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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.

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Connect Multiple Networks Wirelessly

I have a home network using a router to connect computers both wirelessly and with network cables. I also have another separate network about 10m away from my home network that is networked via cables in a switch. Is there a way for me to connect…
ThreaT
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Connecting two routers via serial

I'm new to Cisco and I wanted to connect two routers with serial connection. This is how my network looks now: Maybe I connected them wrong because when I try to ping from PC0 to either PC2 or PC3 I get destination host unreachable on the IP of…
RidableCthulu
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Cisco 861 - Unable to traceroute

I'm having an issue with my Cisco 861. I'm unable to traceroute to any ip address from the router, even the next hop. Can anyone suggest possible causes. Apologies for the censoring but I won't take a chance posting IP's online version 15.2 no…
fir3x
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Ubuntu server router - only 50% of upload bandwidth

I've changed my internet connection to 400 mbps download and 400 mbps upload. Real speeds when computer connected directly to optical modem: 421/412 mbps for download/upload. My network structure is: Intranet <-> Router <-> Optical Modem And i…
Vital Belikov
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s/m business wifi access

At the moment my company is aiming to split offices. We are in a business park and remaining in the same building, this is only temporary, but several of us are moving into a smaller office about 30-50 metres away. In between this we have a kitchen,…
user1092809
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Physical Interface VS Multipoint Subinterface in Cisco Frame Relay

I am new in learning about Cisco Frame Relay. And I am having trouble in understanding the difference between using physical interface or multipoint subinterface, because it looks the same to me. Example in the topology below: All routers are in…
randms26
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access same subnet on different interfaces

I have a router with external (WAN connection) subnet 192.168.1.0/24 and also on same router a tunnel to a remote location which have the exact same subnet (192.168.1.0/24), and i need from my LAN to access the remote location computers ! I was…
THESorcerer
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Configuring DNS with router and BIND

Goal I am trying to setup a local DNS server here in our office. Problem Apparently Comcast has a loop-back so when we configured the domain to go to our IP it works outside of the office but inside it fails. Actions taken We decided to setup a…
ngreenwood6
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Port Forwarding From Second Router

I have the following setup at work, of which I'm impromptu in charge of: Internet(Modem) <-> Smoothwall (firewall/dhcp/nat) <-> Servers/PCs I need to be able to add a second broadband line in, preferable like this: Internet_1(Modem) <-> Smoothwall…
Dom
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what would happen when macchanger to gateway mac address?

I thought arpspoof GATEWAY_IP -t VICTIM_IP can be prevented by add a static arp entry on victim side, i.e. arp -s GATEWAY_IP GATEWAY_MAC I read https://superuser.com/questions/17696/what-happens-when-two-pcs-have-the-same-mac-adress, but i still…
林果皞
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DHCP wont release allocated IPs

I have a TP-Link td28151 router and I am using DHCP. I need to connect 40 devices to my router by Ethernet. I have set the count of my clients to 100, and my subnet mask is 255.255.255.0. I have previously connected 28 of my devices to my router and…
Behnam
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Giving an IP address outside the network to the router to safely make it a switch?

In our office, all machines use IP address 192.168.0.x with subnet mask 255.255.255.0, the network setup is as below: We only had routerA before. But since its wireless signal is too weak (much weaker than a typical wireless router), we decided to…
bobo
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Command "ip rule show" not showing anything

I try to list all routing rules, and as far as I know this should be accomplished with the "ip rule show" command. In my case there is nothing returned (really nothing at all). Why? Could it have to do anything with the "ip" tool being part of the…
Jan Z.
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How to get 192.168.3.2 to successfully ping 192.168.2.3

With the layout described below, the following is true: either router can ping any host on either subnet 192.168.2.0/25 hosts can ping (and ssh to) 192.168.3.0/24 hosts but 192.168.3.0/24 hosts cannot ping hosts on 192.168.2.0/25 What'd I do…
Lorin S.
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Keep router interfaces isolated

Have a Cisco Router 2811 with a HWIC that gives it an extra port so I have 3 Ethernet ports. Have it configured like this: FA0/0- 192.168.1.1 FA0/1- 192.168.10.1 FA1/0- 10.0.0.1 (outside) All that works fine except the .1 and .10 networks can talk…
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