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

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How to Browse Machine on Sub-Network

How can I browse a machine on a sub-network? Our primary network addresses are at 192.168.1.x In our LAN we also have a little wireless Netgear router with some devices connected to it, which ...
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70 views

Sub net, 2^n or 2^n - 2?

To calculate how many bits I need to borrow when designing a subnet, is it 2^n = X or 2^n - 2 = X X being the number of subnets desired. I've found two websites each giving one of those ...
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2k views

Cisco Packet Tracer error “Invalid IP for this subnet mask entered”

im using cisco packet tracer configuring pc ip and this error came out "Invalid IP for this subnet mask entered"
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3k views

192.168.2.xy can't access 192.168.1.xy (: 255.255.255.0)

My goal is to access my NAS from a PC, but NAS is not reachable. Situation Here is my network configuration: Router 1: 192.168.2.1 : 255.255.255.0 Router 2: 192.168.1.1 : 255.255.255.0 NAS: 192....
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160 views

What IP's should the servers be assigned? [closed]

I have got 4 subnets (calculated using online calculators) The major network is: 172.16.0.0/16 The students subnet having the highest IP requirement /22 mask gets 172.16.0.1 - 172.16.3.254 as ...
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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 ...
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3k views

How many subnets are needed?

I'm just starting out with networks. I'm trying to determine how many subnets are needed for this network: BRANCH1, BRANCH2 and HQ are routers. The Boxes between routers and PCs are switches. The ...
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3answers
4k views

Broadcast address in IPV4

I have a small network with the subnet mask 255.255.255.240 and the IP range is 192.168.2.1 - 192.168.2.12. From 192.168.2.1, I want to broadcast a packet. I don't want this packet to go anywhere ...
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2k views

What is major network mask and subnet mask

I've been served with a question to find Major Network Mask and I've only given Host IP address and sub-net mask. I have to find the Major Network Mask using Host IP and sub-net mask. Another ...
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928 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 (...
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3k views

How to find CIDR subnet for a public Internet IP address?

Usually I do not worry about subnet of an IP address on the public Internet, but after I began using Amazon EC2 firewall, it got me thinking. EC2 firewall configuration requires an IP to be written ...
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616 views

Regarding IP subnetting process

Professor taught the following scenario. An organization has purchased a Class-C address 216.21.5.0 and would like to use it to address its offices at Arizona, Florida and California. It has the ...
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53 views

Unable to Reach Phone's Web Interface

My network admin is out on vacation this week, so I can't get the answer from him. My office's network shares its bandwidth between its phones and its computers. The phones have IPs like 10.22.0.* ...
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3answers
1k views

Network addressing without wasting IP addresses

I know how to do the classic "network addressing" when I am allowed to waste IP addresses. For example, if I need to hook up 9 computers, I could use a /28 subnet, which allows 16 hosts to be mapped ...
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56 views

Accessing a subnet

I've a network configured in this way ROUTER 1 (PUBLIC IP - PC1) ----> ROUTER 2 ----> PC2 (LOCAL IP) I can locally access PC1 (192.168.1.2) from PC2 (10.0.0.2), but cannot do the opposite: I'...
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How can I put two wireless routers on the same subnet? [closed]

I have two Netgear wireless routers; one primary (WNR2000) connected to the Internet, and a secondary (WNR1000) connected to the primary via a long Ethernet cable to the other side of my home. A LAN ...
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2k views

2 TP-Link routers are connected

I have two TP Link routers, one is connected to the ISP and the other's WAN is connected to one of my Ethernet Ports (assigned IP from router1 192.168.1.200). Hosts in the 2nd router (192.168.0.0/24) ...
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236 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 ab:cd:...
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40 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 ...
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202 views

Multiple subnets communicating with Server

I have three clients, each one in a different subnet like this: Client 1: 192.168.2.11/26 (network .2.0 ; broadcast .2.63) Client 2: 192.168.2.72/26 (network .2.64 ; broadcast .2.127) Client 3: 192....
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If I have a subnet mask of 255.255.255.0, what is the next valid subnet mask address [closed]

If I have a subnet mask of 255.255.255.0, what is the next valid subnet mask address on either side (above or below)
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296 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 ...
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467 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 ...
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89 views

2 Subnets see each other

I have 2 routers that need to be on different subnets. The reason is that router 1 is connected to the internet outside the US where I live. Router 2 is behind router 1 and has a VPN server ...
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Lan to Wan setup how to connect two subnets

I hope someone can help me with issues I have with my home network. I have a Billion 7700N modem/router and currently I added a Western Digital N600 dual band router. By default (following setup DVD ...
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5k 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 ...
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769 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 ...
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2answers
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Is 225.225.225.128 a valid subnet mask?

I have been told that we have two devices on a network: 10.40.225.142 and 10.40.225.144 These devices both have Gateway 10.40.225.129 Subnet mask 225.225.225.128 (note 225 is Not a typo) These ...
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Using local SSH tunnel from remote machine/another subnet

I have a Linux machine (box 1) with Internet service connected to a Wifi router sitting right next to it, through Ethernet (eth0). The purpose of this router is so I can share this Internet connection ...
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477 views

how to take subnet mask for an IP

I found this problem in a textbook, and I do not understand the solution: Find the subnet which the IP: 192.168.1.25 belongs to. Here is what they did: 255.255.255.224 for 192.168.1.25 and do ...
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Port forwarding from modem to a subnet

I have a webcam server that requires port forwarding to be able to access it from Internet, but the webcam server is located in a subnet and I couldn't make it work. Description of my setup: There ...
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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 ...
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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. ...
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“Destination port unreachable” when pinging computer in another subnet

In my home network, I connect to the Internet through a router (192.168.1.1). I also have another router (192.168.1.15, 192.168.2.1), this one using OpenWRT, configured as a wireless client. One of my ...
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How to put two subnets next to each other?

I've been using this calculator http://www.subnet-calculator.com/cidr.php, and I'm trying to figure out how to put two different subnets next to each other. For example, I want to have a /27 subnet ...
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753 views

What is the effect or purpose of subnet on client PCs?

I understand that the subnet mask when combined with an IP is used to define the range of IPs that the router is responsible for routing. e.g. a router with 192.168.3.1 subnet 255.255.254.0, will ...
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Accessing computer in other subnet in the same network

At my university, we use the Eduroam wireless. It gives my Tablet 131.220.206.8 and my computer 131.220.202.17. I'd like to SSH to the Tablet, but I cannot connect to it. How can I access computers ...
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Splitting and connecting a small subnet

It's been a while since I built out a network so bear with me as I've lost some of the nomenclature. Given "5" usable static IP addresses from our ISP is it possible to use 3 of them for globally ...
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How to create a separate subnet for wireless access?

I need to configure my wireless router so all wireless devices are on a different subnet (192.168.2.1). The wireless devices should be able to access the internet, but ideally not the workstations on ...
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Subnets and gateways

I have a doubt with subnets and their gateways. For example assume I have four subnets using a mask of 255.255.255.192: A) 192.168.1.0 B) 192.168.1.64 C) 192.168.1.128 D) 192.168.1.192 If the ...
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976 views

Subnetting an IP address (172.16.0.0/12) into 2 subnets

Say I have the private network address 172.16.0.0/12 and I want to split it into 2 subnets. There are 12 bits used for the network number leaving 20 bit for the host number. I use 1 of these host ...
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1k views

Subnetting 90.103.80.0/21 into 8 subnets with at least 250 hosts per subnet

I am studying subnetting and I am not sure if I've got the hang of fully. Here's a question I've answered with my answers posted below it. I am particularly unsure about Question 4. I'd appreciate ...
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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. ...
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Isolate two networks in one switch (Cisco SGE2000)

I have a small lab, which has 15 systems for development environment and 5 systems for Testing environment. I have only one Cisco SGE2000 (24-port) Ethernet switch. Currently all on 192.168.3.0/24 ...
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Setting up the subnet mask for two separate connections on XP?

I'm on Windows XP SP3 and basically my topology consists of 3 computers (see drawing for more detail), a wireless connection to the Internet and a wired connection to a router. My main computer (A) is ...
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192.168.x.x addresses with subnet 255.255.0.0

We are designing a network where we have 192.168.100.52 192.168.110.13 Initially the subnet mask was 255.255.255.0, so clearly these first two machines will not communicate with each other without ...
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2answers
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Can't connect to Cisco router's settings page

Currently I have a 2 wire modem, and a Netgear WNDR3400. What I want to do is add a Cisco RV100W for its VPN features. Currently the Netgear router is connected to the modem via the WAN port. When I ...
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39k views

Why can't my OpenVPN client access machines on same LAN as OpenVPN server?

I have configured OpenVPN on my Linux server and Windows client according to the instructions here. My client can access the server, but can't get any further onto the LAN. My Server is 10.23.29.64/...
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261 views

Understanding the black magic of IPv6 addresses

my router (AVM Fritz Box) is supporting 6to4. So far it works but I want to understand what's going on. The last few hours I spent on a IPv6 book. There are many things I understand now but there is ...
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How do I join two subnets with two DD-WRT routers?

I have two separate DD-WRT routers which I would like to bridge together so that computers connected to each are on the same subnet (so that multicast can work between them for UPNP/DNLA media sharing)...