Users Guide

Configuring DCBx......................................................................................................................................................277
Verifying the DCB Configuration.................................................................................................................................280
QoS dot1p Traffic Classification and Queue Assignment......................................................................................289
Configuring the Dynamic Buffer Method..................................................................................................................290
Sample DCB Configuration...........................................................................................................................................290
Chapter 13: Dynamic Host Configuration Protocol (DHCP)........................................................ 293
DHCP Packet Format and Options.............................................................................................................................293
Assign an IP Address using DHCP.............................................................................................................................. 295
Implementation Information......................................................................................................................................... 295
Configure the System to be a DHCP Server........................................................................................................... 296
Configuring the Server for Automatic Address Allocation..............................................................................296
Specifying a Default Gateway................................................................................................................................297
Configure a Method of Hostname Resolution....................................................................................................298
Using DNS for Address Resolution....................................................................................................................... 298
Using NetBIOS WINS for Address Resolution....................................................................................................298
Creating Manual Binding Entries........................................................................................................................... 298
Debugging the DHCP Server................................................................................................................................. 299
Using DHCP Clear Commands...............................................................................................................................299
Configure the System to be a Relay Agent.............................................................................................................. 299
Configure the System to be a DHCP Client..............................................................................................................301
Configuring the DHCP Client System...................................................................................................................301
DHCP Client on a Management Interface...........................................................................................................302
DHCP Client Operation with Other Features.....................................................................................................303
DHCP Relay When DHCP Server and Client are in Different VRFs................................................................... 304
Configuring Route Leaking between VRFs on DHCP Relay Agent...............................................................304
Non-default VRF configuration for DHCPv6 helper address...............................................................................305
Configuring DHCP relay source interface.................................................................................................................305
Global DHCP relay source IPv4 or IPv6 configuration ....................................................................................305
Interface level DHCP relay source IPv4 or IPv6 configuration .....................................................................306
Configure the System for User Port Stacking (Option 230)............................................................................... 307
Configure Secure DHCP................................................................................................................................................307
Option 82 (DHCPv4 relay options).......................................................................................................................307
DHCPv6 relay agent options..................................................................................................................................308
DHCP Snooping.........................................................................................................................................................308
Drop DHCP Packets on Snooped VLANs Only................................................................................................... 313
Dynamic ARP Inspection.......................................................................................................................................... 313
Configuring Dynamic ARP Inspection................................................................................................................... 313
Source Address Validation.............................................................................................................................................315
Enabling IP Source Address Validation................................................................................................................. 315
DHCP MAC Source Address Validation................................................................................................................315
Enabling IP+MAC Source Address Validation..................................................................................................... 316
Viewing the Number of SAV Dropped Packets.................................................................................................. 316
Clearing the Number of SAV Dropped Packets..................................................................................................317
Chapter 14: Equal Cost Multi-Path (ECMP)................................................................................318
ECMP for Flow-Based Affinity..................................................................................................................................... 318
Configuring the Hash Algorithm............................................................................................................................. 318
Enabling Deterministic ECMP Next Hop.............................................................................................................. 318
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