Appendix . Acronyms and Abbreviations

This appendix identifies abbreviations, acronyms, and initialisms used in this book and in the internetworking industry.

Many of these acronyms and other terms are also described in the Cisco Internetworking Terms and Acronyms resource, available at http://www.cisco.com/univercd/cc/td/doc/cisintwk/ita/.

Acronym

Expanded Term

6-to-4

IPv6-to-IPv4

ABR

Area Border Router

ACK

1. acknowledge

 

2. acknowledgment

 

3. acknowledgment bit in a TCP segment

ACL

access control list

AD

advertised distance

AFI

authority and format identifier

AfriNIC

African Network Information Centre

AH

Authentication Header

ALG

application layer gateway

ANSI

American National Standards Institute

AON

Application-Oriented Networking

API

application programming interface ...

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