Users Guide

Congure Control Plane Policing................................................................................................................................. 248
Conguring CoPP for Protocols............................................................................................................................ 249
Conguring CoPP for CPU Queues....................................................................................................................... 251
CoPP for OSPFv3 Packets.....................................................................................................................................252
Conguring CoPP for OSPFv3..............................................................................................................................255
Displaying CoPP Conguration .............................................................................................................................255
12 Dynamic Host Conguration Protocol (DHCP).........................................................................................258
DHCP Packet Format and Options............................................................................................................................. 258
Assign an IP Address using DHCP...............................................................................................................................260
Implementation Information.......................................................................................................................................... 261
Congure the System to be a DHCP Server.............................................................................................................. 261
Conguring the Server for Automatic Address Allocation..................................................................................262
Specifying a Default Gateway................................................................................................................................ 263
Congure a Method of Hostname Resolution..................................................................................................... 264
Using DNS for Address Resolution........................................................................................................................264
Using NetBIOS WINS for Address Resolution..................................................................................................... 264
Creating Manual Binding Entries............................................................................................................................264
Debugging the DHCP Server.................................................................................................................................265
Using DHCP Clear Commands.............................................................................................................................. 265
Congure the System to be a Relay Agent................................................................................................................ 265
Congure the System to be a DHCP Client............................................................................................................... 267
Conguring the DHCP Client System................................................................................................................... 267
DHCP Client on a Management Interface............................................................................................................268
DHCP Client Operation with Other Features.......................................................................................................269
DHCP Relay When DHCP Server and Client are in Dierent VRFs........................................................................ 270
Conguring Route Leaking between VRFs on DHCP Relay Agent................................................................... 270
Congure the System for User Port Stacking (Option 230).....................................................................................271
Congure Secure DHCP................................................................................................................................................271
Option 82.................................................................................................................................................................. 272
DHCP Snooping....................................................................................................................................................... 272
Drop DHCP Packets on Snooped VLANs Only.................................................................................................... 277
Dynamic ARP Inspection.........................................................................................................................................277
Conguring Dynamic ARP Inspection....................................................................................................................278
Source Address Validation.............................................................................................................................................279
Enabling IP Source Address Validation.................................................................................................................. 279
DHCP MAC Source Address Validation................................................................................................................ 280
Enabling IP+MAC Source Address Validation.......................................................................................................280
Viewing the Number of SAV Dropped Packets.................................................................................................... 281
Clearing the Number of SAV Dropped Packets....................................................................................................281
13 Equal Cost Multi-Path (ECMP)................................................................................................................ 282
ECMP for Flow-Based Anity.....................................................................................................................................282
Conguring the Hash Algorithm............................................................................................................................ 282
Enabling Deterministic ECMP Next Hop.............................................................................................................. 282
Conguring the Hash Algorithm Seed.................................................................................................................. 283
Contents
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