The Similarities and Differences between Industrial 4g Router and Industrial Switch
1. Definition of Industrial 4G Router and Industrial
Switch
Industrial 4G router:
Industrial
4G router is a network device responsible for path finding. It provides users
with communication by finding the least communication from multiple paths in
the interconnection network. Industrial 4G router has two
typical functions: data channel function and control function. The functions of
data channel include forwarding decision, backplane forwarding and output link
scheduling, etc. The control function is usually implemented by software,
including information exchange, system configuration and system management
between the router and the neighboring industry 4G router. Industrial 4G
routers are used to connect multiple logically separate networks. The
industrial 4G router uses the routing table to select the path for data
transmission. The routing table contains the list of network addresses and the
distance between each address. The industrial 4G router uses the routing table
to find the correct path of the packet from the current location to the destination
address. The industrial 4G router uses the least time algorithm or the optimal
path algorithm to adjust the path of information transmission. If one network
path fails or becomes blocked, the industrial 4G router can choose another path
to ensure the normal transmission of information. Industrial 4G routers can
convert data formats and become necessary devices for network interconnection
between different protocols.
Industrial
4G routers use path searching protocol to obtain network information, and use
path searching algorithm and criterion based on "path searching
matrix" to select the optimal path. According to the OSI reference model,
an industrial 4G router is a network layer system. Industrial 4G routers are
divided into single-protocol industrial 4G router and multi-protocol industrial
4G router.
The
Internet is made up of a variety of networks, of which industrial 4G routers
are a very important part. Intranet to be incorporated into the Internet and
serve as Internet service, industrial 4G router is an indispensable component,
and the configuration of industrial 4G router is also relatively complex.
Industrial Switch:
Industrial
switch is a device that expands the network and provides more connection ports
for the sub-network to connect more computers. With the development of the
communications industry and the advancement of the informatization of the
national economy, the network exchange market has been rising steadily. It
features high cost ratio, high flexibility, relatively simple and easy to
implement. Therefore, Ethernet technology has become the most important LAN
networking technology, network switch has become the most popular switch. The
switch can be recognized based on MAC address, and can complete the function of
packaging and forwarding packet network equipment. An industrial switch can
"learn" the MAC address and store it in the internal address table, enabling
the data frame to go directly from the source address to the destination
address by establishing a temporary switching path between the originator of
the data frame and the target receiver. If the network utilization is over 40%
and the collision rate is over 10%, the industrial switch can help you solve a
few problems. Industrial switches with 100Mbps fast Ethernet and 10Mbps
Ethernet ports can run in full duplex mode and can establish dedicated 20Mbps
to 200Mbps connections.
2. Similarities and differences between Industrial
4G Routers and Industrial Switches
Similarity
(1)
"Exchange" is a word with a wide range of meanings. When it is used
to describe the devices in the second layer of data network, it actually refers
to a bridging device; When it is used to describe the third layer of the data
network, it refers to a routing device. That is, both industrial switches and
industrial 4G routers can be used to exchange network devices, but at different
levels.
(2)
Internet access. It's all about extending the network.
Differences
(1)
The first industrial switch worked at the OSI/RM open architecture's data link
layer (layer 2), while the 4G router was
initially designed to work at the OSI model's network layer. Since the
industrial switch works at the OSI layer 2 (data link layer), it works simpler,
while the industrial 4G router works at the OSI layer 3 (network layer), which
yields more protocol information, and the industrial 4G router makes smarter
forwarding decisions.
(2)
Different industrial switches based on different objects for data forwarding
use physical address or MAC address to determine the destination address for
data forwarding. Industrial 4G routers, on the other hand, use the ID Numbers
(i.e. IP addresses) of different networks to determine the addresses for data
forwarding. IP addresses are implemented in software that describe the network
on which the device is located, and sometimes these third-tier addresses are
also known as protocol addresses or network addresses. MAC addresses are
typically hardware-owned, assigned by network card manufacturers, and have been
solidified into network CARDS, which are generally immutable. IP addresses are
usually assigned automatically by the network administrator or the system.
(3)
Traditional industrial switches can only divide the conflict domain and cannot
divide the broadcast domain. Industrial 4G routers can segment broadcast
domains. A network segment connected by an industrial switch still belongs to
the same broadcast domain, and broadcast packets are spread across all network
segments connected by an industrial switch, in some cases leading to
communications advocacy and security vulnerabilities. Network segments
connected to industrial 4G routers are assigned different broadcast domains,
and broadcast data does not pass through industrial 4G routers.
Although
the industrial switch above the third layer has VLAN function and can divide
the broadcast domain, the communication between sub-broadcast domains is not
possible, and the communication between them still needs the industrial 4G
router.
(4)
Industrial 4G routers provide firewall services, which only forward packets of
specific addresses, do not transmit packets that do not support routing
protocol, and the transmission of target network packets for knowledge, thus
preventing broadcast storms.
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