k Inversion (AMI), 357, 379 American Registry for Internet Numbers ASDM (Adaptive Security Device Manager), (ARIN), 677 Ameritech, 351 ASE LSAs, 139 AMI (Alternate Mark Inversion), 357, 379 ASICs (Application-Specific Integrated analog signals, 342 Circuits), 287 Analog Telephone Adapters (ATAs), 526 ASN (autonomous system number), 121, 127 ANI (Automatic Number Identifier), 527 association mac-list command, 520 announced transfers, 541 ATAs (Analog Telephone Adapters), 526 answer-address command, 554 atomic clocks, 690 AppleTalk Remote Access Protocol (ARAP), attended transfers, 541 audits, physical, 703 Application Control Engine (ACE) modules, authentication 15, 246 AAA, 449-457 application inspections, 477-479 basic, 437-449 application layer (ecommerce websites), 643 defined, 437, 449 application servers (ecommerce websites), 643 Kerberos 5, 453, 456 Application-Specific Integrated Circuits line, 453 (ASICs), 287 wireless networks, 514 ARAP (AppleTalk Remote Access Protocol), authentication open command, 517 authentication shared command, 517 area border router (ABR), 138 authorization, defined, 449 ARIN (American Registry for Internet auto qos command, 535 Numbers), 677 auto qos voip command, 338 ARP (Address Resolution Protocol) auto-cost reference-bandwidth command, 137 MAC addresses and, 12, 389 Automated Computer Time Service (ACTS), Nexus platform and, 277 ASAs (Adaptive Security Appliances) Automatic Call Distributor (ACD), 342, 527 access lists and, 417 Automatic Number Identifier (ANI), 527 application inspections, 477-479 autonegotiation configuring contexts, 486-488 best practices, 23 displaying IP addresses as names, 473-474 configuring, 19, 23 failover support, 490-501 functionality, 20 functionality, 459, 469 reasons for failure, 21-22 grouping, 421-423 autonomous system border router (ASBR), interfaces and, 470-473 logging considerations, 507-509 autonomous system number (ASN), 121, 127 managing contexts, 479-490 autonomous systems, 121, 127 multicontext mode, 470, 480, 482-484 AutoQoS, 338-34