Wendell odom

default-information originate always 
command, 490
default-information originate 
command, 489, 496
default OSPF routes, 489-491
default routers, 70, 370-372
default routes, 379, 383-384
default VLAN (Virtual Local Area 
Networks), 186
delete vlan.dat command, 117
description command, 153, 170, 363
designated ports. 
See 
DP
DHCP (Dynamic Host Configuration 
Protocol), 143, 286
diagrams (networking), 15, 26
difficult subnet masks, 334-338
digital certificates, split-MAC archi-
tectures, 640
Dijkstra SPF algorithm, 451
directed broadcast addresses, 283
disable command, 104
disabling
autonegotiation, 160
DTP, 203
ports, 230
switch interfaces, 155-156
VLAN, troubleshooting, 201-202
WLAN, 680
discarding state (RSTP), 229-230
discovering
duplicate addresses, 602
neighbor link addresses, 598-600
routers, 600-601
distance vector protocols, 446
distributed architectures, 634-638
distribution switches, 241
distribution system ports, 672-673
distribution systems. 
See 
DS
DNS (Domain Name Systems), 76-77
documentation, subnet plans, 267
double colon (::), 531
DP (Designated Ports), 217, 222-223, 
230
DR (Designated Routers)
BDR, 456-457
elections, configuration with 
broadcast network type (OSPF), 
504-506
DRAM (Dynamic Random-Access 
Memory), 99
DROthers routers, 457
DS (Distribution Systems), 616-618
DTP (Dynamic Trunking Protocol), 203