Users Guide

15 Dynamic Host Configuration Protocol (DHCP)............................................................350
DHCP Packet Format and Options.................................................................................... 350
Assign an IP Address using DHCP.......................................................................................352
Implementation Information............................................................................................... 353
Configuration Tasks...............................................................................................................354
Configure the System to be a DHCP Server.....................................................................354
Configuration Tasks.........................................................................................................355
Configuring the Server for Automatic Address Allocation...................................... 355
Specifying a Default Gateway........................................................................................356
Enabling the DHCP Server..............................................................................................357
Configure a Method of Hostname Resolution...........................................................357
Creating Manual Binding Entries...................................................................................358
Debugging the DHCP Server......................................................................................... 359
Using DHCP Clear Commands..................................................................................... 359
Configure the System to be a Relay Agent...................................................................... 360
Configure the System for User Port Stacking.................................................................. 362
Configure Secure DHCP.......................................................................................................362
Option 82...........................................................................................................................362
DHCP Snooping............................................................................................................... 363
Drop DHCP Packets on Snooped VLANs Only..........................................................365
Dynamic ARP Inspection................................................................................................ 365
Source Address Validation..............................................................................................367
Viewing the Number of SAV Dropped Packets................................................................369
Clearing the Number of SAV Dropped Packets...............................................................370
16 Equal Cost Multi-Path (ECMP)..........................................................................................371
ECMP for Flow-Based Affinity..............................................................................................371
Configuring the Hash Algorithm......................................................................................... 371
Enabling Deterministic ECMP Next Hop............................................................................371
Configuring the Hash Algorithm Seed...............................................................................372
Link Bundle Monitoring.........................................................................................................372
Managing ECMP Group Paths............................................................................................. 373
Creating an ECMP Group Bundle....................................................................................... 374
Modifying the ECMP Group Threshold............................................................................. 374
17 Fabric Services.....................................................................................................................376
Configuring Switch Mode to Fabric Services....................................................................377
Name Server............................................................................................................................378
Link State Database................................................................................................................379
Inter Switch Link (ISL)...................................................................................................... 379
Principal Switch Selection and Domain ID Assignment...........................................379
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