A network switch or switching hub is a computer networking device that connects network segments.

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Does a true Star Topology exist?

In Mike Meyers A+ CompTIA book, he defines a star topology as a network where all units connect to some central wiring point - I image many units connected to a switch. He then goes on to say that a ...
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what is fan in and fan out ratio for a SAN storage? [closed]

Try reading on google but can't find much information. q1) fan in and fan out ratio applies to hostserver or san storage ? q2) how does isci or fc port connectivity work ? is there a ip per ...
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28 views

Can running two cat 5e cables mprove speed between two routers?

I have a cable modem downstairs, with 120mbs connection. I have a router upstairs, about 100ft of cat5e cable away. The data rate there is about 50mbs. I added an ethernet switch about halfway, and it ...
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38 views

Is it better to have 2x 48 port switches or 4x 24 port switches in a network?

Short questions Is it better to run a large local network through either : A) run all cables back to 2x connected 48 port ethernet switches (with STP (required by Sonos)). or B) Run 4 x 24 port ...
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42 views

How are network switches configured remotely when they have no IP address?

A network admin can configure a network switch by connecting devices like a keyboard and a monitor to it directly using physical ports available on the switch. Like routers i think the option of ...
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21 views

Connecting two routers with device accessibility behind home cable modem

I have three routers [the wireless modem gateway, a linksys device which is in only switch mode, and another Linksys router which is in bridge mode] I have this setup: [cable modem] -> switch ...
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54 views

Network setup issue

I have two internet connection - one broadband connection of 8 Mbps and a lease line of 4 Mbps and CISCO 24 port switch, new dlink 600L router. Currently both this sources are plugged in Sonic fire ...
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20 views

Connecting router as a switch [duplicate]

In a home LAN, I have connected one router A (which is also connected to the Internet) to router B but router B is supposed to work only as a switch (I am not using the WAN port in router B at all). ...
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62 views

What happens if a switch loses too many packets consistently?

I was just wondering what happens if a switch loses too many packets. The reason I am asking is because I have a switch that is constantly overloaded. This is caused by individuals downloading heavy ...
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63 views

Possible network loop with WiFi and Ethernet when docked

I have been seeing a weird problem that I can't reproduce on demand and have a suspicion on the root cause. The Issue: Intermittently the entire network goes down until I walk around and unplug ...
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2answers
44 views

Easiest way to get wifi if signal is too weak [duplicate]

I want to get wi-fi internet access on a smartphone in a certain place. I have a switch there, it is connected by a 20 meters long network cable to a wi-fi router, the router is connected to the ...
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19 views

Share 1 hdd to PC and PS3

I have HDD connected to PS3 via USB. Is there any device to allow connecting this HDD to computer also? My goal is to have this HDD connected to both PS3 and PC and then on PC there supposed to be ...
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35 views

Can I use crossover with a gigabit switch to play games over LAN?

I was wondering if it was possible to use a switch to play games that use a LAN connection with my family. I know that the game I want to play works with a standard Ethernet cable from one Intel NIC ...
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2answers
35 views

How are mac address shared between initiater and target?

If there is a successful TCP/IP connection between two servers in internet layer and the source address and destination mac addresses are attached to the TCP/IP packets, then how are the mac addresses ...
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1answer
118 views

Network Hub to Hub - no network

I've set up a home network using hubs. I know it's best to replace hubs with network switches however the hubs were donated and it's not feasible to buy network switches. The setup consists of a hub ...
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47 views

How do I connect my D-Link DIR-605L wireless router to my TP-Link TL-SG2424P PoE switch?

We connect to the Internet via our D-Link DIR-605L wireless router. We just bought a TP-Link TL-SG2424P PoE switch to power our new VoIP phones and connect them together. (Our wireless router will ...
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21 views

Switch to switch connection

4 servers with 8 Ethernet connections Will it affect Network speed if I Mount a 16 ports Gbit switch in rack and connect one Ethernet cable from that swith to main switch with 30 computers connected. ...
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26 views

Network bridge - how to use them

Does/Can network bridges bridge 2 different network segments (with 2 different network/subnet mask) ? Or all the segments must be long to the same subnet in order to communicate ? What are the ...
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60 views

internet traffic slow through switch; VOIP issues too

There's already a post about this, but the solution to that one didn't work for me, so here's my version: We have Cox cable internet, 100mbps | We have a Sonicwall TZ 215w | We have a netgear L2 ...
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60 views

VLAN: Cannot connect to internet via AP mode

I followed the guide at http://kb.netgear.com/app/answers/detail/a_id/8898 in order to setup a VLAN on my network. Currently, one port is on VLAN 10, all the rest are on the default. If I plug a ...
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62 views

How to extend or to divide a network? [closed]

I try to understand the difference between the Switch, Hub , Bridge , etc ... But I did not really happen. In the event that I wish to extend my network or divide, what material should I use exactly ...
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5answers
87 views

Do routers act like switches when devices are connected to it by Ethernet cables or not?

In my networking class I learned that routers send data to all computers on the network, compared to switches that send data only to the MAC address that is needed. My question is if devices are ...
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How to connect network switch with ADSL broadband?

I have a ADSL broadband and I have connected two computers to that wired broadband using a network switch . But when I connect one computer to the internet and try to connect the other one , it does ...
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63 views

What is the difference between these 2 twisted pairs?

I have two cables marked: BELDEN 1583e utp cat5e 4pr awg24 iso/iec 11801 en50173 ec verified 100 ohm 1002069 ESSENTIAL utp cat5e by nexans EC verified 4pr awg24 lu0306 Both connected to TL-SG108E ...
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26 views

How do I set netflow collector on CIsco SG220 switch?

This is the first cisco switch that I am dealing with at home. Older, more consumer friendly, switch had simple way to specify netflow collector. Where can I set it up on Cisco SG220?
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71 views

VLANs, routing and DHCP

I've got my home network up-and-running to an extent, but I'm trying to improve the setup. On top of this, I'm using it as an exercise to try and learn the ins-and-outs of slightly more complicated ...
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27 views

Is it possible to have different subnet for different VLAN in a L2switch?

While creating the VLAN in L2 switch, is it possible for us to have diffetrent subnet for each VLAN? and for inter VLAN comunication can we use router(L2 switch)?
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52 views

DHCP packets broadcast on all ports on a switch?

I would like to monitor DHCP packets on a clientPC connected to a 4 port switch/router. Will i be able to see DHCP packets sent or received on clients connected to other ports on this switch as well? ...
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28 views

Are the rating of switches the total bandwidth for all communication or between any two ports

Let's say I have 4 computers on a gigabit switch. Is the switch's gigabit rating the speed for all connections added up or the speed between any two computers? For example if computer 1 was ...
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56 views

Static routing for static IP on a layer 3 switch

I'm trying to set a Layer 3 Switch (An HP v1910-48G) on my pension (we have around 30 computers). I've got a 6 IP range (4 IPs + 1 Gateway + 1 broadcast). I've created 3 VLANs: VLAN 001: It's a VLAN ...
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23 views

Switch connected to router. How to deal with port forwarding?

I have a dsl router which a 8 port switch is connected to it. If I connect computers to the switch how would I manage port forwarding in this setup? is it possible? would it be recommended in a ...
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165 views

Is 802.3az / EEE important for a network switch for structured cabling?

Please note: I am not asking for specific product reccomendations. I am in the process of expanding wired ethernet cabling in a building during a remodel. I currently have about 20 runs of CAT6a to ...
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65 views

UDP not forwarded through switch

I have a switch D-Link DGS-1210 with 52 ports. There is a device connected to the switch that shall be updated. The update requires a TFTP transfer between my PC and the device. Unfortunately the ...
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42 views

Connecting Router to A Switch

The reason I want to do this is because my school does not allow router to be set up in my dormitory. When I connect using a router the internet works just fine, but randomly it will disconnects (or ...
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44 views

ACL inter-vlan routing

I need to configure access control list on layer 3 switches for a some school's: Now the PC's from one classroom can access the PC's from the other classroom. How can I configure that they only can ...
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40 views

Trouble With Network - Apple Time Capsule & Cisco SG-300-10P

How can I setup my network to allow access to devices connected to the Cisco SG300-10P switch from my Apple Time Capsule? My current network setup Comcast Modem / Router --> Cisco SG300-10P ...
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48 views

How to work with DSCP values on a ( D-link dgs-1210-48)

I want to configure QoS on a D-link dgs-1210-48. The current configuration is that all values are low except the DSCP values 40 up to 46 It looks like this but only on my configuration the values 40 ...
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1answer
56 views

8 port router or 3 port router with 5 port switch

I just recently got my condo wired with 6 Ethernet ports. I was wondering is there any performance difference if I were to get either just an 8 port router and just connect everything to it vs if I ...
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57 views

topology for an unmanaged switch (firewall)

I'm considering an unmanaged switch. My understanding is that many of these devices explicitly lack a firewall. In that case, what do you use as a firewall? I suppose one option would be to use a ...
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41 views

Question about subnetting with switch

I have a setup which includes desktop pc, server pc(would also act as router), raspberry pi and ethernet switch (and possibly other devices if I get new switch). I would like to know if this ...
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1answer
24 views

Poor throughput to the internet but just fine locally.

I have a router (Linksys E4200) connected to the internet (via external modem) and connected to a Powerline (AV500) device. I have 2 computers connected as follows: Modem <-- 1GbE --> Router ...
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86 views

Setup Help with multiple routers

I'm trying to expand the wireless network in my church and am having some issues. I'm not a networking expert so I'd appreciate some input. Here's our setup: AT&T/Motorola Gateway (NVG589) ...
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440 views

How to turn off power/signal on a laptop HDMI port? (It triggers HDMI switch)

I have a automatic/intelligent HDMI switch . Automatic in the way that it always switch to the latest input that receives signals. I have connected a laptop (Windows 7, ati 4670 with official ...
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75 views

Verizon FiOS loses IP when multiple devices are connected via a switch

From my Internet router (Verizon FiOS) I have a cat 6 line that connects to an upstairs 8 port switch. From that switch, I’ve connected my Yamaha receiver and TV. This has worked for several years. ...
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119 views

Maximum Bandwidth through gigabit switch

This seems like a simple question, but I can't find a definitive answer for it. I have four devices connected to a Gigabit switch as in this diagram: Can I get the full GBit bandwidth from A-B ...
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Ping not working between two devices when going trough a switch with nothing else connected

(Apologies in advance if this is misplaced here. I'm trying to integrate a NAS into my network and have multiple problems. This is one of several questions that I'm planning to ask about this here.) ...
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105 views

Setting up Remote FTP server access via switch, router and modem

I'm trying to access my remote FTP server from a PC that is connected to our (Virgin) DSL modem via a switch (Netgear GS108PE). The switch is connected to a Router (Asus RT-AC68U) and that is ...
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37 views

Is there any defensive element for non-standard voltages on networks?

Assume that an attacker join to our network as a good person and we give him a cable that is connected to one of our switches. Now, If he connect the wires of that cable to a high voltage (60v for ...
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124 views

How Duplicate address is detected in lan for ipv4 networks

If i have two pc's connected to a switch , and i statically configure the same ip address on both the pc's, then how the pc's come to know that there is a address conflict (duplicate address) on the ...
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23 views

Why does my managed switch report a short in my cable? Is it accurate?

I'm using a Dell PowerConnect 2824 and it has a built-in Marvell Virtual Cable Tester. Is it accurate? It's reporting "Short Cable" on many of my cables that are working perfectly. However, two new ...