Waters Network Systems GSM2108 Operating Manual page 19

According to the scheme above, a subnet mask 255.255.255.0 will partition a network with the
class C. This means there will be a maximum of 254 effective nodes existing in this sub-netted
network and is considered a physical network in an autonomous network. It owns a network IP
address which may look like 168.1.2.0.
With the subnet mask, a bigger network can be divided into smaller pieces. If you want to have
more than two independent networks in a LAN, the network must be partitioned. The subnet
mask must be applied.
For different network applications, the subnet mask may look like 255.255.255.240. This means
it is a small network accommodating a maximum of 15 nodes in the network.
Default Gateway:
For the routed packets, if the destination is not in the routing table, all traffic is put into the
device with the designated IP address, known as default router. Basically, it is a routing policy.
The gateway setting is used for Trap Events Host only in the switch.
Waters Network Systems
Prefix Length No. of IP matched No. of Addressable IP
/32
/31
/30
/29
/28
/27
/26
/25
/24
/23
/22
/21
/20
/19
/18
/17
/16
Table 4-2
User's Manual
GSM-2108/GSM-1008SFP
1
2
4
8
16
32
64
128
256
512
1024 1022
2048 2046
4096 4094
8192 8190
16384 16382
32768 32766
65536 65534
-
-
2
6
14
30
62
126
254
510
Page 19