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0
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0answers
9 views

Can I use a VLAN to prevent naming conflicts from devices on the same subnet?

My scenario is this... I have a business where all of the devices are connected to two layer 2 HP switches that are joined by a static port team. All of the connected devices are on the same IP ...
0
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0answers
13 views

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 ...
0
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0answers
15 views

Identifying unknown switch in network

I have a managed switch and I want to identify an unknown switch that is connected to it.I have the MAC addresses of all the devices connected to it. how to identify which one is the switch?
1
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1answer
2k views

How to enable ip masquerading/forwarding on CentOS 7

I want to enable IP masquerading/forwarding on CentOS 7, but when I specify net.ipv4.conf.default.forwarding=1 in /etc/sysctl.conf, it doesn't work. Can any one help with this problem?
0
votes
1answer
123 views

Windows 8 - Prevent Transparent Windows when Hovering

Say you have several windows open. Maybe like 4 different Internet Explorer pages with several tabs in each IE window. You know how the icons are grouped on the taskbar, like one icon for similar ...
0
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0answers
96 views

Inter vlan routing through Layer3 switch vs Router

I am trying to understand a network configuration that I have recently inherited. I am trying to diagnose slow network speeds, internet latency, dropped packets... you name it, the network it kind of ...
5
votes
1answer
2k 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 ...
2
votes
0answers
55 views

In XOrg, can i switch keyboard-layout per application and still honor ~/.Xmodmap

I'm using my ~/.Xmodmap to map: keycode 38 = a A adiaeresis Adiaeresis and similar to be able to type German umlauts (äöü) on a US-qwerty layout. For switching keyboard layouts between German qwertz ...
0
votes
1answer
26 views

Computer goes haywire when connected to modem/router or switch, but not AP

I've got a really weird situation with one workstation on my network. Topology: Comcast Business class modem/router -> D-Link gigabit switch (192.168.42.0/24) -> Linksys EA6500 router/AP ...
0
votes
1answer
222 views

Instead of VTP , what protocol can be used for non CISCO switches?

I got to know that VTP (VLAN Trunking Protocol) is a Cisco proprietary protocol. So VTP can be used only on CISCO switches. So if there is a non-Cisco switch in a network, what kind of protocol can be ...
0
votes
0answers
95 views

Cascading KVM switches

I have a not-so-small number of computers (say, 5) which I want to access with a single keyboard, USB and monitor. I can get an 8-port KVM switch, which is a pretty expensive piece of hardware; ...
0
votes
1answer
587 views

Disable of discrete/native graphics on MacBook Retina when using apps like VMware, VLC, etc

I got a MacBook Pro Retina a few months ago and I'm really happy with it. However, since I do a lot of work in different environments/OSes, I make heavy use of VMware to have them with me when I'm on ...
0
votes
2answers
639 views

Is there software to switch between DVI and VGA input on a monitor?

I'd like to know if there is a way (software, a keyboard combination, etc) to switch between DVI and VGA input on the same monitor. I've two PCs connected to the same monitor, far away (80cm) from ...
1
vote
1answer
57 views

Switching Between Desktops does not Stick

I am using a MacBookPro and use the three-finger swipe gesture to move between desktops. However, this feature seems to stop working randomly. Interestingly though, when this happens, I am still able ...
0
votes
2answers
1k views

SFP Expansion Slots - Bad terminology or Bad understanding?

I'm doing a bit of product research for my company as we need to select a special use switch for an industrial customer which requires the use of both Ethernet and Fibre connectivity from the switch. ...
2
votes
1answer
4k views

Extract and overwrite existing files

I am trying to write a batch script to extract files out of an existing zip file, into another folder on my desktop and to have the system not prompt me as to whether I want to overwrite the existing ...
2
votes
1answer
741 views

Moving “Workspace Switcher” in Ubuntu Unity Launcher

I need the Workspace Switcher in Unity's Launcher at the very top just below Dash or Nautilus. I need this because when I run VirtualBox the commands CtrlAlt↑/↓/←/→ are not ...
0
votes
1answer
310 views

wireless networking: can wicd switch wireless cards automatically

I have slackware64 13.37 installed on my laptop, with wicd 1.7.0 as network manager. By default wicd connects using the internal wifi card. I have a much better usb wifi card that I would prefer wicd ...
3
votes
4answers
1k views

What is the security risk of using WLAN and LAN network on a computer at the same time?

We have a few older HP laptops that when docked in a port replicator the WLAN connection is disabled and the LAN connection is enabled. We have since replaced these with Toshiba R700s which do not ...
0
votes
2answers
583 views

Enabling Alt+Tab buffer switching like Windows or Firefox in Vim

How do I set up a buffer switch like Alt-Tab on Windows:? It cycles through a list sorted by last access first? So if I pressed Alt+Tab, I'd get the last accessed buffer. If I pressed it again, I ...
0
votes
2answers
156 views

Is it possible to share a big-screen monitor - switching between personal Windows 7 laptops in the office?

We use laptops & WiFi in the office. We often make demo to each other and need to show the demo on a big screen monitor hang in the middle of the room :). I want to switch the display between ...
7
votes
3answers
2k views

In Opera 11, how can I set up shortcuts to switch to specific tabs?

In Firefox on Linux, we can use Alt+1, Alt+2, etc. to switch to the first, second, etc. tabs, till the 9th tab. This is very useful to switch between tabs. In Opera 11 on Linux, I couldn't find a way ...
3
votes
2answers
2k views

Switch buffers in vim without saving to a currently modified file

Ok, I'm a vim user with the Minibufexl plugin which shows buffer tabs, I've mapped Shift+J and Shift+K to switch between tabs. One thing that frequently frustrates me is while editing a file, and ...
1
vote
3answers
78 views

Get multiple systems at once?

I heard that there are some programmes that allow to feel like you have 2 OS at once, that is to say, you can easily, without rebooting, switch between them. So I have the follwing question concerning ...