Siemens SCALANCE XM-400 Configuration Manual page 366

Configuring with Web Based Management
5.6 The "Layer 3 (IPv4)" menu
● Master IP Address
Shows the IPv4 address of the master router.
● Priority
Shows the priority of the virtual router.
Valid values are 1-254.
If an IPv4 address is assigned to the VRRP router that is also actually configured on the
local IPv4 interface, the value 255 is entered automatically. All other priorities can be
distributed freely among the VRRP routers. The higher the priority, the earlier the VRRP
router becomes "Master".
● Advert. Interval
Shows the interval at which the master router sends VRRP packets.
● Preempt
Shows the precedence of a router when changing roles between backup and master.
– yes
– no
VRRP and DHCP server
If you want to operate a DHCP server on the devices of a VRRP group, the DHCP server must
be configured on the master router. Backup routers do not react to DHCP queries. Make sure
that the master router is statically configured and that after a failure, becomes the master of
the VRRP group again.
Steps in configuration
1. Select the "VRRP" check box.
2. Select the required interface.
3. Enter the ID of the virtual router in the "VRID" input box.
4. Click the "Create" button. A new row is inserted in the table.
5. Select the "Reply to pings on virtual interfaces" check box so that virtual addresses reply
to pings as well.
6. Select the "VRID Tracking" check box to monitor the VRID.
7. Click the "Set Values" button. To configure the virtual router, click on the "Configuration"
tab.
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This router has precedence when changing roles.
This router does not have precedence when changing roles.
SCALANCE XM-400/XR-500 Web Based Management (WBM)
Configuration Manual, 05/2017, C79000-G8976-C248-12