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Conguring Lossless Queues.................................................................................................................................. 241
Conguring PFC in a DCB Map................................................................................................................................... 243
PFC Conguration Notes........................................................................................................................................243
PFC Prerequisites and Restrictions....................................................................................................................... 244
Applying a DCB Map on a Port.................................................................................................................................... 244
Conguring PFC without a DCB Map.........................................................................................................................245
Conguring Lossless QueuesExample:..................................................................................................................245
Priority-Based Flow Control Using Dynamic Buer Method....................................................................................246
Pause and Resume of Trac..................................................................................................................................246
Buer Sizes for Lossless or PFC Packets.............................................................................................................247
Behavior of Tagged Packets......................................................................................................................................... 247
Conguration Example for DSCP and PFC Priorities................................................................................................248
SNMP Support for PFC and Buer Statistics Tracking............................................................................................248
Performing PFC Using DSCP Bits Instead of 802.1p Bits.........................................................................................249
PFC and ETS Conguration Examples....................................................................................................................... 250
Using PFC to Manage Converged Ethernet Trac.................................................................................................. 250
Operations on Untagged Packets................................................................................................................................250
Generation of PFC for a Priority for Untagged Packets...........................................................................................250
Congure Enhanced Transmission Selection............................................................................................................. 250
ETS Prerequisites and Restrictions........................................................................................................................ 251
Creating an ETS Priority Group.............................................................................................................................. 251
ETS Operation with DCBx......................................................................................................................................252
Conguring Bandwidth Allocation for DCBx CIN.................................................................................................252
Conguring ETS in a DCB Map..............................................................................................................................253
Hierarchical Scheduling in ETS Output Policies.........................................................................................................254
Using ETS to Manage Converged Ethernet Trac...................................................................................................255
Applying DCB Policies in a Switch Stack....................................................................................................................255
Congure a DCBx Operation........................................................................................................................................255
DCBx Operation.......................................................................................................................................................256
DCBx Port Roles......................................................................................................................................................256
DCB Conguration Exchange.................................................................................................................................257
Conguration Source Election............................................................................................................................... 258
Propagation of DCB Information........................................................................................................................... 258
Auto-Detection and Manual Conguration of the DCBx Version...................................................................... 258
DCBx Example......................................................................................................................................................... 259
DCBx Prerequisites and Restrictions.....................................................................................................................259
Conguring DCBx....................................................................................................................................................260
Verifying the DCB Conguration................................................................................................................................. 263
QoS dot1p Trac Classication and Queue Assignment.......................................................................................... 272
Conguring the Dynamic Buer Method....................................................................................................................272
Sample DCB Conguration........................................................................................................................................... 273
PFC and ETS Conguration Command Examples...............................................................................................275
12 Dynamic Host Conguration Protocol (DHCP)......................................................................................... 276
DHCP Packet Format and Options..............................................................................................................................276
Assign an IP Address using DHCP............................................................................................................................... 278
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