ZyXEL Communications USG 2000 39.7 Device HA Technical Reference, Active-PassiveMode Device HA with Bridge Interfaces

Chapter 39 Device HA

Table 182 Configuration > Device HA > Legacy Mode > Add (continued)

LABEL	DESCRIPTION
VRID	Type the virtual router ID number.

Virtual Router	This is the interface’s IP address and subnet mask in the virtual router.
IP (VRIP) /
Subnet Mask

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 Authentication Types on page 375 for more information about
	authentication methods.

OK	Click OK to save your changes back to the ZyWALL.

Cancel	Click Cancel to exit this screen without saving your changes.

Here are two ways to avoid a broadcast storm when you connect the bridge interfaces on two ZyWALLs.

First Option for Connecting the Bridge Interfaces on Two ZyWALLs

The first way is to activate device HA before connecting the bridge interfaces as shown in the following example.