User`s guide

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Advanced Network Settings
Configuration – Network > Advanced Network Settings
The settings described in this web page are “advanced” in the sense that in the vast
majority of configurations and implementations they should not require changing.
Secondary IP Address a.b.c.d
The value in this text box assigns an additional IP address to the router that is not
associated with any particular interface. The router will respond directly to incoming traffic
for this address, i.e. it will not attempt to onward route any IP packets for this address.
When connected to a Serial interface using TCP
Advertise an MSS of n bytes
The value in this text box sets the maximum segment size used/advertised by an
asynchronous serial port connected to TCP sockets.
Use a Rx Window size of n bytes
The value in this text box sets the Rx window size used/advertised by an asynchronous
serial port connected to TCP sockets.
Default SSL version for outgoing connections
This drop-down menu box selects which version of the SSL protocol to use in the “tcpdial”
command. The options are:
• Auto, which allows the server to select the version.
• TLSv1 only
• SSLv2 only
• SSLv3 only.
Some servers are configured to work with a particular version, and unless this version is
specifically requested, the connection attempt will fail.
Maximum DNS response cache time
This specifies the maximum time (in seconds) that the unit will cache negativeve DNS
responses for. The maximum time to live for positive DNS responses remains at 300
seconds.
Related CLI Commands
Entity
Instance
Parameter
Values
Equivalent Web Parameter
cmd n sec_ip Valid IP address Secondary IP address a.b.c.d
sockopt n asymss 0 - 2147483648
When connected to a serial
interface using TCP Advertise
an MSS of n bytes
sockopt n asyrxwin 0 - 2147483648
Use a Rx Window size of n