3. CONFIGURATION
3.2
VRRP Configuration
Select the
VRRP
menu item to enter the VRRP configuration. VRRP protocol (Virtual
Router Redundancy Protocol) allows you to transfer packet routing from the main router to
a backup router in case the main router fails. (This can be used to provide a wireless cellular
backup to a primary wired router in critical applications.) If the
Enable VRRP
is checked, you
may set the following parameters.
Item
Description
Virtual Server IP Address
This parameter sets the virtual server IP address. This ad-
dress must be the same for both the primary and backup
routers. Devices on the LAN will use this address as their
default gateway IP address.
Virtual Server ID
This parameter distinguishes one virtual router on the net-
work from another. The main and backup routers must use
the same value for this parameter.
Host Priority
The active router with highest priority set by the parameter
Host Priority, is the main router. According to RFC 2338, the
main router should have the highest possible priority – 255.
The backup router(s) have a priority in the range 1 – 254
(default value is 100). A priority value of 0 is not allowed.
Table 17: VRRP configuration
You may set the
Check connection
flag in the second part of the window to enable au-
tomatic test messages for the cellular network. In some cases, the mobile WAN connection
could still be active but the router will not be able to send data over the cellular network. This
feature is used to verify that data can be sent over the PPP connection and supplements
the normal VRRP message handling. The currently active router (main/backup) will send test
messages to the defined
Ping IP Address
at periodic time intervals (
Ping Interval
) and wait for
a reply (
Ping Timeout
). If the router does not receive a response to the Ping command, it will
retry up to the number of times specified by the
Ping Probes
parameter. After that time, it will
switch itself to a backup router until the PPP connection is restored.
Item
Description
Ping IP Address
Destinations IP address for the Ping commands. IP Address can
not be specified as a domain name.
Ping Interval
Interval in seconds between the outgoing Pings.
Ping Timeout
Time in seconds to wait for a response to the Ping.
Ping Probes
Maximum number of failed ping requests.
Table 18: Check connection
You may use the DNS server of the mobile carrier as the destination IP address for the test
messages (Pings).
25
Summary of Contents for B+B SmartWorx LR77 v2
Page 1: ...Configuration Manual for v2 Routers ...
Page 18: ...2 STATUS WiFi Scan output may look like this Figure 4 WiFi Scan 11 ...
Page 29: ...3 CONFIGURATION Figure 12 Example 1 LAN Configuration Page 22 ...
Page 34: ...3 CONFIGURATION Figure 19 Example of VRRP configuration backup router 27 ...
Page 42: ...3 CONFIGURATION Figure 20 Mobile WAN Configuration 35 ...
Page 50: ...3 CONFIGURATION Figure 24 WiFi Configuration 43 ...
Page 75: ...3 CONFIGURATION Figure 36 IPsec Tunnels Configuration 68 ...
Page 105: ...3 CONFIGURATION Figure 54 Expansion Port Configuration 98 ...
Page 110: ...3 CONFIGURATION Figure 59 Example 2 USB port configuration 103 ...