Users Guide

Using ETS to Manage Converged Ethernet Trac................................................................................................... 287
Applying DCB Policies in a Switch Stack.....................................................................................................................287
Congure a DCBx Operation........................................................................................................................................ 287
DCBx Operation....................................................................................................................................................... 287
DCBx Port Roles...................................................................................................................................................... 288
DCB Conguration Exchange................................................................................................................................ 289
Conguration Source Election................................................................................................................................289
Propagation of DCB Information........................................................................................................................... 290
Auto-Detection and Manual Conguration of the DCBx Version...................................................................... 290
DCBx Example.......................................................................................................................................................... 291
DCBx Prerequisites and Restrictions..................................................................................................................... 291
Conguring DCBx.....................................................................................................................................................291
Verifying the DCB Conguration................................................................................................................................. 295
QoS dot1p Trac Classication and Queue Assignment..........................................................................................304
Conguring the Dynamic Buer Method................................................................................................................... 305
Sample DCB Conguration...........................................................................................................................................306
PFC and ETS Conguration Command Examples...............................................................................................308
13 Dynamic Host Conguration Protocol (DHCP).........................................................................................309
DHCP Packet Format and Options............................................................................................................................. 309
Assign an IP Address using DHCP................................................................................................................................ 311
Implementation Information.......................................................................................................................................... 312
Congure the System to be a DHCP Server.............................................................................................................. 312
Conguring the Server for Automatic Address Allocation...................................................................................313
Specifying a Default Gateway.................................................................................................................................314
Congure a Method of Hostname Resolution...................................................................................................... 315
Using DNS for Address Resolution.........................................................................................................................315
Using NetBIOS WINS for Address Resolution...................................................................................................... 315
Creating Manual Binding Entries............................................................................................................................ 315
Debugging the DHCP Server..................................................................................................................................316
Using DHCP Clear Commands............................................................................................................................... 316
Congure the System to be a Relay Agent................................................................................................................. 316
Congure the System to be a DHCP Client................................................................................................................318
Conguring the DHCP Client System....................................................................................................................318
DHCP Client on a Management Interface............................................................................................................320
DHCP Client Operation with Other Features.......................................................................................................320
DHCP Relay When DHCP Server and Client are in Dierent VRFs.........................................................................321
Conguring Route Leaking between VRFs on DHCP Relay Agent.................................................................... 321
Congure the System for User Port Stacking (Option 230)....................................................................................322
Congure Secure DHCP............................................................................................................................................... 323
Option 82.................................................................................................................................................................. 323
DHCP Snooping....................................................................................................................................................... 324
Drop DHCP Packets on Snooped VLANs Only....................................................................................................328
Dynamic ARP Inspection.........................................................................................................................................329
Conguring Dynamic ARP Inspection................................................................................................................... 330
Source Address Validation............................................................................................................................................. 331
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