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

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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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23 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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15 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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8 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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21 views

100mBit switch traffic greatly degraded - dropped packets over gigabit network

We currently run a network in our office using mostly Gigabit switches: a main 16 port unit at our server room and a second 16 port in a network closet on the main floor. We have a 100mbit switch by ...
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10 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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2answers
6k views

Can ping device from one computer and not the other

I've recently been assigned to work on a diagnostic program done in C++ which communicates with a piece of electronic equipment. Our normal scenario involves communicating via an RS232 interface, but ...
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1answer
17 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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1answer
36 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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1answer
34 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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2answers
7k views

Is there a switch that will connect directly to my modem and allow my router to serve only as a WiFi connection?

Details Devices Internets -50Mbps Cable Internet Modem - Motorola Surfboard Extreme Router - Netgear WNDR3700v3 Switch - D-Link DGS-1008G Wired Ethernet Cable - Cat6_24Awg_ Device Configuration - ...
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0answers
108 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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1answer
22 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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1answer
43 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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13 views

Setup multiple routers with switch [duplicate]

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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37 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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1answer
68 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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1answer
85 views

How can I switch windows on a timed basis

I would like to have one window maximized for X minutes, then have it switch to another window ad infinitum (Windows 7/2008 R2). How can I accomplish this?
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1answer
49 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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3answers
62 views

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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2answers
427 views

Daisy chaining PoE switches for IP security camera system

I have a fairly large (for me) security camera system to install and the cost of cabling is keeping this project cost prohibitive. I'll outline what I'd like to do, and welcome comments on the ...
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3answers
13k views

Can I split one ethernet line coming out of my wall into multiple separate lines?

Hi all and thanks in advance. I'll start with some background. I live in an apartment which provides internet service included in the rent. They use company called pavlov for the internet ...
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4answers
2k views

2 WAN to LAN, What router do I need?

I did CCNA a long, long time ago at school, and now I need to use it. But as you know, you forget things quite easily when not using them. :P Ok, I need a router that is able to be connected to 2 WAN ...
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1answer
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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1answer
35 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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320 views

cannot connect to OpenWrt router via switch

(Copied from the OpenWrt forum, where it went from the visible pages without answer...) Dear all, a few days ago I set up a TP-Link TL-WR1043ND with OpenWrt Attitude Adjustment 12.09-rc1. The router ...
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19 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 ...
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43 views

Possible to route multiple networks through same Switch? [closed]

I am not sure if I phrased this question correctly so I drew it out as best as possible My dilemma is I am on a budget and Nano/Booksize PCs with dual RJ45 connections are twice as much as the lower ...
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2answers
55 views

Switch after Router seems to create own subnet

I have a Router (Easybox 802) connected to the Internet. It has sockets for LAN-cables and a wifi-antenna. One socket of the router is connected to a switch (netgear fs605 v2) in another level in the ...
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2answers
75 views

Adding a switch hangs my network

In my current setting, I have a Cisco EPC3982AD router running it's own DHCP server, and handing out addresses on the 192.168.150.X subnet to machines connected to it, on the LAN interfaces. In the ...
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4answers
64 views

Would a switch be covered by a router's firewall

I need more Ethernet ports on my home network. Sadly, we already have an old router connected to the main router and we still need more ports. Would the devices connected to the switch be ...
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18 views

(Un)managed switches (R)ARP tables size?

The question in short : What is the address storage capacity of (un)managed switches nowadays ? Or does it not matter anymore ? Question in long : I remember that back in 2005 you had to make sure ...
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118 views

NAS can't connect via switch but works directly on router

I own a WD MyCloud 3TB and a TP-LINK TL-SG1005D Switch (10/100/1000Mbps 5-Port Gigabit Desktop Switch) as well as a Linksys X3000 Modem-Router. If I attach the NAS to the router it connects without ...
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1answer
37 views

Router as switch between wall and main router

Here is the situation: I have an old SMC router that I want to configure as a switch (or bridge, I'm not sure what it would be...) to act as a device that is connected to the internet outlet in the ...
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8answers
18k views

How to disable Windows system sounds - permanently - but not application sound

I prefer the sound scheme of Windows 7 HP to be set to "No Sounds" ALL the time. The problem is, when I switch themes, the themes switch sound schemes also. I know I can go in and disable/change to ...
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1answer
38 views

Connecting to a computer on a switch from a computer directory from router

So I have 3 Computers: Computer 1: Connected Directly to router. Vendor: Cisco, Model: DPC3939 Computer 2: Connected to switch. Vendor Dynex, Model:: DX-E401 Computer 3: Connected to switch. Vendor ...
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1answer
170 views

IPTV and NET over one cable - VLAN

My scenario: House with 2 floors. 1st floor equipment: ONT (fixed on this floor) - with four ports - three for IPTV and one for Internet Netgear Switch GS105E NAS (fixed) Computer (fixed) ...
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1answer
82 views

Monitor switch traffic load on specific port (CISCO managed switch)

For troubleshooting networks problems I need to know how to monitor the traffic (work load) on a managed switch. I read about SPAN for CISCO switches. But it seems to be overkill since it does mirror ...
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1answer
26 views

Make CISCO RVS4000 into hub mode

I am trying to do packet analysis with a RVS4000 Cisco device that has four computers connected. The device is not broadcasting packets to the other devices connected to the device. For my lab, I ...
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3answers
36 views

can I use eth0 interface to connect to two different networks

I'm using Ubuntu on PC. I have switch with 5 ports, and Rasberry. how can I connect to raspberry via eth0 using static network (192.068.0.0/24) and in same time connect to internet using another ...
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2answers
23 views

Can just modem + hub distribute internet to the computers without router?

As I asked in question header, without router can we share the internet with modem+hub or modem+switch?
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1answer
84 views

Router as VLAN broker bridge on single managed switch?

Will the network configuration below work? [ 8-port Managed Switch ] VLAN_1: Port 1 = Cable Modem VLAN_2: Port 2 = Router WAN VLAN_3: Ports 3-8 = Other Can the router on VLAN_2 broker between the ...
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0answers
93 views

Cant get Vlan to work on tomato shibby (AP)

Im setting up a small network. The hardware used is: HP 4330s with pfsense( As a router ) -> Broadcasting vlan1000(Admin) and vlan1001(Guest) Zyxel gs1900-24e (Switch) Asus RT-N66U firmware replaced ...
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1answer
47 views

Multiport connection between home router and switch for better LAN bandwidth

I have quite a few GigE devices at home that I’d like to have better LAN speed between them, but at the moment, all I have available are 3 ports on my (GigE) FTTH router (It has 4 but can’t use one of ...
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2answers
1k views

Multiple switches - how does it work?

I was reading about networking hardware some time ago and came across an explanation on how network switches work - basically, it said that a switch keeps an internal database of what MAC address is ...
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Where does the OS fetches the MAC address before encapsulating frames?

packet arrives from application->...Network->(IP encapsulation added here as per IP configuration)->goes down to Data Link Layer Here the Framing is Done and SourceMac and Dest Mac is added for LAN ...
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2answers
45 views

How can I separate networks so users can only see computers in their own department? [closed]

With 5 different departments, I want people to see and ping only one's department computers. 60 computers are connected in LAN environment through various switches, routers and one Cisco Managed ...
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1answer
30 views

Can we build a network switch chip by ourself? [closed]

Looks it it simple enough - just forward package to other port. I am wondering if is possible to build it on some common ARM SOC. Didn't need care about the speed or advance feature.
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4answers
127 views

Is a switch just a simple router?

A switch connects computers together. As an example we set up a switch to create a network. When computer A wants to speak to another computer B, it sends the packet to the switch (it has the ...
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175 views

10/100Mbps router overwhelmed by Gigabit switch & its devices?

I believe I've got the scenario outlined in this SU answer, where my 10/100Mbps router is being overwhelmed by a Gigabit switch and the devices connected to it. This comes into play with frequent ...