White Papers

Table Of Contents
Configuring DCBx......................................................................................................................................................274
Verifying the DCB Configuration.................................................................................................................................278
QoS dot1p Traffic Classification and Queue Assignment......................................................................................286
Configuring the Dynamic Buffer Method.................................................................................................................. 287
Sample DCB Configuration...........................................................................................................................................288
Chapter 13: Dynamic Host Configuration Protocol (DHCP).........................................................291
DHCP Packet Format and Options..............................................................................................................................291
Assign an IP Address using DHCP.............................................................................................................................. 293
Implementation Information......................................................................................................................................... 293
Configure the System to be a DHCP Server............................................................................................................294
Configuring the Server for Automatic Address Allocation..............................................................................294
Specifying a Default Gateway................................................................................................................................295
Configure a Method of Hostname Resolution....................................................................................................296
Using DNS for Address Resolution....................................................................................................................... 296
Using NetBIOS WINS for Address Resolution................................................................................................... 296
Creating Manual Binding Entries........................................................................................................................... 296
Debugging the DHCP Server..................................................................................................................................297
Using DHCP Clear Commands............................................................................................................................... 297
Configure the System to be a Relay Agent.............................................................................................................. 297
Configure the System to be a DHCP Client............................................................................................................. 299
Configuring the DHCP Client System.................................................................................................................. 299
DHCP Client on a Management Interface.......................................................................................................... 300
DHCP Client Operation with Other Features......................................................................................................301
DHCP Relay When DHCP Server and Client are in Different VRFs................................................................... 302
Configuring Route Leaking between VRFs on DHCP Relay Agent...............................................................302
Non-default VRF configuration for DHCPv6 helper address...............................................................................303
Configuring DHCP relay source interface.................................................................................................................303
Global DHCP relay source IPv4 or IPv6 configuration ....................................................................................303
Interface level DHCP relay source IPv4 or IPv6 configuration .....................................................................304
Configure the System for User Port Stacking (Option 230)............................................................................... 305
Configure Secure DHCP............................................................................................................................................... 305
Option 82 (DHCPv4 relay options).......................................................................................................................305
DHCPv6 relay agent options..................................................................................................................................306
DHCP Snooping.........................................................................................................................................................306
Drop DHCP Packets on Snooped VLANs Only....................................................................................................311
Dynamic ARP Inspection...........................................................................................................................................311
Configuring Dynamic ARP Inspection.................................................................................................................... 311
Source Address Validation.............................................................................................................................................313
Enabling IP Source Address Validation................................................................................................................. 313
DHCP MAC Source Address Validation................................................................................................................313
Enabling IP+MAC Source Address Validation..................................................................................................... 314
Viewing the Number of SAV Dropped Packets.................................................................................................. 314
Clearing the Number of SAV Dropped Packets................................................................................................. 315
Chapter 14: Equal Cost Multi-Path (ECMP)................................................................................316
ECMP for Flow-Based Affinity.....................................................................................................................................316
Configuring the Hash Algorithm.............................................................................................................................316
Enabling Deterministic ECMP Next Hop.............................................................................................................. 316
Contents
9