Administrator Guide

Configuring DCBx........................................................................................................................................................262
Verifying the DCB Configuration.....................................................................................................................................265
QoS dot1p Traffic Classification and Queue Assignment.............................................................................................273
Configuring the Dynamic Buffer Method.......................................................................................................................274
Sample DCB Configuration.............................................................................................................................................. 275
13 Dynamic Host Configuration Protocol (DHCP)........................................................................... 278
DHCP Packet Format and Options.................................................................................................................................278
Assign an IP Address using DHCP...................................................................................................................................279
Implementation Information.............................................................................................................................................280
Configure the System to be a DHCP Server..................................................................................................................281
Configuring the Server for Automatic Address Allocation......................................................................................281
Specifying a Default Gateway....................................................................................................................................282
Configure a Method of Hostname Resolution.........................................................................................................282
Using DNS for Address Resolution............................................................................................................................282
Using NetBIOS WINS for Address Resolution.........................................................................................................283
Creating Manual Binding Entries............................................................................................................................... 283
Debugging the DHCP Server.....................................................................................................................................283
Using DHCP Clear Commands.................................................................................................................................. 283
Configure the System to be a Relay Agent................................................................................................................... 284
Configure the System to be a DHCP Client.................................................................................................................. 285
Configuring the DHCP Client System.......................................................................................................................285
DHCP Client on a Management Interface............................................................................................................... 286
DHCP Client Operation with Other Features.......................................................................................................... 287
DHCP Relay When DHCP Server and Client are in Different VRFs...........................................................................288
Configuring Route Leaking between VRFs on DHCP Relay Agent...................................................................... 288
Non-default VRF configuration for DHCPv6 helper address...................................................................................... 289
Configuring DHCP relay source interface......................................................................................................................289
Global DHCP relay source IPv4 or IPv6 configuration .......................................................................................... 289
Interface level DHCP relay source IPv4 or IPv6 configuration .............................................................................290
Configure the System for User Port Stacking (Option 230)....................................................................................... 291
Configure Secure DHCP................................................................................................................................................... 291
Option 82 (DHCPv4 relay options)............................................................................................................................291
DHCPv6 relay agent options......................................................................................................................................292
DHCP Snooping...........................................................................................................................................................292
Drop DHCP Packets on Snooped VLANs Only....................................................................................................... 296
Dynamic ARP Inspection............................................................................................................................................ 297
Configuring Dynamic ARP Inspection....................................................................................................................... 297
Source Address Validation............................................................................................................................................... 298
Enabling IP Source Address Validation..................................................................................................................... 298
DHCP MAC Source Address Validation................................................................................................................... 299
Enabling IP+MAC Source Address Validation..........................................................................................................299
Viewing the Number of SAV Dropped Packets.......................................................................................................300
Clearing the Number of SAV Dropped Packets...................................................................................................... 300
14 Equal Cost Multi-Path (ECMP)................................................................................................. 301
ECMP for Flow-Based Affinity.........................................................................................................................................301
Configuring the Hash Algorithm.................................................................................................................................301
Enabling Deterministic ECMP Next Hop...................................................................................................................301
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