Administrator Guide

Configuring CoPP for CPU Queues...................................................................................................................... 237
CoPP for OSPFv3 Packets.....................................................................................................................................238
Configuring CoPP for OSPFv3............................................................................................................................... 241
Displaying CoPP Configuration .............................................................................................................................242
Chapter 12: Dynamic Host Configuration Protocol (DHCP)........................................................ 244
DHCP Packet Format and Options.............................................................................................................................244
Assign an IP Address using DHCP.............................................................................................................................. 246
Implementation Information..........................................................................................................................................246
Configure the System to be a DHCP Server............................................................................................................247
Configuring the Server for Automatic Address Allocation.............................................................................. 247
Specifying a Default Gateway................................................................................................................................248
Configure a Method of Hostname Resolution....................................................................................................249
Using DNS for Address Resolution....................................................................................................................... 249
Using NetBIOS WINS for Address Resolution....................................................................................................249
Creating Manual Binding Entries........................................................................................................................... 249
Debugging the DHCP Server................................................................................................................................. 250
Using DHCP Clear Commands...............................................................................................................................250
Configure the System to be a Relay Agent..............................................................................................................250
Configure the System to be a DHCP Client............................................................................................................. 252
Configuring the DHCP Client System.................................................................................................................. 252
DHCP Client on a Management Interface...........................................................................................................253
DHCP Client Operation with Other Features.....................................................................................................254
DHCP Relay When DHCP Server and Client are in Different VRFs................................................................... 255
Configuring Route Leaking between VRFs on DHCP Relay Agent...............................................................255
Non-default VRF configuration for DHCPv6 helper address...............................................................................256
Configuring DHCP relay source interface.................................................................................................................256
Global DHCP relay source IPv4 or IPv6 configuration ....................................................................................256
Interface level DHCP relay source IPv4 or IPv6 configuration .....................................................................257
Configure the System for User Port Stacking (Option 230)............................................................................... 258
Configure Secure DHCP............................................................................................................................................... 258
Option 82 (DHCPv4 relay options).......................................................................................................................258
DHCPv6 relay agent options..................................................................................................................................259
DHCP Snooping.........................................................................................................................................................259
Drop DHCP Packets on Snooped VLANs Only.................................................................................................. 264
Dynamic ARP Inspection......................................................................................................................................... 264
Configuring Dynamic ARP Inspection...................................................................................................................264
Source Address Validation............................................................................................................................................266
Enabling IP Source Address Validation................................................................................................................ 266
DHCP MAC Source Address Validation...............................................................................................................266
Enabling IP+MAC Source Address Validation.....................................................................................................267
Viewing the Number of SAV Dropped Packets..................................................................................................267
Clearing the Number of SAV Dropped Packets.................................................................................................268
Chapter 13: Equal Cost Multi-Path (ECMP)............................................................................... 269
ECMP for Flow-Based Affinity.................................................................................................................................... 269
Configuring the Hash Algorithm............................................................................................................................ 269
Enabling Deterministic ECMP Next Hop............................................................................................................. 269
Configuring the Hash Algorithm Seed..................................................................................................................270
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