Advanced MPLS Design and Implementation

Appendix C. MPLS Glossary

This MPLS glossary provides a list of the various MPLS-related terminology used in this book. Some of the definitions have several meanings when used in a different internetworking context. For information on abbreviations and acronyms not covered in this glossary, refer to the Internetworking Terms and Acronyms page at www.cisco.com/cpress/cc/td/doc/cisintwk/ita/index.htm.

Glossary

A

AAL.

ATM adaptation layer. The AAL accepts data from different applications and presents it to the ATM layer in the form of 48-byte ATM payload segments. AALs differ on the basis of the source-destination timing used, whether they use CBR or VBR, and whether they are used for connection-oriented or connectionless mode data transfer. At present, ...