Users Guide

Conguring DCBx.................................................................................................................................................... 265
Verifying the DCB Conguration.................................................................................................................................... 269
Sample DCB Conguration.............................................................................................................................................278
PFC and ETS Conguration Command Examples.................................................................................................... 280
QoS dot1p Trac Classication and Queue Assignment.................................................................................................280
Conguring the Dynamic Buer Method.........................................................................................................................281
15 Dynamic Host Conguration Protocol (DHCP).......................................................... 283
DHCP Packet Format and Options.................................................................................................................................283
Assign an IP Address using DHCP..................................................................................................................................284
Implementation Information............................................................................................................................................285
Conguration Tasks........................................................................................................................................................286
Congure the System to be a DHCP Server.................................................................................................................. 286
Conguration Tasks..................................................................................................................................................286
Conguring the Server for Automatic Address Allocation......................................................................................... 287
Specifying a Default Gateway.................................................................................................................................. 288
Enabling the DHCP Server.......................................................................................................................................288
Congure a Method of Hostname Resolution.......................................................................................................... 288
Creating Manual Binding Entries.............................................................................................................................. 289
Debugging the DHCP Server................................................................................................................................... 289
Using DHCP Clear Commands.................................................................................................................................290
Congure the System to be a Relay Agent.....................................................................................................................290
Congure the System for User Port Stacking................................................................................................................ 292
Congure Secure DHCP.................................................................................................................................................292
Option 82.................................................................................................................................................................292
DHCP Snooping....................................................................................................................................................... 292
Drop DHCP Packets on Snooped VLANs Only.........................................................................................................294
Dynamic ARP Inspection..........................................................................................................................................294
Source Address Validation........................................................................................................................................296
Viewing the Number of SAV Dropped Packets...............................................................................................................298
Clearing the Number of SAV Dropped Packets.............................................................................................................. 298
16 Equal Cost Multi-Path (ECMP)................................................................................. 299
ECMP for Flow-Based Anity....................................................................................................................................... 299
Conguring the Hash Algorithm.....................................................................................................................................299
Enabling Deterministic ECMP Next Hop........................................................................................................................ 299
Conguring the Hash Algorithm Seed............................................................................................................................300
Link Bundle Monitoring.................................................................................................................................................. 300
Managing ECMP Group Paths........................................................................................................................................301
Creating an ECMP Group Bundle....................................................................................................................................301
Modifying the ECMP Group Threshold........................................................................................................................... 301
17 Fabric Services.......................................................................................................... 303
Conguring Switch Mode to Fabric Services................................................................................................................. 304
Name Server..................................................................................................................................................................304
Link State Database....................................................................................................................................................... 305
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