The network layer, layer 3, is
the place a ton of activity continues for many networks. The network layer
characterizes how data bundles get starting with one point then onto the next
on a network and what goes into every parcel. The network layer utilizes distinctive
bundle protocols, for example, Internet Protocol (IP) & Internet Protocol
Exchange (IPX). These bundle protocols incorporate source and destination
directing data. The steering data in every bundle illuminates the network where
to send the parcel to achieve its destination and tells the getting PC from
where the parcel began.
The network layer is most vital when
the network association goes through one or more routers, which are hardware
gadgets that
look at every parcel and, from their source and destination addresses, send the
bundles to their appropriate destination. Over a mind boggling network, for
example, the Internet, a bundle may experience ten or more switches before it
achieves its destination. On a LAN, a bundle may not experience any switches to
get to its destination, or it may experience one or more.
Note that breaking the network layer
(otherwise called the packet layer) into a different layer
from the physical and data- link layers implies the protocols
characterized
in this layer can be continued any varieties of the lower layers. Thus, to
place this into true terms, an IP parcel can be sent over an Ethernet network,
a Token Ring network, or even a serial link that interfaces two PCs. The same
remains constant for an IPX parcel:
In the event that both PCs can deal
with IPX, and they share the lower-level layers (whatever they may be) in like
manner, then the network association can be made.
15%'> link layer.
0 comments:
Post a Comment