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

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Connect 2 computers to internet (1 ip) via switch

How to connect 2 computers to internet with a switch if ISP gave me 1 IP? Obviously, if I set the same IP on both PCs, one of them will not connect. Both computers are running Windows 7 (but answers ...
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51 views

Port forwarding on a slave router

I'm having a little struggle with the situation below. First I'll explain the basic setup which used to work: Wireless 4-port LAN router from the internet company Static IP for an IP Camera NAT port ...
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31 views

Dual wifi router setup

Can I use a gigabit ethernet switch plugged into my cable modem and then plug two different wifi routers into the switch. I want to use my new high speed router to always go through my VPN and my old ...
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3k views

Cisco switch Link status Up, Protocol down

I just bought a Cisco 3750X switch and when I did a sh ip int brief command, I see that my TE1/1/1 interface (it's a 10G port) has status up but protocol down. Right now, this 10G port is connected ...
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38 views

Why would a layer 3 switch ever need more switching capacity than all ports full-duplex?

I've read a few different places about switching capacity etc. From these items I've learned that in order for a switch to be non-blocking, the switching capacity of said switch must be double the ...
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643 views

Simultaneously switch tags as one screen in multi monitor setup

Just got setup with Awesome, after initial what-on-earth-is-this-thing confusion, I find myself liking it ;-) One issue that I'm struggling with is a feature that many likely prefer in a multi ...
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1answer
604 views

What happens if an unmanaged ethernet switch is looped (connected to itself)?

I don't know much at all about networking, and I when I tried to find an answer to this online I found someone who posted a one sentence answer saying "It would cause lots of broadcasts and ...
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1answer
1k views

Multiple Netgear GS608 V2 Problems

My network consists of: Netgear DG834N ADSL Modem (4 port) Connects to... Netgear GS608 V2 8 Port Switch This has 1 PC & a NAS drive connected to it. It then has a Cat6 cable connecting it ...
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1answer
32 views

Checking RAM on a Cisco device

When you do the "show version" command on a Cisco networking device you get some basic software and hardware information, including the amount of RAM which is shown like this: ...
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26 views

Trying to connect two computers to a switch, but I get “cable unplugged” in the second one

I have a modem-router, and I connected a switch to it. Then I connected a machine running Fedora 20 to the switch, and it said "cable unplugged". Restarting various services didn't help. Then I ...
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1answer
73 views

Two Devices, Same Subnet, No Communication

This is a stripped down version of my home network, and my problem is I can not get 192.168.20.100 to communicate with 192.168.20.4. The workstation pings both routers and the server fine, and ...
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46 views

Why do hubs and switches receive on pins 1 and 2 and transmit data through pins 3 and 6 of their cable?

Is there any reason they couldn't have been made to use the same pins as NICs and routers for transmitting and receiving? I had trouble finding any information about this through Google, so I hope you ...
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116 views

Will connecting two hubs with two cables help for performance?

I have two 1 GBit hubs and I wondering if connecting them with two network cables help for network performance? Here is example: I have switch A and B. I have 4 computers, A1 and A2 which are ...
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1answer
46 views

Would switching to this network setup help balance the load on my main router?

I currently am set up like this: My routers my second and third router are connected to the main via Static IPs outside the main router's DHCP range. Routers 2 and 3 have DHCP disabled (so the main ...
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1answer
337 views

How do I “manage” a HP ProCurve 1400-24G switch?

I'm confused about my switch. I bought it used so I only have the switch itself, no manuals. I've searched for documentation online and some sources say it's a "managed" switch while others don't ...
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3answers
64 views

Determinte Switch IP/Linux

i'm trying to determine the ip of the network switch several linux boxes are plugged into. Background: i need to know in which physical port they're plugged in, so the machines automatically detect ...
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1answer
26 views

read switches usually in while loop

I want to know the usage of read switches with some good examples. as instance I know about -t -s -p switches: -t: he -t option followed by a number of seconds provides an automatic timeout for the ...
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51 views

VLAN network configuration

I got a question about networking stuff :D ok my setup is a Summit24(SW1), a Summit48(SW2) and a BlackDiamond(BB) all switches are from extreme networks. In SW1 I set up a vlan with the Port 1 as ...
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48 views

What features to look for in a switch?

I work at a small engineering company and we run simulations on 3 different computers, which read and write a large number of files onto a 4th computer. I hadn't run the simulations in a while, and I ...
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65 views

Vlan with multiple switches

I have an Asus rt-N66U with Tomato 1.28 115-EN. My goal is to separate wired and wireless traffic, so what I would like to do is attach this router with two HP 24 port managed switches. So I have ...
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4answers
237 views

Why doesn't it matter which ports I use on a switch?

The electrical engineer in me says "use any port" it doesn't matter. Gut instinct wants me to put the router's cable right in the middle. Ultimately, the router went to Port 1 at one end of the switch ...
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1answer
116 views

Repurposing old router as switch and/or AP causes other users to suffer increasingly horrible web page load times - is this normal/fixable?

I read through a number of threads regarding switches prior to posting this and couldn't seem to locate an answer. The setup: Time Warner Cable, to support their 50Mbps connection, provides an ARRIS ...
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2k views

VLANs setup via untagged hybrid ports on ProCurve switch?

Is this a path to set up VLANs in my small office with a hp V1910 series ProCurve switch? ... and what am I missing? The network is /24, so all IPs are in the same 192.168.0.X subnet. The switch is ...
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1answer
49 views

Force client to use specific Lan port to connect to server

Newbie question: I have a NAS box connected to my gigabit ethernet Switch, the same NAS box is also connected to a 100mbps router switch to connect to the internet. The client users are wirelessly ...
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74 views

3com OfficeConnect 8 port switch freezes/crashes?

I have some old 3com OfficeConnect 8 port switches. I have two of them, switch A and switch B, connected together and some hosts connected to the ports of both switches. When I let a host on switch A ...
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72 views

Inter server connectivity getting lost after applying Cisco switch configuration

I have 2 Redhat servers in cluster. The eth0/eth2 ports on both servers are in bond0(which is assigned IP). The eth0 and eth2 from server1 are physically connected to giE0/3 on switch1 and 2 ...
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63 views

Turning an old router in to a swich

I'm playing with the idea of turning an old router which lying around in to a switch and attaching this to my current router. It's not so much because I need the extra ports, mainly because I am quite ...
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101 views

169.254.x.x with a switch connected to a CGN3 modem gateway?

I have a CGN3 modem (Rogers) connected to a TP Link switch. This was working for many months but it has stopped working. Now, PCs get assigned 169.254.x.x when the switch is connected. Connecting ...
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1answer
87 views

cisco vlan: can a trunk port talk to an access port under the same vlan?

Let's say we have a trunk port A with native vlan 2, access port B with vlan 2. When A send an untagged frame to B, can B receive it? When A send a tagged frame with vlan id 2 to B, can B receive ...
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3answers
241 views

Sharing internet from a Router to Switch

We have a TP-Link (TD-W8951ND) Modem Router : Internet Connection from BSNL, India. D-Link DES-1024D 24-Port Switch : 16 Computers connected and we have a local site running which will be accessed ...
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1answer
713 views

Home Networking: Connecting a switch to a router

I have the following network setup: EE Fibre going to a BT Infinity modem. EE Brightbox router, WAN port connected to the EE Modem. Port 1 connected to a Netgear Gigabit Switch 8 Port Netgear GS308 ...
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What will happen if a bridge got a wrong mac record?

Let's say there is host H1, H2, switch S1 S2, and S3, bridge B1, B2. It is connected like this: H1 - S1 - B1 - S2 - B2 - S3, | H2 H2 is sending frames to H1. Then, ...
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Is the idea that a switch is a multiport bridge accurate?

I think there are at least 3 differences: switches don't allow multiple mac addresses belonging to each port Switches don't use the fast spanning tree and use different management mechanism switches ...
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70 views

Connect server through switch on local network

What I am trying to do is to connect two computers together through switch. First computer is with Win8 OS. Other is Ubuntu Server 12.04 OS (apache webserver). I am connecting them with LAN cable ...
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336 views

Wake-on-LAN stops working after a few hours

I have a Linux server (Ubuntu 12.04.03) which serves as the internet gateway for our LAN of about 15 PCs. That is, eth0 on the Linux server is the Internet, and eth1 plugs into an unmanaged switch (a ...
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1answer
118 views

How to send the IP of a router from another via dyndns?

I have a main ZyXEL router with integrated modem so it is connected to the ISP directly via ADSL. I have a DVR in LAN1 and I want to access it remotely via Internet. I configured everything, set the ...
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3answers
948 views

When connecting two switches, should I use normal switch ports or the SFP ports?

I have two 48 port gigabit Netgear switches with 2 SFP ports each (I also have two Mini-GBIC copper transceiver modules) Is it best to set the ports up by using the built in ports (i.e. plug port 1 ...
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2answers
480 views

Does a switch know the mac address of other port of a bridge?

Let's say we have switches A and B, they are connected by bridge C. Does A knows about the mac of nics connected to B? Is it true that every time when nic on A want to send a frame to nic on B, the ...
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1answer
42 views

Does a network bridge maintain the topo a bridged lan?

As the title suggest. Let's say we have switch A, B, C and A connect to B with bridge D, and B to C with E. A <--> D <--> B <--> E <--> C Does D know the mac of nics ...
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1answer
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How does an ADSL modem tell which local client to associate with each response from a server?

Does an ADSL modem generate a random string for each request I make and when response comes it directs it to my computer (but not to my phone)?
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6answers
462 views

On a switched network, why do unicast packets not addressed to me reach my NIC when I'm in promiscuous mode?

When I'm connected to a switch, the switch knows which MAC address belongs to which port. So even when I'm in promiscuous mode, why do I receive unicast packets that are addressed to other MAC ...
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1answer
76 views

Connect a router to a switch to use wifi

My laptop is connected to a switch (more then 24 pc) with a wire. I would like to be able to use my laptop everywhere. I bought a wireless router (d-link) and connected the wire to the wan port, but ...
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2answers
121 views

What are OSI model layers! Are they tangible?

I know about all layers and their functions. BUT, how to interfere with/use them? I read that each layer adds its own data, are there 7 layers built into my router/switch ?
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2answers
9k views

How do I find the addresses of other HP switches in my network?

I'm trying to find the IP of a switch, in order to set it to factory defaults. I heard there's a command for HP Switches to find all surrounding HP Switches. What is it?
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batch to telnet does not return to batch

Will run the first completely, show connection to host lost, then stop at cmd prompt and not execute the second, etc. Example: telnet login username enable password copy running-config tftp: exit ...
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1answer
37 views

Is it possible to connect two uswitches using more than one cable?

In theory (I have not successfully tried it yet), you can bind two ethernet interfaces and make them act as one (sharing/balancing the load) in linux machines, (theoretically) doubling the speed. I ...
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1answer
48 views

Computer wont turn on immediately

Having an issue with my stack, I'll try to describe it as best I can. Was hoping for some advice from you kind people. I turn off my computer normally every time I shut it down, no programs running ...
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70 views

how to connect to WAN through wireless network router

I'm currently using TL-WR841ND with firmware version V8_130506 to connect to internet using the setting in this picture by using a LAN wire provided by my ISP in my router's WAN Port: I have been ...
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2answers
120 views

How does a switch forward two different IP addresses?

Comcast allows the home user to buy a second IP address. I bought a Cisco switch (I don't know whether it's Layer 2 or Layer 3) based on some advice I got. One port of the switch is connected to my ...
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Windows 8.1 Program switches to desktop

I've got some weird issue happening since I installed Windows 8.1 when it officially came out. Every day, approximately within 10 minutes after boot of the system, the program (in all cases so far ...