ZyXEL Communications USG-300 - V2.20 ED 2, Manual

Page: 724 / 1149

Chapter 39 Device HA
ZyWALL USG 300 User’s Guide
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39.7 Device HA Technical Reference
Active-Passive Mode Device HA with Bridge Interfaces
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.
VRID Type the virtual router ID number.
Virtual Router
IP (VRIP) /
Subnet Mask This is the interface’s IP address and subnet mask in the virtual router.
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 407 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.
Table 192 Configuration > Device HA > Legacy Mode > Add (continued)
LABEL DESCRIPTION