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Questions tagged [switch]

a device that bridges network segments, operating at the OSI link layer level.

Switches (in the context of this site) are devices with multiple network ports, which allow interaction between all devices connected to these ports.

Basic switches operate at the data link layer level (in TCP/IP networks) and forward packets based on the link layer address in the packet headers. They are different to hubs in the way that hubs generally broadcast incoming packets to all other ports, whereas switches keep tables of link layer addresses they have seen at specific ports and only forward packets to the relevant ports. Basic switches are also known as layer 2 devices.

Higher grade switches can include functionality at higher layers of the OSI stack. This can range from IGMP snooping (for multicast support) and VLANs through to NAT, VPN, firewalls or even application layer functionality (web caching or proxying). Such switches are known as multilayer devices.

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Routing between Vlans on layer 2 switch and Cisco router

Hi I'm quite new to networking and need some help with a home configuration... I have an 8 port TP-Link SG3210 layer 2 802.1Q tag capable switch and a Cisco 1801 router. I set up 3 Vlans on the switch and assign ports to each. I want to make…
ATtheincredibleaf
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I have a firewall that supports 1Gbit ethernet ports but 1.4Gbit of traffic, can I make use of a 10Gbit pipe from the router in this case?

We're putting up a rack of servers in a datacenter which provides us either a 1Gbit pipe or 10Gbit pipe from the router (our choice, our package includes 10Gbit). But if we have a firewall which supports 1.4Gbit of traffic, with 7x 1Gbit copper…
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Why are serial console ports on network switches 8P8C/RJ45 sockets?

It has always seemed a bit strange to me that the console ports on networking gear are 8P8C (popularly referred to as "RJ45" even though that's not strictly applicable here) connectors and require an adapter to connect to a DE9 serial port. What is…
tgies
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Access a test network from other network

I have four test computers connected together in a small test network (as shown below). Two of the computers are in ESXi and two physical computers. They are all configured with the same IP address used by the customer. The problem is that I want to…
magol
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All RJ45 lights blinking, slow network speeds

The switch is a Netgear GSM7248, we have three and all are flashing in unison. Any ideas?
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Webserver Layout

I would like some advice about a network layout for a medium company hosting a website/web service. Currently I have the following Layout in place...Network Layout I would like the private area (Green) for databases, and the public area (Blue) for…
Ziemer
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What type of rack is used to host Netgear and cisco routers and switches?

I'm a Masters student doing a project on how to design and deploy networks in an industry environment. Theoretically, I have 6 Netgear ProSafe fs750 switches and a Cisco 3750 24T-S switch and want to put them in a rack. Cost is a constraint because…
Nitin Khanna
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Best switch and firewall to use in a Data Centre Rack?

Can anyone offer any suggestions on the best switch and firewall to use with Dell PowerEdge servers that are co-located in a Data Centre Half Rack? I'm looking at potentially a Cisco ASA5510 Firewall with a Cisco SG300-20 Switch. Any…
TIW
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How to limit Bandwidth/DownloadSpeed of a computer?

My computer renters are consuming a lot of bandwidth, which cause some consumers to complain about low bandwidth. How could I balance the maximum bandwidth or the maximum download speed globally (all softwares in a computer, Orbit, all browsers,…
Cyril Horad
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anybody using D-Link xStack enterprise switches?

Is there anybody out there using D-Link's xStack enterprise switches ? I have run into some snags and would appreciate exchanging notes with other admins using the same switches. What kind of switch do you have and what have you used them for ?…
pdxpatzer
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Splitter switch with multiple network

With an increase in informatics insecurity in companies, I try to increase the security of my network, but I encountered a problem trying to set up my ideas. Right now, each person in my company is on their own computer, and there are some shared…
Partodiam
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Block unusual traffic from LAN on Switch

I was wondering if on HP Switches (2920 for example) is there something like storm control but for unicasts? Let's assume, we have a host in our network who bruteforces some random IP addresses. How to shut down this interface/MAC-Address? HP Switch…
Artur
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Please explain this traceroute

What might cause the middle two RTT to timeout. This happens every time. Users are reporting slow network access from the remote site. We have contacted Meraki and they have not found anything wrong. We have replaced cables. We have contacted the…
William
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Connecting iPad Pro to the internet via Ethernet

Okay, so you would think my client wanting to get an iPad online via ethernet would be simple and straight-forward way for me to earn $20. When I arrived, this is the setup I found: The iPad Pro (model MQDX2LL/A, with software version 14.4.1)…
Aleister Tanek Javas Mraz
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Setting the MTU of a virtual Switch on a qNAP NAS (QTSHero OS)

For a project that I am currently working for, I bought a QNAP NAS (TVS-h1288X). In that project, I have multiple network cameras. On the NAS, I have a Windows 10 VM which is supposed to store all the video recorded by those cameras. The traffic…
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