See CESoE
(Circuit Emulation Service over
Ethernet)
Circuit Emulation Services (CES),
role in Carrier Ethernet, 50
circuit-bonded network, transport
of Ethernet frames over,
272??“275
circuit-bonding platform,
components of, 271??“272
Cisco, RPR solutions offered by, 366
Class A-C services, availability in
RPR MAC specification, 333
Class of Service (CoS), overview of,
65??“66
classA-C frames, role in
RPR MAC, 348
Index 535
CLECs (Competitive Local
Exchange Carriers),
significance of, 27
client layer, separating from
transport layer, 272
clock options, considering
in circuit emulation
scheme, 81??“82
clouds of bridges
interconnection of, 389??“390
in spanning tree alternatives,
404??“407
types of, 375??“376
CM (Color Mode) parameter, use
with service frames, 64
CMs (cable modems)
encryption keys used by, 154
provisioning, 153??“154
use with compliant DOCSIS
specifications, 157
use with hybrid fiber-coax, 151??“152
CMTS (cable modem termination
system), use with hybrid
fiber-coax, 151??“153
Coarse WDM (CWDM), relationship
to fiber networks, 208??“209
collector rings, use of, 115, 119
Committed Burst Size (CBS),
relationship to service
frames, 63
Committed Information Rate (CIR),
relationship to service
frames, 63
communications protocols
DOCSIS MAC LAYER, 152??“153
DOCSIS physical layer, 152
congestion points, indicating via
fairness procedure, 337
connectionless networks, forwarding
packets in, 421
connection-orientated networks,
forwarding of packets in, 422
Connectivity Fault Management
(CFM), status of, 409
connectivity layer, OAM at, 88
connectivity mechanism
role in LANs, 7
simplification of, 30
connectivity services
Carrier Ethernet services as,
60??“61
port- versus VLAN-based types
of, 71??“73
Conservative method, using to
adjust fairRate, 339
context containment, role in
MAC, 345
continuity check function,
relationship to OAM, 89
continuity check messages (CCMs),
troubleshooting Ethernets
with, 90
control frames, labeling in RPR
MAC, 348??“349
control plane QoS, role in MPLS, 433
Control plane, role in ESM
(Ethernet Service Model), 58
control word, fields in, 437??“438
converged transport, role in Carrier
Ethernet, 50
convergence, Ethernet as platform
for, 37??“38
Convergence Sublayer (CS),
relationship to
WiMAX, 470??“471
copper
standards for EFM, benefits of,
132
support for, 506??“511, 513
transporting Ethernet packets
over, 134??“135
copper-based technologies
limitations of, 141
universal reach of, 144
CoS (Class of Service), overview of,
65??“66
CS (Convergence Sublayer),
relationship to WiMAX,
470??“471
CSMA/CD (Carrier Sensing Multiple
Access/Collision Detection),
significance of, 10??“12
C-tag, 802.
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