriented chapter, and as such, it is subject to modifications and aging. The implementations are studied from an architectural standpoint, so the following pages probably won't be outdated in the near future.

This chapter assumes that you have some knowledge of the switch platforms. Up-to-the-minute switching product information can be found at Cisco Connection Online (CCO) UniverCD at http://www.cisco.com/univercd/home/home.htm. Select Cisco WAN Switching Solutions under Cisco Product Documentation.

Many of the features and characteristics covered in this chapter are software release-specific. This chapter does not contain release or baseline information.

Before diving into the details of the specific MPLS and PNNI implementations, we'd like to repeat one of the most important concepts about multiservice switches: Networking software is decoupled from platform specifics by the VSI. Both MPLS and PNNI software is common in all these implementations. PNNI and MPLS software manage logical interfaces, whereas each platform manages the physical interface specifics.




Cisco Multiservice Switching Networks
Cisco Multiservice Switching Networks
ISBN: 1587050684
EAN: 2147483647
Year: 2002
Pages: 149

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