Parameter Supervision Settings
Link The WAN link to be monitored (can be ANY)
Mode Specifies whether the link shall only be monitored if being up (e.g.
for using a VPN tunnel) or if connectivity shall be also validated at
connection establishment (default)
Primary host The primary host to be monitored
Secondary host The secondary host to be monitored (optional)
Ping timeout The amount of time in milliseconds a response for a single ping can
take, consider to increase this value in case of slow and tardy links
(such as 2G connections)
Ping interval The interval in seconds at which pings are transmitted on each inter-
face
Retry interval The interval in seconds at which pings are re-transmitted in case a
first ping failed
Max. number of failed trials The maximum number of failed ping trials until the link will be declared
as down
Emergency action The emergency action which should be taken after a maximum down-
time has been reached. Using reboot would perform a reboot of the
system, restart link services will restart all link-related applica-
tions including a reset of the modem.
WAN Settings
This page can be used to configure WAN specific settings like the Maximum Segment Size (MSS).
The MSS corresponds to the largest amount of data (in bytes) that the router can handle in a single,
unfragmented TCP segment. In order to avoid any negative side effects, the number of bytes in the
data segment and the headers must not add up to more than the number of bytes in the Maximum
Transmission Unit (MTU). The MTU can be configured per each interface and corresponds to the
largest packet size that can be transmitted.
NB1601 47 User Manual for NRSW version 4.8.0.103
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