Glossary
S
E5810B User’s Guide
135
It is called a mask because it can be used to identify the
subnet to which an IP address belongs by performing a
bitwise
AND
operation on the mask and the IP address. The
result is the subnetwork address:
Subnet Mask 255.255.240.000
11111111.11111111.11110000.00000000
IP Address 150.215.017.009
10010110.11010111.00010001.00001001
Subnet Address 150.215.016.000
10010110.11010111.00010000.00000000
The default subnet mask for the E5810B is 255.255.0.0.
Switch
Switch is a device that filters and forwards packets between
LAN segments. Switches operate at the data link layer (layer
2) and sometimes the network layer (layer 3) of the OSI
Reference Model and therefore support any packet protocol.
LANs that use switches to join segments are called switched
LANs or, in the case of Ethernet networks, switched
Ethernet LANs. A hub connects all the devices on its ports
together. A switch is a bit smarter, as it understands when
two devices (out of four, five, eight, sixteen, or even more)
want to talk to each other and gives them a switched
connection.
Symbolic name
Symbolic name is a name corresponding to a single
interface. This name uniquely identifies the interface on a
controller or gateway. If there is more than one interface on
the controller or gateway, each interface must have a unique
symbolic name.
Summary of Contents for E5810B
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