LOS (loss of signal), 275, 285 class maps, 435-437 low-latency queuing (see LLQ) policy maps, 437 LSAs (link state advertisements), OSPF, 122 service policies, 438 types of, 122 LMI (Local Management Interface), 307-308 congestion avoidance in frame relay, 308 determining if you're receiving, 317 types available on Cisco routers, 307 M13 (Multiplexed DS1 to DS3), 289 load balancing, 56-60 MAC address tables, 12 CSMs, load-balanced network instability in looped environment, 72 MAC addresses (example), 405-407 over switching paths, 190-194 ACLs based on, 335, 336 CEF, 193 designated root, all zeros, 78 fast switching, 192 format on different systems, 13 process switching, 190-192 getting for a device on Solaris server load balancing (see SLB) (example), 13 types of, 396-398 load balancing with, 56-60 Cisco technologies, 397 options, 58 local access and transport area (LATA), 260 referenced by multicast packets, 103 Local Area Networks (see LANs) root bridge, 74 Local Directors, 397 secure, 238-241 local exchange carrier (LEC), 264 aging out, 240 show mac-address-table command on local loop, 264 local loopback, 281 IOS-based switch, 12 LOF (loss of frame), 275, 285 macro command, 229 logging macro description command, 231 configuring destinations and specifying macros, 229-232 level of logging, 389 major networks, 95, 99 PIX firewalls, 389 group of (see supernets) troubleshooting actions, 517 malformed packets, causing process switching, 192 Index management network, e-commerce web microseconds, EIGRP delay metric in, 136 site, 481 mls qos trust COS command, 245 MANs (Metropolitan Area Networks), 3 modular switches, 14 defined, 5 chassis-based, advantages of, 15 interchangeability with CANs, 4 power requirements for modules, 16 mark (T1 signaling), 270 router contained in supervisor marking of frames to be sent over a trunk, 34 (CPU), 197 marking packets (QoS), 422 module ContentSwitchingModule module# match command (in route maps), 174 command, 401 matching packet destination address, 177 module CSM module# command