Server Fault Stack Exchange
Server Fault Stack Exchange

Questions tagged [router]

A device that connects two or more networks and is capable of forwarding data packets to a destination based on information contained within a packet and internal routing tables.

Routers are devices that connect networks and make decisions on where to send incoming data packets, based on the address information contained in the packet and internal routing information.

The most common form are SoHo routers, which connect home or small office networks to the internet and provide routing for all devices on the home/office network. More advanced routers connect large office networks, and at the high end of the scale routers connect large segments of telecommunication networks all over the world at high speed.

Routers are not limited to TCP/IP networks, they can be found in any kind of network.

2043 questions
5
votes
2 answers

What is a Cisco BVI interface? What is it used for?

I have been Google'd and searched for the answer to these questions, but I cannot find a simple answer. So my questions are about BVI interfaces. What are they? Why do you use them? In what scenario are they useful? I've searched through CCNA books,…
Inf.S
  • 153
  • 1
  • 1
  • 3
5
votes
10 answers

Very strange home router problem

For a long time now I've had a very strange problem with my wi-fi network at home. I have a BT Voyager 2100 ADSL modem and an iMac, ageing PowerBook and a PC that connect to it wirelessly. The problem is that I can never access a small number of…
John Topley
  • 2,175
  • 3
  • 16
  • 17
5
votes
6 answers

Need help diagnosing network performance issues

I am currently working in a developing country as a system analyst for a government department. My area of expertise is software projects, but I've come across a few issues with the network setup in my office. (Unfortunately, being a developing…
tokes
  • 216
  • 1
  • 6
5
votes
4 answers

How a router decides destination of packet?

I have a basic networking question. Two PCs are communicating on a WLAN. Both the PCs are behind routers or modems. Both the PCs have the same public IP. That public IP is most of the time is either of the router or of the modem. There can be more…
user58859
  • 518
  • 3
  • 8
  • 17
5
votes
6 answers

Router IP (Best Practice)

I learnt that routers shall have the last IP for the subnet, eg: 192.168.1.0/24 -> router IP shall be 192.168.1.254, and so on. But... why is this? Is this merely preferential or there is also other reason? Thanks!
Andre
5
votes
2 answers

Improving Skype quality

Every now and then I revisit the issue of shaping skype traffic. AFAIK Skype is notorious for ignoring most settings - incoming ports, proxies, etc so it is not possible to give special treatment to skype traffic - I guess the idea is to keep skype…
Unreason
  • 1,146
  • 1
  • 8
  • 22
5
votes
5 answers

Simple Quagga BGP router

We are attempting to setup a Gentoo Linux box to run a Quagga BGP router for our internet connection. We've tried many things, but everything we've tried results in Quagga reporting that there is no BGP network available and it never connects to the…
miquella
  • 250
  • 1
  • 5
  • 10
5
votes
5 answers

Unknown local router stealing DHCP requests

I am in charge of a local network in a dormitory, we have two 50-way switches and using them to connect to some remote router which is not administered by me (it is not in my building). Note: this is a legacy setup, I had no decision on how it is…
noname
5
votes
4 answers

Help me understand the 'ip route' command for cisco routers

I just can't wrap my head around it. For example: I want the left-most router to be able to ping my computers on the left and vice-versa. Where would I set up ip route and to what address. I feel like I'm just guessing and don't really understand…
Sergio Tapia
5
votes
4 answers

Is there anyway to connect to a Switch/Router console port with a RJ45-RJ45 cable?

Normally i connect to the console port with a RJ45 -> Serial cable. (Using a SerialtoUSB adapter if im in my notebook). But for curiosity... Is there any way to connect to a console port using a RJ45-RJ45 cable pluging it in my Ethernet Port,…
Wolfspaw
5
votes
9 answers

I need to setup a Guest wi-fi SSID so customers/clients can connect to the internet, what's the best way to do that?

What are the best options out there to be able to provide a guest wireless internet access so they can't see the rest of devices in LAN?, what's the best and also cost effective appliance that will do that?
Terumo
  • 185
  • 2
  • 2
  • 7
5
votes
5 answers

How to connect a switch to a wireless network?

We've got a wireless modem which I don't have direct access and now I need to connect 15 PCs to it. These PCs all wired and connected to my 24 port switch. Now how can I make my switch to connect this wireless network so all these 15 PCs can connect…
Karma Soone
5
votes
4 answers

How to properly nest a wireless router behind a wired router?

I wish to repurpose a wireless router to serve as a wireless access point behind a wired router (serving as gateway to WAN) so that I don't have to buy more hardware and recapture value on prior equipment investment. As far as I know, I should set…
bwerks
  • 752
  • 3
  • 10
  • 22
5
votes
3 answers

Cisco 877 as a VPN server?

I have a Cisco 877 router which connects my network to the Internet using an ADSL line, a single public IP address and NAT; the IOS version is 15. Everything is working ok, but I'd like to configure this router to be a VPN server, to be able to…
Massimo
  • 70,200
  • 57
  • 200
  • 323
5
votes
2 answers

IPv6 can I use a link local address as my default Gateway?

can I set the default GW to be the Link Local address of the next hop router. I understand this is a strange thing to do, I'm mostly wondering it is possible?
Arthur Ulfeldt
  • 3,249
  • 9
  • 33
  • 40
1 2 3
…
99 100