NexLog Recorder User Manual v2.2.0
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Static
: If the type is set to Static, NexLog Configuration Manager will allow
you to manually enter all the networking settings for this NIC. This
information should be provided by your Network Administrator. The Address
field is the IP Address being assigned to the recorder. Netmask, gateway, and
broadcast should all be configured as well.
SPAN
: The third possible option is SPAN. A SPAN Port is a Port on a Network
Switch or Router that is "transmit only". When a recorder's NIC is connected
to a SPAN port, it cannot send any traffic to that port, only receive any traffic
that has been configured on the router to be forwarded to the SPAN Port.
SPAN Ports are used for passive monitoring and recording of VoIP or RoIP
traffic.
If at least two NICs are present in your NexLog Recorder, you will also have a
'BIND' option in Type. If BIND is selected on two Ethernet devices, they will be
bound together into a single network link which is configured as a unit, rather
than separately. This feature is sometimes known as "NIC Bonding" or "Link
Aggregation" and is used to provide Network redundancy.
Considerations When Using a Static IP Address
When using static IP addresses, the network parameters must be set manually
from the front panel. There are some things you must consider when setting
these parameters:
The IP address must not be in use by another device. If it is, then the
address may not be accepted, and even if it is accepted, operation will be
unreliable.
If you need the recorder to communicate with other devices on the network,
such as an administration client, an NTP server, or the Internet, then the
devices must either be on the same subnet, or on a different subnet that can
be reached over a gateway. In the latter case, the address of the gateway
must be added to the recorder.
The subnet is determined by the Net Mask setting. Your subnet is the result
of an AND operation between the 4-octet net mask and the 4-octet IP
address. See
—Sample Net Mask and Subnet Settings
for two common
examples of net masks. Your facility’s network administrator should be able
to help you in assigning the proper IP address, net mask, broadcast address,
and if necessary, gateway address for the recorder. If the recorder will be
sending email, one or more DNS servers must be entered.
Table 7
—Sample Net Mask and Subnet Settings
Net Mask
IP Address
Network or Subnet
255.255.0.0
123.45.67.89
123.45.0.0
255.255.255.0
123.45.67.89
123.45.67.0
