GigaX Series L3 Managed Switch User Guide
117
The two extra bits in Field 4 can have four values (00, 01, 10, 11), so there are
four subnets. Each subnet uses the remaining six bits in field4 for its host IDs,
ranging from 0 to 63.
Sometimes a subnet mask does not specify any additional
network ID bits, and thus no subnets. Such a mask is
called a
default subnet mask
. These masks are:
Class A:
255.0.0.0
Class B:
255.255.0.0
Class C:
255.255.255.0
These are called
default
because they are used when a
network is initially configured, at which time it has no
subnets.
Summary of Contents for GIGAX 2024M
Page 1: ...1 GigaX Series Layer 3 Managed Switch User Guide ...
Page 24: ...24 Figure 5 Login and IP setup Screen ...
Page 30: ...30 Figure 11 Expanded Menu List ...
Page 37: ...GigaX Series L3 Managed Switch User Guide 37 Figure 16 Physical Interface ...
Page 51: ...GigaX Series L3 Managed Switch User Guide 51 Figure 26 Dynamic Address ...
Page 54: ...54 Figure 28 Tagged VLAN ...
Page 64: ...64 Figure 37 USM User ...
Page 69: ...GigaX Series L3 Managed Switch User Guide 69 Figure 41 Filter Attach ...