White Papers

Applying DCB Policies in a Switch Stack.................................................................................................................... 275
Congure a DCBx Operation........................................................................................................................................275
DCBx Operation....................................................................................................................................................... 276
DCBx Port Roles...................................................................................................................................................... 276
DCB Conguration Exchange.................................................................................................................................277
Conguration Source Election................................................................................................................................278
Propagation of DCB Information............................................................................................................................278
Auto-Detection and Manual Conguration of the DCBx Version.......................................................................279
DCBx Example..........................................................................................................................................................279
DCBx Prerequisites and Restrictions.....................................................................................................................280
Conguring DCBx....................................................................................................................................................280
Verifying the DCB Conguration..................................................................................................................................284
QoS dot1p Trac Classication and Queue Assignment...........................................................................................291
Conguring the Dynamic Buer Method.................................................................................................................... 291
Sample DCB Conguration...........................................................................................................................................292
PFC and ETS Conguration Command Examples...............................................................................................294
13 Dynamic Host Conguration Protocol (DHCP).........................................................................................295
DHCP Packet Format and Options............................................................................................................................. 295
Assign an IP Address using DHCP............................................................................................................................... 297
Implementation Information..........................................................................................................................................298
Congure the System to be a DHCP Server............................................................................................................. 298
Conguring the Server for Automatic Address Allocation..................................................................................299
Specifying a Default Gateway................................................................................................................................300
Congure a Method of Hostname Resolution..................................................................................................... 300
Using DNS for Address Resolution........................................................................................................................300
Using NetBIOS WINS for Address Resolution...................................................................................................... 301
Creating Manual Binding Entries............................................................................................................................ 301
Debugging the DHCP Server..................................................................................................................................301
Using DHCP Clear Commands.............................................................................................................................. 302
Congure the System to be a DHCP Client............................................................................................................... 302
Conguring the DHCP Client System...................................................................................................................302
DHCP Client on a Management Interface............................................................................................................304
DHCP Client Operation with Other Features.......................................................................................................304
Congure the System for User Port Stacking (Option 230)................................................................................... 305
Congure Secure DHCP...............................................................................................................................................305
Option 82..................................................................................................................................................................306
DHCP Snooping.......................................................................................................................................................306
Drop DHCP Packets on Snooped VLANs Only..................................................................................................... 311
Dynamic ARP Inspection......................................................................................................................................... 312
Conguring Dynamic ARP Inspection.................................................................................................................... 312
Source Address Validation............................................................................................................................................. 313
Enabling IP Source Address Validation...................................................................................................................314
DHCP MAC Source Address Validation................................................................................................................. 314
Enabling IP+MAC Source Address Validation....................................................................................................... 315
Viewing the Number of SAV Dropped Packets.................................................................................................... 315
10
Contents