Administrator Guide

Configuring CoPP for Protocols................................................................................................................................224
Configuring CoPP for CPU Queues..........................................................................................................................225
CoPP for OSPFv3 Packets........................................................................................................................................226
Configuring CoPP for OSPFv3..................................................................................................................................228
Displaying CoPP Configuration .................................................................................................................................229
12 Dynamic Host Configuration Protocol (DHCP)........................................................................... 231
DHCP Packet Format and Options..................................................................................................................................231
Assign an IP Address using DHCP.................................................................................................................................. 232
Implementation Information............................................................................................................................................. 233
Configure the System to be a DHCP Server.................................................................................................................234
Configuring the Server for Automatic Address Allocation..................................................................................... 234
Specifying a Default Gateway................................................................................................................................... 235
Configure a Method of Hostname Resolution.........................................................................................................235
Using DNS for Address Resolution........................................................................................................................... 235
Using NetBIOS WINS for Address Resolution.........................................................................................................236
Creating Manual Binding Entries............................................................................................................................... 236
Debugging the DHCP Server.....................................................................................................................................236
Using DHCP Clear Commands.................................................................................................................................. 236
Configure the System to be a Relay Agent....................................................................................................................237
Configure the System to be a DHCP Client.................................................................................................................. 238
Configuring the DHCP Client System.......................................................................................................................238
DHCP Client on a Management Interface................................................................................................................239
DHCP Client Operation with Other Features.......................................................................................................... 240
DHCP Relay When DHCP Server and Client are in Different VRFs............................................................................241
Configuring Route Leaking between VRFs on DHCP Relay Agent....................................................................... 241
Non-default VRF configuration for DHCPv6 helper address...................................................................................... 242
Configuring DHCP relay source interface...................................................................................................................... 242
Global DHCP relay source IPv4 or IPv6 configuration ...........................................................................................242
Interface level DHCP relay source IPv4 or IPv6 configuration .............................................................................243
Configure the System for User Port Stacking (Option 230)...................................................................................... 244
Configure Secure DHCP.................................................................................................................................................. 244
Option 82 (DHCPv4 relay options)........................................................................................................................... 244
DHCPv6 relay agent options..................................................................................................................................... 245
DHCP Snooping...........................................................................................................................................................245
Drop DHCP Packets on Snooped VLANs Only....................................................................................................... 249
Dynamic ARP Inspection............................................................................................................................................ 250
Configuring Dynamic ARP Inspection.......................................................................................................................250
Source Address Validation................................................................................................................................................ 251
Enabling IP Source Address Validation......................................................................................................................251
DHCP MAC Source Address Validation................................................................................................................... 252
Enabling IP+MAC Source Address Validation..........................................................................................................252
Viewing the Number of SAV Dropped Packets.......................................................................................................253
Clearing the Number of SAV Dropped Packets...................................................................................................... 253
13 Equal Cost Multi-Path (ECMP).................................................................................................254
ECMP for Flow-Based Affinity........................................................................................................................................254
Configuring the Hash Algorithm................................................................................................................................ 254
Enabling Deterministic ECMP Next Hop..................................................................................................................254
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