Users Guide

Configuring the Dynamic Buffer Method................................................................................................................... 277
Sample DCB Configuration...........................................................................................................................................278
PFC and ETS Configuration Command Examples.............................................................................................. 280
13 Dynamic Host Configuration Protocol (DHCP)......................................................................................... 281
DHCP Packet Format and Options..............................................................................................................................281
Assign an IP Address using DHCP...............................................................................................................................283
Implementation Information......................................................................................................................................... 284
Configure the System to be a DHCP Server............................................................................................................. 284
Configuring the Server for Automatic Address Allocation................................................................................. 285
Specifying a Default Gateway................................................................................................................................286
Configure a Method of Hostname Resolution..................................................................................................... 286
Using DNS for Address Resolution........................................................................................................................286
Using NetBIOS WINS for Address Resolution..................................................................................................... 287
Creating Manual Binding Entries............................................................................................................................287
Debugging the DHCP Server................................................................................................................................. 287
Using DHCP Clear Commands.............................................................................................................................. 288
Configure the System to be a DHCP Client...............................................................................................................288
Configuring the DHCP Client System...................................................................................................................288
DHCP Client on a Management Interface............................................................................................................290
DHCP Client Operation with Other Features...................................................................................................... 290
Configure the System for User Port Stacking (Option 230)................................................................................... 291
Configure Secure DHCP............................................................................................................................................... 291
Option 82..................................................................................................................................................................292
DHCP Snooping.......................................................................................................................................................292
Configuring the DHCP secondary-subnet............................................................................................................296
Drop DHCP Packets on Snooped VLANs Only................................................................................................... 296
Dynamic ARP Inspection.........................................................................................................................................297
Configuring Dynamic ARP Inspection................................................................................................................... 298
Source Address Validation............................................................................................................................................299
Enabling IP Source Address Validation................................................................................................................. 299
DHCP MAC Source Address Validation............................................................................................................... 300
Enabling IP+MAC Source Address Validation......................................................................................................300
Viewing the Number of SAV Dropped Packets....................................................................................................301
Clearing the Number of SAV Dropped Packets................................................................................................... 301
14 Equal Cost Multi-Path (ECMP)................................................................................................................302
ECMP for Flow-Based Affinity.................................................................................................................................... 302
Configuring the Hash Algorithm............................................................................................................................ 302
Enabling Deterministic ECMP Next Hop.............................................................................................................. 302
Configuring the Hash Algorithm Seed.................................................................................................................. 303
Link Bundle Monitoring................................................................................................................................................. 303
Managing ECMP Group Paths.............................................................................................................................. 304
Creating an ECMP Group Bundle..........................................................................................................................304
Modifying the ECMP Group Threshold................................................................................................................ 304
Support for /128 IPv6 and /32 IPv4 Prefixes in Layer 3 Host Table and LPM Table....................................305
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