Administrator Guide

Configuring the Server for Automatic Address Allocation..............................................................................328
Specifying a Default Gateway................................................................................................................................329
Configure a Method of Hostname Resolution....................................................................................................330
Using DNS for Address Resolution....................................................................................................................... 330
Using NetBIOS WINS for Address Resolution....................................................................................................330
Creating Manual Binding Entries........................................................................................................................... 330
Debugging the DHCP Server.................................................................................................................................. 331
Using DHCP Clear Commands................................................................................................................................331
Configure the System to be a Relay Agent...............................................................................................................331
Configure the System to be a DHCP Client............................................................................................................. 333
DHCP Client on a Management Interface...........................................................................................................333
DHCP Client Operation with Other Features..................................................................................................... 333
DHCP Relay When DHCP Server and Client are in Different VRFs................................................................... 334
Configuring Route Leaking between VRFs on DHCP Relay Agent............................................................... 334
Non-default VRF configuration for DHCPv6 helper address...............................................................................335
Configuring DHCP relay source interface.................................................................................................................336
Global DHCP relay source IPv4 or IPv6 configuration ....................................................................................336
Interface level DHCP relay source IPv4 or IPv6 configuration .....................................................................336
Configure Secure DHCP................................................................................................................................................337
Option 82 (DHCPv4 relay options).......................................................................................................................338
DHCPv6 relay agent options.................................................................................................................................. 338
DHCP Snooping.........................................................................................................................................................339
Drop DHCP Packets on Snooped VLANs Only................................................................................................... 341
Dynamic ARP Inspection.......................................................................................................................................... 341
Configuring Dynamic ARP Inspection...................................................................................................................342
Source Address Validation............................................................................................................................................ 343
Enabling IP Source Address Validation................................................................................................................ 343
DHCP MAC Source Address Validation............................................................................................................... 344
Enabling IP+MAC Source Address Validation.....................................................................................................344
Viewing the Number of SAV Dropped Packets................................................................................................. 344
Clearing the Number of SAV Dropped Packets.................................................................................................345
Chapter 14: Equal Cost Multi-Path (ECMP)............................................................................... 346
ECMP for Flow-Based Affinity.................................................................................................................................... 346
Enabling Deterministic ECMP Next Hop............................................................................................................. 346
Configuring the Hash Algorithm Seed..................................................................................................................346
Link Bundle Monitoring............................................................................................................................................ 347
Managing ECMP Group Paths..................................................................................................................................... 347
Creating an ECMP Group Bundle................................................................................................................................348
Modifying the ECMP Group Threshold......................................................................................................................348
BGP Multipath Operation with Link Bankwidth.......................................................................................................348
Dynamic Re-calculation of Link Bankwidth.............................................................................................................. 350
Weighted ECMP for Static Routes............................................................................................................................ 350
ECMP Support in L3 Host and LPM Tables..............................................................................................................351
Chapter 15: FCoE Transit...........................................................................................................352
Fibre Channel over Ethernet........................................................................................................................................ 352
Ensure Robustness in a Converged Ethernet Network.........................................................................................352
FIP Snooping on Ethernet Bridges............................................................................................................................. 354
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