DCBx Prerequisites and Restrictions......................................................................................................................271Configuring DCBx..................................................................................................................................................... 271Verifying the DCB Configuration..................................................................................................................................275QoS dot1p Traffic Classification and Queue Assignment.......................................................................................... 282Configuring the Dynamic Buffer Method....................................................................................................................282Sample DCB Configuration...........................................................................................................................................283PFC and ETS Configuration Command Examples...............................................................................................28512 Dynamic Host Configuration Protocol (DHCP)......................................................................................... 286DHCP Packet Format and Options............................................................................................................................. 286Assign an IP Address using DHCP...............................................................................................................................288Implementation Information..........................................................................................................................................289Configure the System to be a DHCP Server..............................................................................................................289Configuring the Server for Automatic Address Allocation..................................................................................290Specifying a Default Gateway.................................................................................................................................291Configure a Method of Hostname Resolution...................................................................................................... 291Using DNS for Address Resolution.........................................................................................................................291Using NetBIOS WINS for Address Resolution..................................................................................................... 292Creating Manual Binding Entries............................................................................................................................292Debugging the DHCP Server................................................................................................................................. 292Using DHCP Clear Commands...............................................................................................................................293Configure the System to be a DHCP Client............................................................................................................... 293Configuring the DHCP Client System................................................................................................................... 293DHCP Client on a Management Interface............................................................................................................295DHCP Client Operation with Other Features.......................................................................................................295Configure the System for User Port Stacking (Option 230)................................................................................... 296Configure Secure DHCP............................................................................................................................................... 296Option 82.................................................................................................................................................................. 297DHCP Snooping....................................................................................................................................................... 297Drop DHCP Packets on Snooped VLANs Only....................................................................................................300Dynamic ARP Inspection......................................................................................................................................... 301Configuring Dynamic ARP Inspection................................................................................................................... 302Source Address Validation............................................................................................................................................ 303Enabling IP Source Address Validation..................................................................................................................303DHCP MAC Source Address Validation................................................................................................................ 304Enabling IP+MAC Source Address Validation.......................................................................................................304Viewing the Number of SAV Dropped Packets................................................................................................... 305Clearing the Number of SAV Dropped Packets...................................................................................................30513 Equal Cost Multi-Path (ECMP)................................................................................................................ 306ECMP for Flow-Based Affinity.....................................................................................................................................306Configuring the Hash Algorithm Seed.................................................................................................................. 306Link Bundle Monitoring................................................................................................................................................. 306Managing ECMP Group Paths............................................................................................................................... 307Creating an ECMP Group Bundle.......................................................................................................................... 307Modifying the ECMP Group Threshold................................................................................................................ 30810 Contents
