RIPv2, 116 prefixes, 127 public IP network lookup, 129 route servers, 128 routing (example), 127 B3ZS (Bipolar Three Zero Substitution), 292 Binary Eight Zero Substitution (see B8ZS) B8ZS (Binary Eight Zero Substitution), 270, binary tree (fast switching), 185 binary trie, 188 bipolar violation (BPV), 275 Bipolar Three Zero Substitution (B3ZS), 292 backbone and nonbackbone areas, bipolar violation (BPV), 275 OSPF, 122 B3ZS line coding, 292 backbone routers, OSPF, 121 Bit Error Rate Test (BERT), 256 BackboneFast, 83 run by CSU/DSUs, 283 backplane in a 6509 chassis, 208 Index bit stuffing, 290 CANs (Campus Area Networks), 3 blades (modules), 16 defined, 5 blocking state (ports), 73, 76 interchangeability with MANs, 4 blocking nonforwarding ports, 75 capacity, increasing, 527 blue alarm (AIS), 279 Catalyst 3750 switch, 227-249 BNC connectors (10Base-2), 6 flex links, 233 bootflash: device, 411 interface ranges, 228 Border Gateway Protocol (see BGP) macros, 229-232 BPDU Guard, 81 port security, 238 BPDUs (bridge protocol data units), 74 QoS (Quality of Service), 247-249 BPV (bipolar violation), 275 SPAN (Switched Port Analyzer), 241-244 B3ZS line coding, 292 stacking, 227 break character, terminal server, 514 storm control, 233-238 BRI (Basic Rate Interface) ISDN links, 259 Voice VLAN, 244-246 bridge ID, 74 Catalyst Operating System (see CatOS) bridge protocol data units (BPDUs), 74 CatOS, 11 bridged load balancing, 396 BackboneFast, configuring, 84 bridged networks, 3 BPDU Guard, enabling and disabling, 81 e-commerce web site, 479 CAM table (content-addressable memory bridges, 66 table), 12 root bridge (switch), 73 channel (EtherChannel), 55 bridging, 478 controlling layer-2 operations on British Thermal Unit (BTU) values, 469 MSFCs, 198 broadcast domains, 8 determining if a switch can use a trunking broadcast networks, support by OSPF, 125 protocol, 34 broadcast storms, 9, 66, 67-72 EtherChannel, configuring and controlling, 233 managing, 61 troubleshooting with show process cpu hybrid mode switches, 201 history co