24 Port Gigabit Ethernet PoE Switch – User Manual Page 23 of 72
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©2014 MICROSENS GmbH & Co. KG – Hamm/Germany www.microsens.com
Fallback Subnet Mask:
Subnet mask is made for the purpose to get more network addresses because any
IP device in a network must own its IP address, composed of Network address and
Host address, otherwise can’t communicate with other devices each other. But un-
fortunately, the network classes A, B, and C are all too large to fit for almost all net-
works, hence, subnet mask is introduced to solve this problem. Subnet mask uses
some bits from host address and makes an IP address looked Network address,
Subnet mask number and host address. It is shown in the following figure. This re-
duces the total IP number of a network able to support, by the amount of 2 power of
the bit number of subnet number (2^(bit number of subnet number)).
Subnet mask is used to set the subnet mask value, which should be the same
value as that of the other devices resided in the same network it attaches.
For more information, please also see the Section 2-1-4 “IP Address Assignment”
in this manual.
Default: 255.255.255.0
Fallback Gateway:
Set an IP address for a gateway to handle those packets that do not meet the
routing rules predefined in the device. If a packet does not meet the criteria for
other pre-defined path, it must be forwarded to a default router on a default
path. This means any packet with undefined IP address in the routing table will
be sent to this device unconditionally.
Default: 192.168.1.254
Management VLAN:
Show the management VLAN number.
Password:
Set a password for this switch. Up to 16 characters are allowed in this parameter.
Any alphanumeric character is acceptable.
Default: admin
Inactivity Timeout (sec):
Set the auto-logout timer. The valid value is 0 ~ 60 in the unit of minute and a
decimal point is not allowed. The value 0 means auto-logout timer is disabled.
Default: 0
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