If a family has two or more computers that need to share a network, it is very likely that they will need to use a switch to complete it. To set up a LAN, a switch is an indispensable device.
Switch connection method
There are three main ways to connect switches: cascading, stacking, and clustering. These three kinds of connection methods are not only different but also connected. The cascading method is simple to implement. Only one ordinary twisted pair cable is required, which saves costs and is basically not limited by distance. The investment in the stacking method is relatively large and can only be connected within a short distance, which is difficult to achieve. The cluster connection method is to manage multiple interconnected (cascaded or stacked) switches as a logical device. Cascading and stacking are prerequisites for implementing clusters. Clusters are used for cascading and stacking; cascading and stacking are implemented based on hardware; clusters are implemented based on software; cascading and stacking are sometimes similar (especially cascading and virtual Stacking), sometimes very different (cascade and real stacking).
The stacking mode has better performance than the cascaded mode, and the signal is not easily depleted. In addition, stacking can manage multiple switches in a centralized manner, which greatly reduces the management workload. If you really need to use cascading, you can also use the Uplink port. Connection method. Because this can guarantee the signal intensity to the greatest extent, if it is the connection between ordinary ports, it will certainly make the network signal seriously damaged.
First, the cascade switch
This is the most common way to connect multiple switches. It connects through the Up Link on the switch. It should be noted that the switches cannot be cascaded without restrictions. Cascading over a certain number of switches will eventually cause broadcast storms, which will lead to a serious drop in network performance. Cascading is further divided into using ordinary port cascading and using Uplink port cascading.
Cascading using ordinary ports So-called ordinary ports are connected through a common port of the switch (such as RJ-45 port). At this time, the twisted pair used to use anti-twist, that is, twisted pair of the two ends of the jumper (the first 1-3 and 2-6 pin swap).
Uplink port cascading In all switch ports, an Uplink port is included next to it. This port is provided exclusively for upstream connections. Simply connect the port to a port on the other switch except for the "Uplink port" through a straight-through twisted pair (note that it is not the Uplink port that is connected to each other).
Second, the switch stack
This type of connection is mainly used in large networks where port requirements are relatively large. The stacking of switches is the quickest and most convenient way to expand ports. At the same time, the bandwidth after stacking is several-tenths of the speed of a single switch port. But not all switches support stacking, depending on whether the switch's brand or model supports stacking. It is mainly connected through a dedicated connection cable provided by the manufacturer from the "UP" stack port of one switch to the "DOWN" stack port of another switch. All switches in a stack can be managed as a single switch.
Stacked switches are limited by the type and mutual distance. First, the stack switches must support stacking; in addition, the stacked connection cables provided by the manufacturer are generally around 1M, so the stacking function can only be used within a short distance.
Third, the switch cluster
In the so-called cluster, multiple interconnected (cascaded or stacked) switches are managed as a logical device. In a cluster, there is generally only one switch that functions as a management switch, which is called a command switch. It can manage several other switches. In the network, these switches only need to occupy one IP address (only required by the command switch). Under unified management of the command switch, multiple switches in the cluster work together to greatly reduce management intensity.
It should be noted that different manufacturers have different implementations for clusters, and generally manufacturers use proprietary protocols to implement clusters. This determines the cluster technology has its limitations. Switches of different manufacturers can be cascaded but cannot be clustered.
Switch connection method
There are three main ways to connect switches: cascading, stacking, and clustering. These three kinds of connection methods are not only different but also connected. The cascading method is simple to implement. Only one ordinary twisted pair cable is required, which saves costs and is basically not limited by distance. The investment in the stacking method is relatively large and can only be connected within a short distance, which is difficult to achieve. The cluster connection method is to manage multiple interconnected (cascaded or stacked) switches as a logical device. Cascading and stacking are prerequisites for implementing clusters. Clusters are used for cascading and stacking; cascading and stacking are implemented based on hardware; clusters are implemented based on software; cascading and stacking are sometimes similar (especially cascading and virtual Stacking), sometimes very different (cascade and real stacking).
The stacking mode has better performance than the cascaded mode, and the signal is not easily depleted. In addition, stacking can manage multiple switches in a centralized manner, which greatly reduces the management workload. If you really need to use cascading, you can also use the Uplink port. Connection method. Because this can guarantee the signal intensity to the greatest extent, if it is the connection between ordinary ports, it will certainly make the network signal seriously damaged.
First, the cascade switch
This is the most common way to connect multiple switches. It connects through the Up Link on the switch. It should be noted that the switches cannot be cascaded without restrictions. Cascading over a certain number of switches will eventually cause broadcast storms, which will lead to a serious drop in network performance. Cascading is further divided into using ordinary port cascading and using Uplink port cascading.
Cascading using ordinary ports So-called ordinary ports are connected through a common port of the switch (such as RJ-45 port). At this time, the twisted pair used to use anti-twist, that is, twisted pair of the two ends of the jumper (the first 1-3 and 2-6 pin swap).
Uplink port cascading In all switch ports, an Uplink port is included next to it. This port is provided exclusively for upstream connections. Simply connect the port to a port on the other switch except for the "Uplink port" through a straight-through twisted pair (note that it is not the Uplink port that is connected to each other).
Second, the switch stack
This type of connection is mainly used in large networks where port requirements are relatively large. The stacking of switches is the quickest and most convenient way to expand ports. At the same time, the bandwidth after stacking is several-tenths of the speed of a single switch port. But not all switches support stacking, depending on whether the switch's brand or model supports stacking. It is mainly connected through a dedicated connection cable provided by the manufacturer from the "UP" stack port of one switch to the "DOWN" stack port of another switch. All switches in a stack can be managed as a single switch.
Stacked switches are limited by the type and mutual distance. First, the stack switches must support stacking; in addition, the stacked connection cables provided by the manufacturer are generally around 1M, so the stacking function can only be used within a short distance.
Third, the switch cluster
In the so-called cluster, multiple interconnected (cascaded or stacked) switches are managed as a logical device. In a cluster, there is generally only one switch that functions as a management switch, which is called a command switch. It can manage several other switches. In the network, these switches only need to occupy one IP address (only required by the command switch). Under unified management of the command switch, multiple switches in the cluster work together to greatly reduce management intensity.
It should be noted that different manufacturers have different implementations for clusters, and generally manufacturers use proprietary protocols to implement clusters. This determines the cluster technology has its limitations. Switches of different manufacturers can be cascaded but cannot be clustered.
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