The Legacy Mode Screen - ZyXEL Communications ZYWALL USG 2000 Manual

Unified security gateway

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Table of Contents

Chapter 35 Device HA

The following table describes the labels in this screen.

Table 178 Device HA > Active-Passive Mode > Edit

Virtual Router

35.5 The Legacy Mode Screen

Virtual Router Redundancy Protocol (VRRP)

Legacy mode device HA uses Virtual Router Redundancy Protocol (VRRP) to create

redundant backup gateways to ensure that a default gateway is always available.

The ZyWALL uses a custom VRRP implementation and is not compatible with

standard VRRP.

While active-passive mode only requires a single cluster ID for the entire virtual

router, legacy mode device HA requires you to configure a separate VRRP group

and Virtual Router ID (VRID) for each interface in a virtual router.

Additional VRRP Notes

• It is possible to set up two virtual routers so that they back up each other.

• VRRP uses IP protocol 112.

In legacy mode, you create a VRRP group to add one of its interfaces to a virtual

router. You can add any Ethernet or VLAN interface with a static IP address. You do

not configure VRRP groups for virtual interfaces.

Select this to have device HA monitor the status of this interface's

This identifies the interface.

This is the interface's (static) IP address and subnet mask in the virtual

router. Whichever ZyWALL is currently serving as the master uses this

virtual router IP address and subnet mask. These fields are blank if the

interface is a DHCP client or has no IP settings.

Enter the interface's IP address for management access. You can use

this IP address to access the ZyWALL whether it is the master or a

backup. This management IP address should be in the same subnet as

the interface IP address.

Enter the subnet mask of the interface's management IP address.

Click OK to save your changes back to the ZyWALL.

Click Cancel to exit this screen without saving your changes.

ZyWALL USG 2000 User's Guide