Reference Guide
PFC Prerequisites and Restrictions.............................................................................................281
ETS Configuration Notes............................................................................................................ 281
ETS Prerequisites and Restrictions............................................................................................. 282
Configuring Priority-Based Flow Control........................................................................................283
Configuring Lossless Queues.....................................................................................................284
Configure Enhanced Transmission Selection................................................................................. 284
ETS Prerequisites and Restrictions............................................................................................. 285
Creating an ETS Priority Group.................................................................................................. 285
ETS Operation with DCBx.......................................................................................................... 286
Configuring Bandwidth Allocation for DCBx CIN......................................................................287
Applying DCB Policies in a Switch Stack..........................................................................................287
Configure a DCBx Operation...........................................................................................................288
DCBx Operation..........................................................................................................................288
DCBx Port Roles..........................................................................................................................288
DCB Configuration Exchange.................................................................................................... 290
Configuration Source Election...................................................................................................290
Propagation of DCB Information................................................................................................291
Auto-Detection and Manual Configuration of the DCBx Version.............................................291
Behavior of Tagged Packets....................................................................................................... 292
Configuration Example for DSCP and PFC Priorities.................................................................292
DCBx Example.............................................................................................................................293
DCBx Prerequisites and Restrictions..........................................................................................294
Configuring DCBx.......................................................................................................................294
Verifying the DCB Configuration..................................................................................................... 298
Using PFC and ETS to Manage Data Center Traffic........................................................................ 309
PFC and ETS Configuration Command Examples..................................................................... 311
Using PFC and ETS to Manage Converged Ethernet Traffic......................................................311
Hierarchical Scheduling in ETS Output Policies......................................................................... 311
Priority-Based Flow Control Using Dynamic Buffer Method.......................................................... 312
Pause and Resume of Traffic...................................................................................................... 312
Buffer Sizes for Lossless or PFC Packets.................................................................................... 313
Configuring the Dynamic Buffer Method.........................................................................................313
Sample Configurations......................................................................................................................315
......................................................................................................................................................315
15 Dynamic Host Configuration Protocol (DHCP)........................................ 319
DHCP Packet Format and Options...................................................................................................319
Assign an IP Address using DHCP.....................................................................................................321
Implementation Information............................................................................................................322
Configuration Tasks..........................................................................................................................322
Configure the System to be a DHCP Server.................................................................................... 323
Configuration Tasks.................................................................................................................... 323