Users Guide

Applying DCB Policies in a Switch Stack........................................................................................................................ 260
Congure a DCBx Operation..........................................................................................................................................260
DCBx Operation.......................................................................................................................................................260
DCBx Port Roles...................................................................................................................................................... 260
DCB Conguration Exchange...................................................................................................................................262
Conguration Source Election..................................................................................................................................262
Propagation of DCB Information.............................................................................................................................. 263
Auto-Detection and Manual Conguration of the DCBx Version.............................................................................. 263
DCBx Example......................................................................................................................................................... 263
DCBx Prerequisites and Restrictions........................................................................................................................ 264
Conguring DCBx.................................................................................................................................................... 264
Verifying the DCB Conguration.................................................................................................................................... 268
Sample DCB Conguration............................................................................................................................................. 277
PFC and ETS Conguration Command Examples.....................................................................................................279
QoS dot1p Trac Classication and Queue Assignment.................................................................................................279
Conguring the Dynamic Buer Method........................................................................................................................280
14 Dynamic Host Conguration Protocol (DHCP).......................................................... 282
DHCP Packet Format and Options.................................................................................................................................282
Assign an IP Address using DHCP.................................................................................................................................. 284
Implementation Information............................................................................................................................................284
Congure the System to be a DHCP Server.................................................................................................................. 285
Conguring the Server for Automatic Address Allocation.........................................................................................285
Specifying a Default Gateway...................................................................................................................................287
Congure a Method of Hostname Resolution...........................................................................................................287
Using DNS for Address Resolution........................................................................................................................... 287
Using NetBIOS WINS for Address Resolution...........................................................................................................287
Creating Manual Binding Entries...............................................................................................................................287
Debugging the DHCP Server................................................................................................................................... 288
Using DHCP Clear Commands................................................................................................................................. 288
Congure the System to be a Relay Agent.....................................................................................................................288
Congure the System to be a DHCP Client....................................................................................................................290
DHCP Client Operation with Other Features............................................................................................................290
DHCP Client on a Management Interface................................................................................................................. 291
Congure the System for User Port Stacking (Option 230)............................................................................................291
Congure Secure DHCP.................................................................................................................................................292
Option 82.................................................................................................................................................................292
DHCP Snooping....................................................................................................................................................... 292
Drop DHCP Packets on Snooped VLANs Only.........................................................................................................295
Dynamic ARP Inspection..........................................................................................................................................296
Conguring 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.........................................................................................................299
10