White Papers

Table Of Contents
ETS Operation with DCBx.......................................................................................................................................236
Hierarchical Scheduling in ETS Output Policies...................................................................................................... 236
DCBx Operation...............................................................................................................................................................237
DCBx Operation.........................................................................................................................................................237
DCBx Port Roles........................................................................................................................................................237
DCB Configuration Exchange.................................................................................................................................238
Configuration Source Election............................................................................................................................... 239
Propagation of DCB Information...........................................................................................................................239
Auto-Detection of the DCBx Version...................................................................................................................239
DCBx Example........................................................................................................................................................... 240
DCBx Prerequisites and Restrictions................................................................................................................... 240
DCBx Error Messages...............................................................................................................................................241
Debugging DCBx on an Interface...........................................................................................................................241
Verifying the DCB Configuration................................................................................................................................. 241
QoS dot1p Traffic Classification and Queue Assignment......................................................................................249
Troubleshooting PFC, ETS, and DCBx Operation...................................................................................................250
Chapter 15: Dynamic Host Configuration Protocol (DHCP)........................................................ 252
Assigning an IP Address using DHCP.........................................................................................................................252
Debugging DHCP Client Operation.............................................................................................................................254
DHCP Client..................................................................................................................................................................... 255
How DHCP Client is Implemented.............................................................................................................................. 256
DHCP Client on a Management Interface................................................................................................................ 256
DHCP Client on a VLAN................................................................................................................................................ 257
DHCP Packet Format and Options.............................................................................................................................257
Option 82.......................................................................................................................................................................... 258
DHCPv6 relay agent options........................................................................................................................................258
Releasing and Renewing DHCP-based IP Addresses.............................................................................................259
Viewing DHCP Statistics and Lease Information.................................................................................................... 259
Configuring DHCP relay source interface.................................................................................................................260
Global DHCP relay source IPv4 or IPv6 configuration ....................................................................................260
Interface level DHCP relay source IPv4 or IPv6 configuration .....................................................................260
DHCP Snooping...............................................................................................................................................................262
Enabling DHCP Snooping........................................................................................................................................262
Enabling IPv6 DHCP Snooping.............................................................................................................................. 263
Adding a Static Entry in the Binding Table......................................................................................................... 263
Adding a Static IPV6 DHCP Snooping Binding Table.......................................................................................263
Clearing the Binding Table...................................................................................................................................... 263
Clearing the DHCP IPv6 Binding Table................................................................................................................264
Displaying the Contents of the Binding Table....................................................................................................264
Displaying the Contents of the DHCPv6 Binding Table.................................................................................. 264
Debugging the IPv6 DHCP..................................................................................................................................... 265
IPv6 DHCP Snooping MAC-Address Verification.....................................................................................265
Chapter 16: Equal Cost Multi-Path (ECMP)............................................................................... 266
ECMP for Flow-Based Affinity.................................................................................................................................... 266
Enabling Deterministic ECMP Next Hop............................................................................................................. 266
Link Bundle Monitoring..................................................................................................................................................266
Managing ECMP Group Paths.....................................................................................................................................267
Contents
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