Users Guide

13 Dynamic Host Conguration Protocol (DHCP).........................................................................................285
DHCP Packet Format and Options............................................................................................................................. 285
Assign an IP Address using DHCP............................................................................................................................... 287
Implementation Information..........................................................................................................................................288
Congure the System to be a DHCP Server..............................................................................................................288
Conguring the Server for Automatic Address Allocation..................................................................................289
Specifying a Default Gateway................................................................................................................................290
Congure a Method of Hostname Resolution..................................................................................................... 290
Using DNS for Address Resolution........................................................................................................................290
Using NetBIOS WINS for Address Resolution...................................................................................................... 291
Creating Manual Binding Entries............................................................................................................................ 291
Debugging the DHCP Server..................................................................................................................................291
Using DHCP Clear Commands...............................................................................................................................292
Congure the System to be a Relay Agent................................................................................................................ 292
Congure the System to be a DHCP Client............................................................................................................... 294
Conguring the DHCP Client System...................................................................................................................294
DHCP Client on a Management Interface............................................................................................................296
DHCP Client Operation with Other Features.......................................................................................................296
Congure the System for User Port Stacking (Option 230)....................................................................................297
Congure Secure DHCP............................................................................................................................................... 297
Option 82..................................................................................................................................................................298
DHCP Snooping.......................................................................................................................................................298
Drop DHCP Packets on Snooped VLANs Only.................................................................................................... 301
Dynamic ARP Inspection.........................................................................................................................................302
Conguring Dynamic ARP Inspection................................................................................................................... 303
Source Address Validation............................................................................................................................................ 304
Enabling IP Source Address Validation..................................................................................................................304
DHCP MAC Source Address Validation................................................................................................................ 305
Enabling IP+MAC Source Address Validation.......................................................................................................305
Viewing the Number of SAV Dropped Packets................................................................................................... 306
Clearing the Number of SAV Dropped Packets...................................................................................................306
14 Equal Cost Multi-Path (ECMP)................................................................................................................ 307
ECMP for Flow-Based Anity..................................................................................................................................... 307
Conguring the Hash Algorithm.............................................................................................................................307
Enabling Deterministic ECMP Next Hop...............................................................................................................307
Conguring the Hash Algorithm Seed.................................................................................................................. 308
Link Bundle Monitoring................................................................................................................................................. 308
Managing ECMP Group Paths...............................................................................................................................309
Creating an ECMP Group Bundle..........................................................................................................................309
Modifying the ECMP Group Threshold................................................................................................................ 309
RTAG7..............................................................................................................................................................................310
Flow-based Hashing for ECMP.....................................................................................................................................311
15 FIP Snooping............................................................................................................................................ 314
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