Alcatel-Lucent OmniSwitch 6850-48 - Page 24

Contents
xxiv OmniSwitch AOS Release 6 Network Configuration Guide September 2009
Configuring BOOTP/DHCP Relay Parameters ...................................................31-10
Setting the Forward Delay ....................................................................................31-10
Setting Maximum Hops .......................................................................................31-11
Setting the Relay Forwarding Option ...................................................................31-11
Using Automatic IP Configuration .............................................................................31-12
Enabling Automatic IP Configuration ..................................................................31-12
Configuring UDP Port Relay ......................................................................................31-13
Enabling/Disabling UDP Port Relay ....................................................................31-14
Specifying a Forwarding VLAN ..........................................................................31-14
Configuring DHCP Security Features .........................................................................31-15
Using the Relay Agent Information Option (Option-82) .....................................31-15
How the Relay Agent Processes DHCP Packets from the Client .................31-16
How the Relay Agent Processes DHCP Packets from the Server .................31-16
Enabling the Relay Agent Information Option-82 ........................................31-17
Configuring a Relay Agent Information Option-82 Policy ...........................31-17
Using DHCP Snooping ........................................................................................31-18
DHCP Snooping Configuration Guidelines ..................................................31-19
Enabling DHCP Snooping .............................................................................31-19
Configuring the Port Trust Mode ..................................................................31-21
Bypassing the Option-82 Check on Untrusted Ports .....................................31-21
Configuring Port IP Source Filtering ............................................................31-22
Configuring the DHCP Snooping Binding Table ..........................................31-22
Layer 2 DHCP Snooping ...............................................................................31-24
Verifying the DHCP Relay Configuration ..................................................................31-25
Chapter 32 Configuring VRRP .....................................................................................................32-1
In This Chapter ..............................................................................................................32-1
VRRP Specifications .....................................................................................................32-3
VRRP Defaults ..............................................................................................................32-3
Quick Steps for Creating a Virtual Router ....................................................................32-5
VRRP Overview ............................................................................................................32-6
Why Use VRRP? ....................................................................................................32-7
Definition of a Virtual Router ................................................................................32-7
VRRP MAC Addresses ..........................................................................................32-8
ARP Requests ..................................................................................................32-8
ICMP Redirects ...............................................................................................32-8
VRRP Startup Delay ..............................................................................................32-9
VRRP Tracking ......................................................................................................32-9
Configuring Collective Management Functionality ...............................................32-9
Interaction With Other Features ....................................................................................32-9
VRRP Configuration Overview ..................................................................................32-10
Basic Virtual Router Configuration .....................................................................32-10
Creating/Deleting a Virtual Router ......................................................................32-10
Specifying an IP Address for a Virtual Router ....................................................32-11
Configuring the Advertisement Interval ..............................................................32-12
Configuring Virtual Router Priority .....................................................................32-12