Chapter 39 Device HA
ZyWALL USG 300 User’s Guide
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39.5 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.
VRRP Groups
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.
• You can only use interfaces that have static IP addresses.
• You can only enable one VRRP group for each interface, and you can only have
one active VRRP group for each virtual router.
• If you create a VRRP group for an Ethernet interface that has a VLAN interface
configured on it, make sure you create a separate VRRP group for the VLAN
interface. This will avoid an IP conflict if the backup ZyWALL takes over for the
master.
• When the ZyWALL is the master, the interface uses its IP address, the IP
address of the virtual router. If the ZyWALL is a backup, the interface uses its
management IP address.
• You can only have one active VRRP group for each interface, and you can only
have one active VRRP group for each virtual router (VR ID).
• You can set up authentication for a VRRP group. If you select AH MD5
authentication, the VRRP group uses IP protocol 51 (AH), instead of IP protocol
112 (VRRP).
Link Monitoring and Management Access
Link monitoring has a backup ZyWALL take over all of an unavailable master
ZyWALL’s static IP addresses. This way the backup ZyWALL takes over all of the
master ZyWALL’s functions. This also means you can only access the original
master ZyWALL through its management IP address.
Summary of Contents for USG-300 - V2.20 ED 2
Page 2: ......
Page 30: ...Table of Contents ZyWALL USG 300 User s Guide 30 ...
Page 31: ...31 PART I User s Guide ...
Page 32: ...32 ...
Page 38: ...Chapter 1 Introducing the ZyWALL ZyWALL USG 300 User s Guide 38 ...
Page 46: ...Chapter 2 Features and Applications ZyWALL USG 300 User s Guide 46 ...
Page 64: ...Chapter 3 Web Configurator ZyWALL USG 300 User s Guide 64 ...
Page 74: ...Chapter 4 Installation Setup Wizard ZyWALL USG 300 User s Guide 74 ...
Page 116: ...Chapter 6 Configuration Basics ZyWALL USG 300 User s Guide 116 ...
Page 184: ...Chapter 7 Tutorials ZyWALL USG 300 User s Guide 184 ...
Page 221: ...Chapter 8 L2TP VPN Example ZyWALL USG 300 User s Guide 221 ...
Page 222: ...Chapter 8 L2TP VPN Example ZyWALL USG 300 User s Guide 222 ...
Page 223: ...223 PART II Technical Reference ...
Page 224: ...224 ...
Page 238: ...Chapter 9 Dashboard ZyWALL USG 300 User s Guide 238 ...
Page 282: ...Chapter 10 Monitor ZyWALL USG 300 User s Guide 282 ...
Page 378: ...Chapter 14 Trunks ZyWALL USG 300 User s Guide 378 ...
Page 394: ...Chapter 15 Policy and Static Routes ZyWALL USG 300 User s Guide 394 ...
Page 408: ...Chapter 16 Routing Protocols ZyWALL USG 300 User s Guide 408 ...
Page 428: ...Chapter 19 NAT ZyWALL USG 300 User s Guide 428 ...
Page 433: ...Chapter 20 HTTP Redirect ZyWALL USG 300 User s Guide 433 ...
Page 434: ...Chapter 20 HTTP Redirect ZyWALL USG 300 User s Guide 434 ...
Page 456: ...Chapter 23 Authentication Policy ZyWALL USG 300 User s Guide 456 ...
Page 474: ...Chapter 24 Firewall ZyWALL USG 300 User s Guide 474 ...
Page 515: ...Chapter 25 IPSec VPN ZyWALL USG 300 User s Guide 515 ...
Page 516: ...Chapter 25 IPSec VPN ZyWALL USG 300 User s Guide 516 ...
Page 529: ...Chapter 26 SSL VPN ZyWALL USG 300 User s Guide 529 ...
Page 530: ...Chapter 26 SSL VPN ZyWALL USG 300 User s Guide 530 ...
Page 540: ...Chapter 27 SSL User Screens ZyWALL USG 300 User s Guide 540 ...
Page 542: ...Chapter 28 SSL User Application Screens ZyWALL USG 300 User s Guide 542 ...
Page 550: ...Chapter 29 SSL User File Sharing ZyWALL USG 300 User s Guide 550 ...
Page 635: ...Chapter 34 IDP ZyWALL USG 300 User s Guide 635 ...
Page 636: ...Chapter 34 IDP ZyWALL USG 300 User s Guide 636 ...
Page 646: ...Chapter 35 ADP ZyWALL USG 300 User s Guide 646 Figure 448 Profiles Protocol Anomaly ...
Page 657: ...Chapter 35 ADP ZyWALL USG 300 User s Guide 657 ...
Page 658: ...Chapter 35 ADP ZyWALL USG 300 User s Guide 658 ...
Page 690: ...Chapter 37 Content Filter Reports ZyWALL USG 300 User s Guide 690 ...
Page 708: ...Chapter 38 Anti Spam ZyWALL USG 300 User s Guide 708 ...
Page 730: ...Chapter 39 Device HA ZyWALL USG 300 User s Guide 730 ...
Page 746: ...Chapter 40 User Group ZyWALL USG 300 User s Guide 746 ...
Page 752: ...Chapter 41 Addresses ZyWALL USG 300 User s Guide 752 ...
Page 764: ...Chapter 43 Schedules ZyWALL USG 300 User s Guide 764 ...
Page 780: ...Chapter 45 Authentication Method ZyWALL USG 300 User s Guide 780 ...
Page 802: ...Chapter 46 Certificates ZyWALL USG 300 User s Guide 802 ...
Page 814: ...Chapter 48 SSL Application ZyWALL USG 300 User s Guide 814 ...
Page 824: ...Chapter 49 Endpoint Security ZyWALL USG 300 User s Guide 824 ...
Page 876: ...Chapter 50 System ZyWALL USG 300 User s Guide 876 ...
Page 916: ...Chapter 54 Reboot ZyWALL USG 300 User s Guide 916 ...
Page 918: ...Chapter 55 Shutdown ZyWALL USG 300 User s Guide 918 ...
Page 938: ...Chapter 56 Troubleshooting ZyWALL USG 300 User s Guide 938 ...
Page 946: ...Chapter 57 Product Specifications ZyWALL USG 300 User s Guide 946 ...
Page 1118: ...Appendix F Open Software Announcements ZyWALL USG 300 User s Guide 1118 ...