Administrator Guide

Configuring ETS in a DCB Map................................................................................................................................. 259
Hierarchical Scheduling in ETS Output Policies............................................................................................................ 260
Using ETS to Manage Converged Ethernet Traffic..................................................................................................... 260
Applying DCB Policies in a Switch Stack....................................................................................................................... 260
Configure a DCBx Operation............................................................................................................................................261
DCBx Operation........................................................................................................................................................... 261
DCBx Port Roles.......................................................................................................................................................... 261
DCB Configuration Exchange.................................................................................................................................... 262
Configuration Source Election...................................................................................................................................263
Propagation of DCB Information...............................................................................................................................263
Auto-Detection and Manual Configuration of the DCBx Version......................................................................... 263
DCBx Example............................................................................................................................................................. 264
DCBx Prerequisites and Restrictions........................................................................................................................264
Configuring DCBx........................................................................................................................................................264
Verifying the DCB Configuration.....................................................................................................................................267
QoS dot1p Traffic Classification and Queue Assignment.............................................................................................274
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 DHCP Client.................................................................................................................. 284
Configuring the DHCP Client System.......................................................................................................................284
DHCP Client on a Management Interface............................................................................................................... 285
DHCP Client Operation with Other Features.......................................................................................................... 286
DHCP Relay When DHCP Server and Client are in Different VRFs...........................................................................286
Configuring Route Leaking between VRFs on DHCP Relay Agent.......................................................................287
Non-default VRF configuration for DHCPv6 helper address...................................................................................... 288
Configuring DHCP relay source interface......................................................................................................................288
Global DHCP relay source IPv4 or IPv6 configuration .......................................................................................... 288
Interface level DHCP relay source IPv4 or IPv6 configuration .............................................................................289
Configure the System for User Port Stacking (Option 230)...................................................................................... 290
Configure Secure DHCP.................................................................................................................................................. 290
Option 82 (DHCPv4 relay options)...........................................................................................................................290
DHCPv6 relay agent options...................................................................................................................................... 291
DHCP Snooping............................................................................................................................................................291
Drop DHCP Packets on Snooped VLANs Only....................................................................................................... 295
Dynamic ARP Inspection............................................................................................................................................ 296
Configuring Dynamic ARP Inspection.......................................................................................................................296
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