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Duplex Mode
The Ethernet supports half or full duplex communications. This setting will depend on
the device that is connected to the eCNA-10 (network switch, PC, etc.).
IP Address
The IP address assigned to the unit can be modified. Change each octet of the address
by using the list box to select the desired number.
Subnet Mask
The Subnet Mask assigned to the unit can be modified. Change each octet of the
mask by using the list box to select the desired number.
Gateway IP Address
The Gateway IP address assigned to the unit can be modified. Change each
octet of the address by using the list box to select the desired number.
Multicast
IP Multicast allows the eCNAs that belong to the multicast group to exchange status and
control information. The network infrastructure between all eCNAs must be multicast capable,
including intermediate routers. Multicast can be
Enabled
or
Disabled
. Multicast must be enabled
and configured in order to use the
Network Monitor
screen.
Multicast Time to Live
Each IP Multicast packet uses a time-to-live (TTL) parameter. This
parameter controls the number of hops that a Multicast packet is allowed to propagate. Each time a
router forwards a packet it’s TTL is decremented. A Multicast packet whose TTL has expired (is 0) is
dropped, without an error notification to the sender. This mechanism prevents messages from
needless transmission to regions of a network that lie beyond the subnets containing the multicast
group members. This setting will depend on the physical network. You can adjust the range of
multicast propagations from 0 to 62.
Multicast Group IP Base Address
Multicast addresses are in the range from 224.0.0.0 to
239.255.255.255. All eCNAs that are to belong to the same multicast group must have the same
Multicast Group IP Starting Address. A block of 30 addresses should be reserved for current and
future communications between eCNAs. For example, if you were to assign a starting address of
239.255.100.0, be sure that 239.255.100.0 to 239.255.100.30 are not being used for any other
multicast enabled devices. Change each octet of the address by using the list box to select the
desired number.
IP Multicast Address Ranges and Uses
Range Start Address
Range End Address
Description
224.0.0.0
224.0.0.255
Reserved for special “well-known” multicast addresses.
224.0.1.0
238.255.255.255
Globally-scoped (internet-wide) multicast addresses.
239.0.0.0
239.255.255.255
Administratively-scoped (local) multicast addresses.
Click on the
Reset
button to put the original data back. Click the
Submit
button to save new settings
to the eCNA-10.
U
Note: Changes to the
Duplex Mode
,
IP Address
,
Subnet Mask
and
Gateway IP
Address
will not take effect until the eCNA-10 is re-booted. The eCNA can be re-booted
locally by cycling power with the front panel power switch or from the web browser by
clicking on the
Start RTOS
button from the
Firmware Update
screen.
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eCNA-10 Operation and Installation Manual Version 1.270-00