Administrator Guide

Configuring the Server for Automatic Address Allocation......................................................................................315
Specifying a Default Gateway.................................................................................................................................... 316
Configure a Method of Hostname Resolution..........................................................................................................316
Using DNS for Address Resolution............................................................................................................................ 316
Using NetBIOS WINS for Address Resolution..........................................................................................................317
Creating Manual Binding Entries................................................................................................................................ 317
Debugging the DHCP Server......................................................................................................................................317
Using DHCP Clear Commands................................................................................................................................... 317
Configure the System to be a Relay Agent.................................................................................................................... 318
Configure the System to be a DHCP Client................................................................................................................... 319
DHCP Client on a Management Interface................................................................................................................ 319
DHCP Client Operation with Other Features.......................................................................................................... 320
DHCP Relay When DHCP Server and Client are in Different VRFs...........................................................................320
Configuring Route Leaking between VRFs on DHCP Relay Agent....................................................................... 321
Non-default VRF configuration for DHCPv6 helper address...................................................................................... 322
Configuring DHCP relay source interface...................................................................................................................... 322
Global DHCP relay source IPv4 or IPv6 configuration ...........................................................................................322
Interface level DHCP relay source IPv4 or IPv6 configuration .............................................................................323
Configure Secure DHCP.................................................................................................................................................. 324
Option 82 (DHCPv4 relay options)........................................................................................................................... 324
DHCPv6 relay agent options..................................................................................................................................... 325
DHCP Snooping...........................................................................................................................................................325
Drop DHCP Packets on Snooped VLANs Only........................................................................................................327
Dynamic ARP Inspection.............................................................................................................................................327
Configuring Dynamic ARP Inspection....................................................................................................................... 328
Source Address Validation............................................................................................................................................... 329
Enabling IP Source Address Validation..................................................................................................................... 329
DHCP MAC Source Address Validation................................................................................................................... 330
Enabling IP+MAC Source Address Validation..........................................................................................................330
Viewing the Number of SAV Dropped Packets.......................................................................................................330
Clearing the Number of SAV Dropped Packets....................................................................................................... 331
14 Equal Cost Multi-Path (ECMP).................................................................................................332
ECMP for Flow-Based Affinity........................................................................................................................................ 332
Enabling Deterministic ECMP Next Hop.................................................................................................................. 332
Configuring the Hash Algorithm Seed...................................................................................................................... 332
Link Bundle Monitoring............................................................................................................................................... 333
Managing ECMP Group Paths........................................................................................................................................ 333
Creating an ECMP Group Bundle................................................................................................................................... 333
Modifying the ECMP Group Threshold.......................................................................................................................... 334
BGP Multipath Operation with Link Bankwidth............................................................................................................ 334
Dynamic Re-calculation of Link Bankwidth....................................................................................................................336
Weighted ECMP for Static Routes.................................................................................................................................336
ECMP Support in L3 Host and LPM Tables.................................................................................................................. 336
15 FCoE Transit...........................................................................................................................338
Fibre Channel over Ethernet............................................................................................................................................338
Ensure Robustness in a Converged Ethernet Network............................................................................................... 338
FIP Snooping on Ethernet Bridges..................................................................................................................................339
10
Contents