Switch Usage in the Core Network, Need for Explanation
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brupala Posted messages 111938 Registration date Status Membre Last intervention -
brupala Posted messages 111938 Registration date Status Membre Last intervention -
Hello,
I am currently doing an internship, and my internship supervisor asked me to find out how to use a core network switch. I understand the principle of the core switch, the one that is connected to the server, but how do we use it?
I have searched a lot, but I haven't found anything.
Thank you
Best regards
I am currently doing an internship, and my internship supervisor asked me to find out how to use a core network switch. I understand the principle of the core switch, the one that is connected to the server, but how do we use it?
I have searched a lot, but I haven't found anything.
Thank you
Best regards
3 réponses
Hello,
a core network switch is not a regular switch.
It is generally used to interconnect other switches known as aggregation or access switches.
It needs to be highly reliable, since without it often everything stops.
Therefore, it is often a chassis with dual power supplies and dual CPUs.
Even more often,
the core network consists of two interconnected switches that work in parallel, with each one capable of handling all the traffic in case of failure or downtime for maintenance of the other.
Access switches and servers are often connected in dual attachment (one link to each core) to maximize reliability.
Here is a representation of such an architecture:
In this case, the core refers to the 7018.
We don't have to use Nexus ;-)
and ... there you go!
a core network switch is not a regular switch.
It is generally used to interconnect other switches known as aggregation or access switches.
It needs to be highly reliable, since without it often everything stops.
Therefore, it is often a chassis with dual power supplies and dual CPUs.
Even more often,
the core network consists of two interconnected switches that work in parallel, with each one capable of handling all the traffic in case of failure or downtime for maintenance of the other.
Access switches and servers are often connected in dual attachment (one link to each core) to maximize reliability.
Here is a representation of such an architecture:
In this case, the core refers to the 7018.
We don't have to use Nexus ;-)
and ... there you go!
Hello,
A switch located at the heart of the network is a switch to which the servers (which may themselves be connected to other switches) and the user PCs are connected, allowing for the global interconnection of the network.
In short, the PCs are connected to the servers via this switch.
You can help yourself by creating a diagram in Visio to get an overall view of the principle.
Feel free to ask if you have any other questions.
--
Best regards, Romain.
A switch located at the heart of the network is a switch to which the servers (which may themselves be connected to other switches) and the user PCs are connected, allowing for the global interconnection of the network.
In short, the PCs are connected to the servers via this switch.
You can help yourself by creating a diagram in Visio to get an overall view of the principle.
Feel free to ask if you have any other questions.
--
Best regards, Romain.
The principle of a switch is to route the received packets to their destination and only their destination, unlike a hub. Managed switches allow the use of VLANs and many other options (VLANs are frequently used in a corporate network). It is just a routing component, so there isn't much to elaborate on this.
For VLANs
The key points to remember are:
- There are different types of VLANs (Port, MAC address, Protocol, etc.)
- They allow for virtual segmentation of cabling (in a company, one can separate managers from regular employees)
- Security, as there will be multiple layers to pass through
- Several advantages, such as increased bandwidth, management of broadcasts, etc.
I wanted to know if there were any other important things I might have forgotten...
Thank you
The key points to remember are:
- There are different types of VLANs (Port, MAC address, Protocol, etc.)
- They allow for virtual segmentation of cabling (in a company, one can separate managers from regular employees)
- Security, as there will be multiple layers to pass through
- Several advantages, such as increased bandwidth, management of broadcasts, etc.
I wanted to know if there were any other important things I might have forgotten...
Thank you
Instead of concentration switch, one can also talk about access switch or distribution switch, although in large structures, distribution is rather an intermediate level between core and access.