utes learned via EIGRP, 120 Accounting), 353-360 summary for different routing applying method lists, 360 protocols, 93 configuring security server, 354-356 using as route tag, 147 creating method lists, 356-360 add keyword, using with switchport trunk enabling, 353 pruning vlan command (IOS), 53 basic (non-AAA), 343-353 Add/Drop (telecom terminology), 254 configuring local users, 344 Address Resolution Protocol (see ARP) line passwords, 343 addresses and phone numbers of end points PPP authentication, 347-353 (frame relay service), 302 between routers, support by RIPv2, 116 Index Authentication (AAA), 353 backup designated router (BDR), OSPF, 122, authentication chap command, 351 Authentication, Authorization, and Backward-Explicit Congestion Notification Accounting (see AAA (BECN), 308 authentication) balancing algorithms, 398 Authorization (AAA), 353 bandwidth, 255 authorization acknowledgment limiting/guaranteeing with QoS, 421 (AUTH-ACK), 348 misconceptions about QoS, 429 authorization request (AUTH-REQ), 348 requirements for protocols in QoS auto (dynamic switchport mode), 38 design, 433-435 auto mode (PAgP), 60 sharing in frame relay networks, 302 auto qos voip command, 247 utilization graph for a frame-relay auto-cost reference-bandwidth command link, 303 (OSPF), 121 bandwidth command, 437 Automated Computer Time Service bandwidth-based metrics (ACTS), 511 EIGRP Automatic Call Distributor (ACD), 254 bandwidth in Kbps, 136 auto-negotiation, 19-23 effective bandwidth metric best practices, 22 (loading), 136 configuring, 23 GRE tunnel interface, 156 failures of, 20 OSPF, 108, 121, 137 common failure scenario, 22 basic (non-AAA) authentication, 343-353 how it works, 20 configuring local users, 344 autonomous system border router (ASBR), line passwords, 343 OSPF, 121 PPP authentication, 347-353 autonomous system external (ASE) Basic Rate Interface (BRI) ISDN links, 259 LSAs, 122 bay face layouts, 468 autonomous system number (see ASN) B-channels (bearer channels), 259 autonomous systems BDR (backup designated 