Alcatel-Lucent OmniSwitch 6800 Series - Page 17

OmniSwitch 6800/6850/9000 Network Configuration Guide March 2008 xvii
Using Automatic IP Configuration .............................................................................22-12
Enabling Automatic IP Configuration ..................................................................22-12
Configuring UDP Port Relay ......................................................................................22-13
Enabling/Disabling UDP Port Relay ....................................................................22-14
Specifying a Forwarding VLAN ..........................................................................22-14
Configuring DHCP Security Features .........................................................................22-15
Using the Relay Agent Information Option (Option-82) .....................................22-15
How the Relay Agent Processes DHCP Packets from the Client .................22-16
How the Relay Agent Processes DHCP Packets from the Server .................22-16
Enabling the Relay Agent Information Option-82 ........................................22-17
Configuring a Relay Agent Information Option-82 Policy ...........................22-17
Using DHCP Snooping ........................................................................................22-18
DHCP Snooping Configuration Guidelines ..................................................22-19
Enabling DHCP Snooping .............................................................................22-19
Configuring the Port Trust Mode ..................................................................22-21
Bypassing the Option-82 Check on Untrusted Ports .....................................22-21
Configuring Port IP Source Filtering ............................................................22-22
Configuring the DHCP Snooping Binding Table ..........................................22-22
Layer 2 DHCP Snooping ...............................................................................22-23
Verifying the DHCP Relay Configuration ..................................................................22-24
Chapter 23 Configuring VRRP .....................................................................................................23-1
In This Chapter ..............................................................................................................23-1
VRRP Specifications .....................................................................................................23-3
VRRP Defaults ..............................................................................................................23-3
Quick Steps for Creating a Virtual Router ....................................................................23-5
VRRP Overview ............................................................................................................23-6
Why Use VRRP? ....................................................................................................23-7
Definition of a Virtual Router ................................................................................23-7
VRRP MAC Addresses ..........................................................................................23-8
ARP Requests ..................................................................................................23-8
ICMP Redirects ...............................................................................................23-8
VRRP Startup Delay ..............................................................................................23-9
VRRP Tracking ......................................................................................................23-9
Configuring Collective Management Functionality ...............................................23-9
Interaction With Other Features ....................................................................................23-9
VRRP Configuration Overview ..................................................................................23-10
Basic Virtual Router Configuration .....................................................................23-10
Creating/Deleting a Virtual Router ......................................................................23-10
Specifying an IP Address for a Virtual Router ....................................................23-11
Configuring the Advertisement Interval ..............................................................23-12
Configuring Virtual Router Priority .....................................................................23-12
Setting Preemption for Virtual Routers ................................................................23-12
Enabling/Disabling a Virtual Router ....................................................................23-13
Setting VRRP Traps .............................................................................................23-14
Setting VRRP Startup Delay ................................................................................23-14