ZyXEL Communications USG 2000 manual 673

Chapter 39 Device HA

The following table describes the labels in this screen. See Section 39.4 on page 675 for more information as well.

Table 179 Configuration > Device HA > Active-Passive Mode

LABEL	DESCRIPTION
Show Advance	Click this button to display a greater or lesser number of configuration
Settings / Hide	fields.
Advance
Settings
Device Role	Select the device HA role that the ZyWALL plays in the virtual router.
	Choices are:
	Master - This ZyWALL is the master ZyWALL in the virtual router. This
	ZyWALL uses the virtual IP address for each monitored interface.

	Note: Do not set this field to Master for two or more ZyWALLs in
	the same virtual router (same cluster ID).
	Backup - This ZyWALL is a backup ZyWALL in the virtual router. This
	ZyWALL does not use any of the virtual IP addresses.
Priority	This field is available for a backup ZyWALL. Type the priority of the
	backup ZyWALL. The backup ZyWALL with the highest value takes over
	the role of the master ZyWALL if the master ZyWALL becomes
	unavailable. The priority must be between 1 and 254. (The master
	interface has priority 255.)
Enable	This field is available for a backup ZyWALL. Select this if this ZyWALL
Preemption	should become the master ZyWALL if a lower-priority ZyWALL is the
	master when this one is enabled. (If the role is master, the ZyWALL
	preempts by default.)
Cluster Settings
Cluster ID	Type the cluster ID number. A virtual router consists of a master
	ZyWALL and all of its backup ZyWALLs. If you have multiple ZyWALL
	virtual routers on your network, use a different cluster ID for each
	virtual router.
Authentication	Select the authentication method the virtual router uses. 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 Authentication Types on page 375 for more information about
	authentication methods.

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ZyWALL USG 2000 User’s Guide