Administrator Guide

Configuring CoPP for Protocols............................................................................................................................232
Configuring CoPP for CPU Queues......................................................................................................................233
CoPP for OSPFv3 Packets.....................................................................................................................................234
Configuring CoPP for OSPFv3.............................................................................................................................. 237
Displaying CoPP Configuration .............................................................................................................................238
Chapter 12: Dynamic Host Configuration Protocol (DHCP)........................................................ 240
DHCP Packet Format and Options.............................................................................................................................240
Assign an IP Address using DHCP.............................................................................................................................. 242
Implementation Information..........................................................................................................................................242
Configure the System to be a DHCP Server............................................................................................................243
Configuring the Server for Automatic Address Allocation.............................................................................. 243
Specifying a Default Gateway................................................................................................................................244
Configure a Method of Hostname Resolution....................................................................................................245
Using DNS for Address Resolution....................................................................................................................... 245
Using NetBIOS WINS for Address Resolution....................................................................................................245
Creating Manual Binding Entries........................................................................................................................... 245
Debugging the DHCP Server..................................................................................................................................246
Using DHCP Clear Commands...............................................................................................................................246
Configure the System to be a Relay Agent.............................................................................................................. 246
Configure the System to be a DHCP Client............................................................................................................. 248
Configuring the DHCP Client System.................................................................................................................. 248
DHCP Client on a Management Interface...........................................................................................................249
DHCP Client Operation with Other Features.....................................................................................................250
DHCP Relay When DHCP Server and Client are in Different VRFs.................................................................... 251
Configuring Route Leaking between VRFs on DHCP Relay Agent................................................................251
Non-default VRF configuration for DHCPv6 helper address...............................................................................252
Configuring DHCP relay source interface.................................................................................................................252
Global DHCP relay source IPv4 or IPv6 configuration ....................................................................................252
Interface level DHCP relay source IPv4 or IPv6 configuration .....................................................................253
Configure the System for User Port Stacking (Option 230)............................................................................... 254
Configure Secure DHCP................................................................................................................................................254
Option 82 (DHCPv4 relay options).......................................................................................................................254
DHCPv6 relay agent options..................................................................................................................................255
DHCP Snooping.........................................................................................................................................................255
Drop DHCP Packets on Snooped VLANs Only.................................................................................................. 260
Dynamic ARP Inspection......................................................................................................................................... 260
Configuring Dynamic ARP Inspection.................................................................................................................. 260
Source Address Validation............................................................................................................................................ 262
Enabling IP Source Address Validation................................................................................................................ 262
DHCP MAC Source Address Validation............................................................................................................... 262
Enabling IP+MAC Source Address Validation.................................................................................................... 263
Viewing the Number of SAV Dropped Packets................................................................................................. 263
Clearing the Number of SAV Dropped Packets.................................................................................................264
Chapter 13: Equal Cost Multi-Path (ECMP)............................................................................... 265
ECMP for Flow-Based Affinity.................................................................................................................................... 265
Configuring the Hash Algorithm............................................................................................................................265
Enabling Deterministic ECMP Next Hop............................................................................................................. 265
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