Reference Guide
Configuring Priority-Based Flow Control.....................................................................................31
Enhanced Transmission Selection......................................................................................................34
Configuring Enhanced Transmission Selection........................................................................... 35
Configuring DCB Maps and its Attributes.......................................................................................... 36
DCB Map: Configuration Procedure............................................................................................ 36
Important Points to Remember....................................................................................................37
Applying a DCB Map on a Port......................................................................................................37
Configuring PFC without a DCB Map...........................................................................................38
Configuring Lossless Queues....................................................................................................... 38
Data Center Bridging Exchange Protocol (DCBx)............................................................................. 39
Data Center Bridging in a Traffic Flow...............................................................................................40
Enabling Data Center Bridging...........................................................................................................40
Data Center Bridging: Auto-DCB-Enable Mode................................................................................41
QoS dot1p Traffic Classification and Queue Assignment................................................................. 43
How Priority-Based Flow Control is Implemented........................................................................... 44
How Enhanced Transmission Selection is Implemented..................................................................44
ETS Operation with DCBx.............................................................................................................45
Bandwidth Allocation for DCBX CIN............................................................................................46
DCBX Operation..................................................................................................................................46
DCBx Operation............................................................................................................................ 46
DCBx Port Roles............................................................................................................................ 47
DCB Configuration Exchange...................................................................................................... 48
Configuration Source Election..................................................................................................... 48
Propagation of DCB Information................................................................................................. 49
Auto-Detection of the DCBx Version...........................................................................................49
DCBX Example.............................................................................................................................. 50
DCBX Prerequisites and Restrictions............................................................................................ 51
DCBX Error Messages....................................................................................................................51
Debugging DCBX on an Interface.................................................................................................51
Verifying the DCB Configuration........................................................................................................52
Hierarchical Scheduling in ETS Output Policies.................................................................................61
5 Dynamic Host Configuration Protocol (DHCP).............................................. 63
Assigning an IP Address using DHCP................................................................................................. 63
Debugging DHCP Client Operation...................................................................................................64
DHCP Client........................................................................................................................................ 66
How DHCP Client is Implemented.....................................................................................................67
DHCP Client on a Management Interface......................................................................................... 67
DHCP Client on a VLAN......................................................................................................................68
DHCP Packet Format and Options.................................................................................................... 68
Option 82............................................................................................................................................ 70
Releasing and Renewing DHCP-based IP Addresses........................................................................ 70