Deployment Guide

Table Of Contents
Configuring the Server for Automatic Address Allocation..............................................................................325
Specifying a Default Gateway................................................................................................................................326
Configure a Method of Hostname Resolution....................................................................................................327
Using DNS for Address Resolution....................................................................................................................... 327
Using NetBIOS WINS for Address Resolution....................................................................................................327
Creating Manual Binding Entries........................................................................................................................... 327
Debugging the DHCP Server..................................................................................................................................328
Using DHCP Clear Commands............................................................................................................................... 328
Configure the System to be a Relay Agent.............................................................................................................. 328
Configure the System to be a DHCP Client............................................................................................................. 330
DHCP Client on a Management Interface...........................................................................................................330
DHCP Client Operation with Other Features.....................................................................................................330
DHCP Relay When DHCP Server and Client are in Different VRFs.................................................................... 331
Configuring Route Leaking between VRFs on DHCP Relay Agent................................................................331
Non-default VRF configuration for DHCPv6 helper address............................................................................... 332
Configuring DHCP relay source interface.................................................................................................................333
Global DHCP relay source IPv4 or IPv6 configuration ....................................................................................333
Interface level DHCP relay source IPv4 or IPv6 configuration .....................................................................333
Configure Secure DHCP................................................................................................................................................334
Option 82.................................................................................................................................................................... 334
DHCPv6 relay agent options.................................................................................................................................. 335
DHCP Snooping.........................................................................................................................................................335
Drop DHCP Packets on Snooped VLANs Only.................................................................................................. 337
Dynamic ARP Inspection......................................................................................................................................... 338
Configuring Dynamic ARP Inspection...................................................................................................................339
Source Address Validation............................................................................................................................................ 339
Enabling IP Source Address Validation................................................................................................................ 340
DHCP MAC Source Address Validation...............................................................................................................340
Enabling IP+MAC Source Address Validation..................................................................................................... 341
Viewing the Number of SAV Dropped Packets.................................................................................................. 341
Clearing the Number of SAV Dropped Packets..................................................................................................341
Chapter 14: Equal Cost Multi-Path (ECMP)............................................................................... 343
ECMP for Flow-Based Affinity.................................................................................................................................... 343
Enabling Deterministic ECMP Next Hop............................................................................................................. 343
Configuring the Hash Algorithm Seed..................................................................................................................343
Link Bundle Monitoring............................................................................................................................................ 344
Managing ECMP Group Paths.....................................................................................................................................344
Creating an ECMP Group Bundle............................................................................................................................... 345
Modifying the ECMP Group Threshold..................................................................................................................... 345
BGP Multipath Operation with Link Bankwidth.......................................................................................................345
Dynamic Re-calculation of Link Bankwidth...............................................................................................................347
Weighted ECMP for Static Routes.............................................................................................................................347
ECMP Support in L3 Host and LPM Tables............................................................................................................. 348
Chapter 15: FCoE Transit...........................................................................................................349
Fibre Channel over Ethernet........................................................................................................................................ 349
Ensure Robustness in a Converged Ethernet Network.........................................................................................349
FIP Snooping on Ethernet Bridges.............................................................................................................................. 351
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Contents