ZyXEL Communications ZyWALL 300 User Manual

 Chapter 33 Device HA

ZyWALL USG 300 User’s Guide

VRID

Type the virtual router ID number.

Description

Type the description of the VRRP group. This field is only for your reference. It may 
be up to sixty printable ASCII characters long.

VRRP Interface

Select the interface in this device that is part of the virtual router. You can only 
select interfaces that have static IP addresses.

Role

Select the role that you want the interface plays in the virtual router. Choices are:
Master - This interface is the master interface in the virtual router. The interface 
always uses its static IP address, not the management IP address of the VRRP 
group.

Note: Do not set this field to Master for two or more routers in the 

same virtual router (same VR ID).

Backup - This interface is a backup interface in the virtual router. The interface 
may use its static IP address or the management IP address of the VRRP group, 
depending on its current role. The current role depends on the other routers in the 
virtual router.

Priority

This field is available if the selected interface is a Backup interface. Type the 
priority of the backup interface. The backup interface with the highest value takes 
over the role of the master interface if the master interface becomes unavailable. 
The priority must be between 1 and 254. (The master interface has priority 255.)

Preempt

This field is available if the selected interface is a Backup interface. Select this if 
the selected interface should become the master interface if a lower-priority 
interface is the master when this one is enabled. (If the role is Master, the interface 
preempts by default.)

Manage IP

This field is available if the selected interface is a Backup interface. Enter the IP 
address of the interface while it is in Stand-By mode. It is recommended that this 
IP address be in the same subnet as the interface. If it is not in the same subnet, 
the backup router cannot synchronize with the master via this VRRP interface.

Manage IP 
Subnet Mask

This field is available if the selected interface is a Backup interface.

Authentication

Select the authentication method used in the virtual router. Every interface in a 
virtual router must use the same authentication method and password. Choices 
are:
None - this virtual router does not use any authentication method.
Text - this virtual router uses a plain text password for authentication. Type the 
password in the field next to the radio button. The password can consist of 
alphanumeric characters, the underscore, and some punctuation marks (+-/*= :; .! 
@$&%#~ ‘ \ () ), and it can be up to eight characters long.
IP AH(MD5) - this virtual router uses an encrypted MD5 password for 
authentication. Type the password in the field next to the radio button. The 
password can consist of alphanumeric characters, the underscore, and some 
punctuation marks (+-/*= :; .! @$&%#~ ‘ \ () ), and it can be up to eight characters 
long.
See 

 for more information about authentication 

methods.

OK

Click OK to save your changes. 

Cancel

Click Cancel to exit this screen without saving your changes.

Table 153   Device HA > VRRP Group > Edit (continued)