407
DS (Differentiated Services), 13–20, 52
DSBM (Designated Subnet Bandwidth Manager), 47
DSCP (DiffServ codepoint), 19, 32, 68, 96
CoS, 58
internal, 150–152, 206
managing, 232
mapping, 225
policed mark-down mapping, 297–300
policing, 221
reclassification, 210
to-CoS mapping, 176
trust, 154–155, 206
DSCP-to-CoS mapping, 296–297
dWRED (distributed weighted random early detection),
370–373
E
EBS (excess burst size), 356
ECN (explicit congestion notification), 23
EF (expedited forwarding) PHBs, 56
EF treatment, 26
egress policing, 164–165
EI (enhanced image), 148
EMI (enhanced multilayer image), 148
enabling
global configuration, 149
MLS, 106
QoS, 100, 205, 257
end-to-end delay, 6
enhanced image (EI), 148
enhanced multilayer image (EMI), 148
EOBC (Ethernet out-of-bound channel), 339
essential traffic, configuring, 348
Ethernet out-of-band channel (EOBC), 339
Ethernets, ASIC port responsibilities, 261
exceed-action parameter, 222
excess burst (Be), 353
excess burst size (EBS), 356
exit command, 135
expedited forwarding, 23–28
expedited forwarding (EF) PHBs, 56
explicit congestion notification (ECN), 23
extended trust, 63–64, 112, 156
F
fair-queue option, 134
Fast Ethernet, 186
fasttrack keyword, 345
feature sets, Cisco IOS software, 148
FECNs (forward-explicit congestion notifications), 360
fields, DS, 52
FIFO (First In, First Out), 10, 33
FlexWAN, 337–341
class-based policers, 356–359
classification, 342–346
congestion, 363–373
marking, 346–352
policing, 352, 362
QoS support, 341–342
shaping, 352–363
flows, policing, 44–46
forward-explicit congestion notifications (FECNs), 360
forwarding, 23–28
AF, 54
CEF, 338
fragmentation, LFI, 48
Frame Relay traffic shaping (FRTS), 20, 43
frames, 211–214
ingress, 258
switches, 95–96
tagged, 104
token buckets, 41–44
trust, 275
untagged
Catalyst 4000 CatOS switches, 86
marking, 104
FRTS (Frame Relay traffic shaping), 20, 43
G
g command, 219
general QoS packet-flow architecture, 73
generic traffic shaping (GTS), 20, 43
Gigabit Ethernet
core layer switches, 392–400
distribution layer switches, 387–392
ports (ASICs), 261
global Auto-QoS, 327
global configuration, 149. See also configuration
Catalyst 4000 IOS Family of switches, 205
services module switches, 240–241
goals of QoS, 5–9
groups, QoS, 130
GTS (generic traffic shaping), 20, 43
guaranteed rates, policers, 220
H
hardware
Catalyst 6500 switches, 253–256, 339–341
requirements, 97–100
headers, ISL, 259
high-water marks, 266
history option, 137
hops, per-hop behavior, 53–58
hosts, keywords, 108
hosts, keywords

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