Index I

H

H channels, 489

half duplex, 68, 489

half parameter, 68

hands-on labs

for inter-VLAN routing, 228, 228

external routing, 228-236

internal routing, 236-237

for MLS, 277-278

for multicast, 340-344, 340

for QoS, 394-397, 394

for STP, 201-202, 201

for switch blocks, 80-82, 80

for VLANs, 128-130, 128

handshakes, 489

HDLC (High-Level Data Link Control), 490

hello packets, 245-246

hello parameter, 168

hello timer, 177-178

helper addresses, 490

hierarchical addressing, 490

hierarchical model, 16-17, 18-19

access layer in, 19

core layer in, 18-19

distribution layer in, 19

hierarchical networks, 490

High-Level Data Link Control (HDLC), 490

High-Speed Communication Interface (HSCI), 490

High-Speed Serial Interface (HSSI), 490

HILI (High Level Interface), 47

HIP (HSSI Interface Processor), 490

holddown state, 490

hop counts

defined, 490

in DVMRP, 308

hops, 490

host addresses, 490

host management process, 301

hostname command, 62

hostname setting, 61-62

HSCI (High-Speed Communication Interface), 490

HSRP (Hot Standby Routing Protocol), 25, 375, 375

configuring, 377-380

defined, 490

for ISPs, 380

operation of, 375-377, 376

SLB in, 381-382

HSSI (High-Speed Serial Interface), 490

HSSI Interface Processor (HIP), 490

hubs, 47

defined, 490

in VLANs, 90