Administrator Guide

Configuring CoPP for CPU Queues..........................................................................................................................229
CoPP for OSPFv3 Packets........................................................................................................................................230
Configuring CoPP for OSPFv3..................................................................................................................................232
Displaying CoPP Configuration .................................................................................................................................233
12 Dynamic Host Configuration Protocol (DHCP)...........................................................................235
DHCP Packet Format and Options.................................................................................................................................235
Assign an IP Address using DHCP.................................................................................................................................. 236
Implementation Information............................................................................................................................................. 237
Configure the System to be a DHCP Server.................................................................................................................238
Configuring the Server for Automatic Address Allocation..................................................................................... 238
Specifying a Default Gateway....................................................................................................................................239
Configure a Method of Hostname Resolution.........................................................................................................239
Using DNS for Address Resolution........................................................................................................................... 239
Using NetBIOS WINS for Address Resolution.........................................................................................................240
Creating Manual Binding Entries............................................................................................................................... 240
Debugging the DHCP Server.....................................................................................................................................240
Using DHCP Clear Commands.................................................................................................................................. 240
Configure the System to be a Relay Agent.................................................................................................................... 241
Configure the System to be a DHCP Client.................................................................................................................. 242
Configuring the DHCP Client System.......................................................................................................................242
DHCP Client on a Management Interface................................................................................................................243
DHCP Client Operation with Other Features.......................................................................................................... 244
DHCP Relay When DHCP Server and Client are in Different VRFs...........................................................................245
Configuring Route Leaking between VRFs on DHCP Relay Agent...................................................................... 245
Non-default VRF configuration for DHCPv6 helper address...................................................................................... 246
Configuring DHCP relay source interface......................................................................................................................246
Global DHCP relay source IPv4 or IPv6 configuration .......................................................................................... 246
Interface level DHCP relay source IPv4 or IPv6 configuration .............................................................................247
Configure the System for User Port Stacking (Option 230)...................................................................................... 248
Configure Secure DHCP.................................................................................................................................................. 248
Option 82 (DHCPv4 relay options)...........................................................................................................................248
DHCPv6 relay agent options......................................................................................................................................249
DHCP Snooping...........................................................................................................................................................249
Drop DHCP Packets on Snooped VLANs Only....................................................................................................... 253
Dynamic ARP Inspection............................................................................................................................................ 254
Configuring Dynamic ARP Inspection.......................................................................................................................254
Source Address Validation............................................................................................................................................... 255
Enabling IP Source Address Validation..................................................................................................................... 255
DHCP MAC Source Address Validation................................................................................................................... 256
Enabling IP+MAC Source Address Validation..........................................................................................................256
Viewing the Number of SAV Dropped Packets.......................................................................................................257
Clearing the Number of SAV Dropped Packets...................................................................................................... 257
13 Equal Cost Multi-Path (ECMP).................................................................................................258
ECMP for Flow-Based Affinity........................................................................................................................................258
Configuring the Hash Algorithm................................................................................................................................258
Enabling Deterministic ECMP Next Hop..................................................................................................................258
Configuring the Hash Algorithm Seed...................................................................................................................... 258
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