A subnetwork, or subnet, is a logically visible subdivision of an IP network.

learn more… | top users | synonyms

2
votes
3answers
80 views

How come I can ping google but not a PC on a different subnet within my campus network?

I am a newbie to the networking world. I know that one cannot ping two PCs connected to different subnets unless you have a router in between. But, I was wondering how come I can ping www.google.com ...
0
votes
3answers
84 views

Chaining subnet fails

Is it possible to do the following: Machine1 Kubuntu 8.04 desktop wired internet Cable modem Machine2 eepc701 Xubuntu 1O.04 wired machine1 cross ethernet cable Machine3 nokia n900 wireless to ...
1
vote
2answers
227 views

Concise IP information in OS X Terminal

Is there a command for the OS X Terminal that shows you only the most vital IP configuration information about your machine? I know there is "ifconfig" but that brings up a bunch of (in most cases) ...
1
vote
2answers
130 views

2 routers, 2 subnets?

Firstly I will explain why I require this setup. I have bought an ASICMiner Cube for mining Bitcoin. It frequently stops mining until I reset it, which is quite troublesome. After reading the ...
1
vote
2answers
957 views

How to create a subnet at home with Linksys router

My home network consists of my ISPs router (Thompson TG585 v8) which is giving out both WIFI and Ethernet LAN connections on the 192.168.1.x range. The router's LAN address is 192.168.1.254. This ...
1
vote
2answers
199 views

connect to subnet via VPN

i have VPN setup which is like this: ########### internet ############## internet ############ LAN ############ # macbook # --------> # VPN server #----------># PC A # -------># PC ...
0
votes
2answers
29 views

Add printer from different subnet

i.e My pc ip is 11.19.20.3 with gateway 11.19.20.1 I have a printer with ip 11.19.22.25 with gateway 11.19.22.1 How can I add this printer to my pc?
0
votes
2answers
2k views

How do I get a /23 subnet mask from 172.16.0.0 /21 network address?

I have 172.16.0.0 /21 My mask is 255.255.248.0 I have an IP range from 172.16.0.0 to 172.16.7.255 255.255.248.0 11111111.11111111.11111000.00000000 Network------------------------- ...
0
votes
2answers
279 views

Devices on subnet cannot access each other but can access internet

I live in university halls and only have access to the internet and the network through one ethernet port. I have a TP-Link R860 router (wired only) and a TP-Link simple switch. If I connect using ...
2
votes
1answer
50 views

Active directory sites and services

I have 192.168.1.0/23 subnet for wired connection and 192.168.2.0/24 for wireless connection. Do I need to add 192.168.2.0 in AD Sites & services. Right now I have 192.168.1.0/24 added in the ...
1
vote
1answer
110 views

How to connect 2 home routers to connect 2 separate networks?

I don't know if it's a silly question, but I'm not very good at networking. So please help me out. I have a Netgear WNDR4500, and I configured my PCs and virtual machines setting the WNDR4500 ...
1
vote
1answer
899 views

Window 8 machine cannot ping devices on same subnet

After returning from vacation during which several Windows updates were applied and my router suffered a hard power cycle, my Windows 8 Desktop can no longer ping other devices on the same subnet. ...
1
vote
1answer
170 views

how to force an illegal netmask in ubuntu

I want to force a netmask on my Ubuntu machine. For example, I want 11.0.0.1 to get a netmask of 255.255.255.0 I tried editing /etc/network/interfaces and I forced the desired netmask, but as soon as ...
0
votes
1answer
131 views

unable to ping my win7 computer from an another computer in different subnet while I could do the opposite

subnet A(192.168.137.0/24) has P(192.168.137.1) and Q(192.168.137.2) computers subnet B(192.168.7.0/24) has Q(192.168.7.1) and R(192.168.7.2) computers P is my windows 7 computer connected to ...
0
votes
1answer
66 views

How do I create subnets given these constraints?

I am trying to tackle the following subnetting problem: Prepare subnetting for an organization that requires 2000 hosts to be placed on the network. The maximum number of hosts on a subnetwork is 300. ...
0
votes
1answer
30 views

How to calculate subnet of your interface based on the destination IP and subnet?

I am new to networking and linux so I am not able to fix this problem. I have a power controller connected to my linux PC (eth0) through a switch with the default static IP of 192.168.1.100 and subnet ...
0
votes
1answer
138 views

Cant ping to computer but reverse ping can

So Computer 1 can ping to computer 2 but reverse it can't Setup : router A (192.168.0.xxx) 255.255.255.0 > Router B (192.168.1.xxx) 255.255.255.0 So computer1 on Router B can ping to computer2 on ...
0
votes
1answer
448 views

how to split up network into two subnets with only one router

I have one router on my home network. This acts as the main WiFi access point for all devices, as well as being connected to a simple switch for my home lab. I would like to be able to isolate my home ...
0
votes
1answer
706 views

OpenWrt router acting just as a switch with another WAN from wifi client

I have here this networking problem I can't figure out. My situation is following: ADSL cable connection to WAN, provider's router/modem (some Zyxel), DHCP running, original firmware, not possible ...
0
votes
1answer
54 views

Remote network administration, solving 2 device 2 subnet merge

The problem: 1.) No Physical Access 2.) Very basic on site help 3.) Combining 2 subnets on 2 routers Now we know i cant go on site to move cords around so here are the current cord ...
0
votes
1answer
198 views

How to force to send data to router (on L3) instead sending directly? (on L2)

I have a public IP-addr on one machine: a.b.c.156/32 The GW is a.b.c.133 (which is in the /27 network with its gateway a.b.c.129) I statically added an arp route: sudo arp -an a.b.c.133 at ...
0
votes
1answer
33 views

Emulate Network address in a LAN

My college has a network, their dhcp will allot us a xx.xx.67.xx ip (Wifi), i found that in their lab they use a different proxy that is restricted for our ip range(Squid) (xx.xx.1.xx is their ip ...
0
votes
1answer
141 views

Is there a benefit of setting up VLANs if my subnets are wired separately?

I have 2 subnets within my office: 172.16.1.0/24 and 172.16.2.0/24. All devices on each subnet are wired independently from each other into the server closet. Previously each subnet had it's own ...
0
votes
1answer
2k views

Two subnets block traffic between them but allow internet

I have 192.168.1.1/24 network that has a switch and several access points .There is a adsl modem at 192.168.1.1 . I want to add a new network 192.168.2.1/24 with its own access point and switch. so ...
0
votes
1answer
519 views

How can i connect 2 PC with different subnets in 1 Switch in 1 Router

Well here is the problem...I want to connect 2 PC pc_1: 10.1.1.18/29 pc_2: 10.1.1.66/29 with 1 switch pc_1 -> Switch Fa0/1 pc_2 -> Switch Fa0/2 and this switch to a router ...
0
votes
1answer
46 views

What aids exist in RHEL v6 to calculate subnets without an internet connection?

The Red Hat version of the ipcalc program is very basic compared with some other versions that are available. Suppose you didn't have an internet connection and could only use tools that exist ...
0
votes
1answer
59 views

Junos - Shortening internet full bgp table

I want to shorten internet full bgp table (450K records) in such a way to catch all prefixes from /0 to /21 as well as all prefixes of /22 or more which are not included within /0 - /21 prefix range. ...
0
votes
1answer
4k views

When I change the subnet for the LAN interface on a Sonicwall firewall the WAN interfaces go haywire. What should I do?

Our company's old subnet was 255.255.255.0. To adjust for growth we decided to implement a 255.255.248 subnet. Upon changing this in our Sonicwall's LAN interface, our WAN connections quit working ...
0
votes
1answer
815 views

Creating a DMZ with two routers

Hopefully it's okay to post semi-"I am learning" questions on this forum! Basically, I have two routers (both Netgear D834G's) and would like to setup a DMZ at home (merely for learning purposes and ...
0
votes
1answer
1k views

using a gateway outside your subnet but on the same switch, with no router

I have set up a network in a non-standard way, and would like to know if what I did is technically correct, or if I just got lucky. The setup works fine with my $20 5-port Linksys switch, but not ...
0
votes
1answer
42 views

I have just created a subnet for a local network, connecting to a standalone server on another network, now I cannot connect to the internet

I am just learning some new aspects of servers and networking. We have a network of 5 subnets that all interconnect with each-other. In order to get two computers on the subnet that we were setting ...
1
vote
0answers
421 views

Why can't I change the subnet IP address in the Virtual Network Editor in VMware Workstation?

In the Virtual Network Editor in VMware Workstation (version 9.0.0 build-812388), I want to change the subnet IP address or one of my host-only virtual networks from 192.168.203.0 to 192.168.124.0 ...
1
vote
0answers
312 views

Shared Folders - Network Resource not Available

We have five computers (example "COMP1", "COMP2", etc.) at a remote site hooked-up to our domain. Each computer has a shared folder which gives full permissions to the local administrators group. To ...
1
vote
0answers
69 views

Mixed use network access restriction

networking dummy here. I have a mixed business-home environment and would like to create a secure environment with controlled access. Here is a basic layout: http://i.stack.imgur.com/2lVGv.png The ...
1
vote
0answers
1k views

Accessing a wireless router on a different subnet

Okay, I'll try to describe how this network is set up. I didn't do it personally, but it has been described to me. Firstly, we get our internet from a 3G wireless USB card from ATT. This means that ...
0
votes
0answers
6 views

Get all the Up ip in the local network -java

For the Java project i need to scan the list of ip connected to the same local network via wlan or eth0 or anything. I need to get the list of ip address that are up in the local network. I tried ...
0
votes
0answers
36 views

Split current network installation in two Vlans

here I got a (really) tricky problem In my home I have a basic router from my ISP and the DHCP Server that serves every mac address with a static IP in this configuration : Family devices : ...
0
votes
0answers
24 views

virtualbox pinging from one subnet to another

I'm using virtualbox and I have 3 virtual machines, there's the middle vm which is a Linux Fedora 20 which has two interfaces connecting each to one subnet, the other two vms is one also a Fedora 20 ...
0
votes
0answers
72 views

Arch Linux device with static IP address, new router not finding the device

I have a device running Arch Linux on my network (Raspberry Pi to be exact) and I do not have a cable for the display. I typically used it by ssh client and had it configured for a static IP address ...
0
votes
0answers
24 views

Should we load smaller subnets into Active Directory

Our network team is splitting up the subnets in each of our offices from /16 and /18 subnets to multiple /24 subnets. Our systems team is not changing Active Directory sites and services to replicate ...
0
votes
0answers
1k views

How to setup two-way routing with Tomato Wireless Client mode (different subnets)

Currently I have a Netgear R7000 as my main router, with internet coming from a Moto Surfboard SB6141 Cable Modem. I have a Linksys E3000 running Toastman TomatoUSB connected to the R7000 as a ...
0
votes
0answers
1k views

Windows 7 can ping but can't see device on other subnet

I have 2 Windows 7 on 2 different subnets but 1 of them is unable to reach a NAS. The topology is as follow. Any idea why this is the case? Is there some Windows settings I need to apply? Subnet 1 ...