Cisco :: Assigning A Subnet To A Network LAN
Nov 7, 2012
I am doing Activity 6-1: Basic VLSM Calculation and Addressing Design (6.4.1) in the ccna book.the lab can be seen here: (mellowd - link removed) I've done the topology and assigned the addresses appropriately as shown in the first table. My question is on Task 2 Step 2."Assign the first available subnet to HQ LAN1."
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Aug 14, 2012
i need to draw a picture of a network being divided into two buildings one with 100 connections and the other with 560 connections and also need to assign ip and subnets on them. how many routers do i need for this?what class of ip do i need to use?what are the subnets
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May 17, 2011
My local DHCP server mis-assigns IP Addresses of 192.168.x.x to laptops every morning.It has been suggested that one of my print servers (two Fierys and a Creo) is pushing 192.168.x.x onto the network but I think I've ruled that out. have an XP Pro desktop running a standard Windows bridge that connects a wireless Netgear router to the local Cisco switch. This has worked flawlessly for a couple of years so I hesitate to blame the bridge.My remote IT dept pushed a change/update to all locations having to do with address lease duration. I do not know details.Is there a way I can identify the source of the problem if I do not have admin access to the DHCP server? The only local control I have is to cycle power.
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Sep 3, 2012
I have a win xp system which connects to internal network & Internet. The problem I have is, for each work i need to change the IP address.
Ex: For internal network the ip should be 192.168.0.1 To connect to internet the ip should be 192.168.1.1
Now I want to be connected to both internal network as well as internet at the same time. So what should I do ?
* I can not add another physical network card.
* I can not change the IP's of any other system or config servers etc... (as it is used by our internal application, doing so will make a mess.)
* I have the admin rights so any software changes to my system can be done.
So i was hoping to add a virtual network card, and configure it to the new IP. So can that be done ? if so how ?
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Jun 25, 2011
I just got a brand new laptop and I can't get it to connect to LAN.It's plugged in to the same hub as my main machine and I can't even access my router UI.It's not the cable because I tried plugging in my main machine's cable to the new laptop and the same thing happens.ipconfig reveals an Autoconfiguration IPv4 Address of: 169.254.197.187 But that number should say 192.168.1.1xx I've tried uninstalling and reinstalling the Ethernet driver as well.I've tried resetting the router and modem.I've tried resetting TCP/IP.
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Apr 26, 2011
my customer has FreeRadius, and I'm trying to get the server to assign a network admin role to a 5K running 5.0.3 code.This is based on the example given in this document: url...The server authenticates the user name, but will only put the user into the network operator role. This is confirmed by checking the output of show user-account and debug security user-db.The Radius test using the same credentials passes the authentication test. I'm sure the problem is that the N5K dosent understand the VSA format of the attribute, and that this is a simple syntax problem.
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Jan 11, 2011
In my Institute intranet we have divided the network in various subnets. My subnet ip is 10.100.95.xx. But only my subnet can access the internet the other subnets such as 10.100.94.xx and 93.xx cant't.
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Nov 20, 2012
i want to give my switch a ip address with same subnet as a pc which is for eg having ip address of class a and subnet of 255.255.240.0
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Apr 4, 2011
I am designing a network right now that is going to have 356 devices. I need to use vlan separation with subnetting for a number of reasons. The first (and most obvious) is that there are 356 devices that will require an IP. Too many for one subnet. The second is that a good portion of the devices that I am using are a litlle to chatty with the broadcast traffic for my comfort. I have two subnets that are going to be specifically alocated to these chatty devices. Our switches are being provided for us by the client for unknown reasons. They are providing us with HP ProCurve E2810 switches which are layer2 switches.
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Aug 3, 2012
What I am trying to do is I have one switch with say a 10.1.9.1 sub-net I need to have one of the ports to be trucked with two vlans one for DSL and the other for a local connection with the sub-net of 10.1.5.1 both of the sub-nets are configured in the core as 9 and 5 so I have port 0 set up as a trunk and it is set up as ge-0/0/0.0 vlan_5, vlan_192 on the 10.1.9.1 subnet switch. The DSL is working but the local is not pulling a 10.1.5.1 IP and has no connectivity. Everything looks as if it is configured correctly but still the DSl is working but not the Local connection.
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Oct 16, 2012
it is each wireless access point need to have different subnet, if 24 users connect at the same time? will it be slow down if 24 user put in the same network?
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Jun 23, 2011
I have a supplier which i need to connect a site to site ipsec vpn connection to (from a draytek router). I have already done this on our main site with no problems using the local ip details of 192.168.1.0 and subnet 255.255.255.0 however i need to do the same on our DR site which uses the ip details of 10.1.0.0 and subnet of 255.255.0.0. Our supplier told me the 255.255.0.0 is already used at there end by a different customer so we are unable to connect the vpn and communicate (in theroy we can connect but our supplier cannot reply). We can setup a connection to another spare server on a different address using a different subnet but effectivly this would mean that communication would stop at that server and communcation to the overall network or specific server the supplier needs access to (on the 10.1.0.0 255.255.0.0 network) is not possible. I was thinking maybe an internal vpn server to server connection through win server may do it, 2 nic cards or routes in the server routing table but this all seems a bit messy. Our network consits of win 2003 and 2008 R2 servers and is basic network with modem-vpnfirewall-switch and devices on the internal network connecting to the switch.
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Feb 1, 2012
We have recently aquired a remote location which has a pre-existing flat network (172.16.X.X/16). Before we are able to convert them over to our new IP scheme, they have a need to have wireless connectivity on site. We have 4 1142's which I need to configure for them. I have experience configuring WLC's and autonomous AP's for networks with multiple vlans but have never configured AP's for a flat, single subnet network. I need to configure them for either guest access (internet only) or corporate access to network resources with radius authentication. Do I configure a native vlan as I would for a typical multi vlan network? Do I configure the switch port as an access port as opposed to a trunk beacause of the lack of layer 3? I basically need a sample configuration for this situation.
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May 29, 2012
I am unable to set router's (RT-N56U) IP adress to default one (192.168.1.1), or any other in subnet 1. It always popum message to me which says "IP adress 192.168.1.1 is not a valid adress". Also when I restart device it automaticaly sets its IP to 192.168.2.1. I have static IP which is translated to IP in subnet 1 so I need this working. The router is in "Wireless router mode (Default)"
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Sep 28, 2011
partition the departmental IP network address block to create a staff and a student subnet. Each of these will be identified by its own network address and netmask. It is university policy that you must be economical with the IP addresses. That is, the subnets must be as small as possible, but they must be large enough to accommodate the maximum number of hosts you were given. Also, it is university policy that the respective gateway router to the outside world should always be given the highest possible host IP address in the subnet. The student subnet should have a higher IP network address than the staff subnet. The network must be able to support up to 60 machines on the staff subnet (not counting the router) and up to 120 machines on the student subnet (also not counting the router).
IP address/netmask
University network address127.158.128.0
University network mask255.255.192.0
University internet gateway IP address127.158.191.254
Department network mask255.255.254.0
Department router address127.158.129.254
Suppose that the network address of the departmental network is 127.158.128.0 (calculated by AND between Dep network mask and Dep router address)I know that 60 machines would use 6 bits for the staff subnet.the netmask of staff would be 255.255.255.192.how can I figure out the the IP network address of the staff subnet.I have worked out the range for the staff subnetwork.
127.158.128.0 - 127.158.128.63
127.158.128.1 = Gateway address
127.158.128.63 = Broadcast address
Now how can I calculate the IP network address of the staff subnet?
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Sep 17, 2012
Is it possible to assign a L3 switch port with a public IP? How do you rallow data from the Internet to the above port, if possible?
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Aug 24, 2011
we have cisco wlc 4404. and we want to access it thru internet.
i have attached the management interface screenshot.
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Aug 26, 2011
I got a new modem today (a Cisco DPC3825) and it seems to be presenting a problem. I used to be able to simply and quickly change my IP address, by changing the MAC address though my Netgear router. Now when I do that, I can see the IP address has changed in the router settings, but when I double check it using ipburger.com, the IP address does NOT actually change, but remains the same.
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May 20, 2011
I posted of an issue we were having but I feel like I was getting ahead of myselfBasically I need to know how to do 2 things.I want to assign a static IP I purchased from Comcast to my Netgear N300 router and then in turn want that IP address to be linked to the server here in our office so that when people use the Remote Desktop Connection it directs them to the proper machine.
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May 26, 2012
I am trying to give an static ip address to a time clock on my network and for some reason when I connect time clock to network it will always get an ip address from a different network. for example my computer IP address is 192.168.2.70 when connected to network, my default gateway is 192.168.2.1, the IP address that the time clock always gets is 192.168.1.120, there is no way to tell the time clock what IP address I wanted to be it has to get it from router (that is what the manufacturer told me), router (16portLiksys) does not have DHCP enabled the guy who set up network left it disabled, on his notes he says server (dell server T110) is acting as router is that true that a server can be acting as router?what do guys think is going on here?all the computers hooked up to network have static IP address.I also notice that when I connect a computer to router it will get an IP address from different network the same as time clock.I tried to reserve ip address on router by entering MAC address from time clock but it won't work. I am not very familiar with the server settings I have not try changing settings on server, I am not even sure the guy who set up network is right about using server as router.
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Dec 16, 2010
I am replacing an older AP with a new 1252 unit. I attached everything and powered it up, but my DHCP server does not appear to be finding it and assigning an IP address. The status light stays green and the ethernet light blinks randomly green. Seems to be connected fine, but without an IP I cannot configure it to use it.
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Jul 25, 2012
My company wants to create a VPN Tunnel to allow a remote office to connect to ours. I purchased 2 ASA 5505 and I was expecting to be able to set this up without any issues. Sadly, that is not the case.
What I'm having trouble with is configuring my Public IP Address to the device. I go through the setup wizard and enter the IP Address like normal, but I have no option to input my ISP's subnet, Gateway or DNS. Without those, I get no internet connection. I know there is a way to do this, but I'm stumped.
My Specs:
2 ASA 5505 series
ISP Modem (Which they control) - SMC SMCD3GN with DHCP disabled
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Jan 7, 2013
HP wifi printers (I've had 2 over the last several years)eventually have a disconnect with my wifi router and was told (by an experienced IT guy from my last job) I should assign the printer a static address to eliminate the problem. How can I assign a static address to my printer. Here are the models Router: Belkin model F5D9231-4v1(01); Printer HP Officejet 6600. I know how to access the printer and manually enter an IP address and subnet and such, I just don't know which numbers to use where. I also know how to access my router, via typing in the IP address in Internet Explorer, but i'm unsure of which tab within the router's page (i.e. is it category wirelessunder MAC address control) or which numbers (IP address or MAC Address)and where should I get the correct numbers from (i.e. go run, cmd,IPconfig/all).
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May 4, 2012
For over a month I am trying to find a way that makes me able to use two internet connections at the same time, and assign certain programs to one connection. This is because me and my brother do game on the ADSL cause of the low latency of it, when one of us do surf the whole connection lags. I do have 2 internet connections at home, one is ADSL(1.5MB Connection) and one is WiMAX(10MB Connection). Both of these routers/modems are connected to the same network. I want to use the ADSL for gaming(light usage) and the WiMAX one for browsing and downloading(heavy usage).
I came up with three ways:
1) ForceBindIP - (1) (2) - Didn't work for me with Windows 7 64bit on Firefox 12.0
2) Using VMWare - Which I do not want to.
3) Using Astaro Security Gateway Home Edition - Which is a bit complicated and I have to run a dedicated PC for it with special setup in order to make it work (Live Demo)
ADSL:
IP Address: 192.168.1.1
Subnet Mask: 255.255.255.0
WiMAX:
IP: 192.168.1.2
Netmask: 255.255.255.0
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Feb 8, 2011
I have a Tenda W300d modem/router that works fine sometimes, but others, like now, it's being a real pain and not connecting with some of my devices, I have a PC, laptop, PS3 and phones that mostly happily share connection, the PS3 is connected via cable.sometimes it just won't allow things to connect, I try rebooting it, sometimes it works, sometimes not.IS there something basic I'm missing? the control panel for it seems quite comprehensive, but I'm no expert at it.
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Jul 1, 2012
I am using Windows 2011 SBS and Windows 7 clients.My server has a DHCP range of 192.x.x.150 to 192.x.x.199 and all other I.P. addresses are static. On a workstation located at I.P. 192.x.x.13 I am seeing an address conflict.When I perform an "nbtstat -a 192.x.x.13" command from the server I am given the logical computer name of a staff members personal laptop.Investigation of the laptop reveals that it is set to DHCP, and clearly the address of 192.x.x.13 is outside of my servers DHCP scope, so this I.P.should never be assigned, let alone in duplicate.I Google this topic before posting, and it was suggested that IPv6 could be having an adverse affect. I determined this because I performed a ping on the laptop and only got a MAC address back rather than an I.P. address.However after unticking IPv6, and rebooting, the laptop is still causing havoc.I can set a static I.P. address on the laptop, however this is not ideal.
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Oct 12, 2011
We once had a virtual server with two network adapters, one was internal and the other was external, and people could access it directly from the internet.
That server recently, died (someone put the .VHD file on a massive RAID 0 array, and that went boom), and I need to set it back up again. All the DNS entries appear to still be there, but how to assign the external IP to the network adapter. I tried Google, but my Google-fu must be weak today as I can't find anything useful.
It's a Server 2008 R2 machine running inside Hyper-V. Nothing's changed except for the new Windows install, it's running with the exact same VM settings, which I didn't touch except to add a new VHD.
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Jan 8, 2013
We are looking to possibly purchase 2 RV042G routers. The main goal is to tie 2 sites together (via the internet) utilizing the site-to-site VPN feature.
Here is where it gets a little tricky. Since this device has 2 WAN ports, is it possible to assign a seperate IP address for each from our ISP? Then, what we would like to do is assign a couple LAN ports to have the traffic flow through WAN1 and the other LAN ports to flow through WAN2. The LAN addressing can be on the same subnet or seperate.
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Jan 16, 2013
I have two WAP4410N devices on my network.When I try to connect with a wireless device (iPad, Smartphone, etc...) it does not connect.However, if I assing that device a static IP, it connects.Here is the setup:
-2 WAP4410Ns that have static IP's assigned to them. They plug into my 3560's
-Three Cisco Catylist 3560, one of which is my Default Gateway.
-Windows 2008 Server R2 (Domain Controller, DHCP, DNS)
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Jan 22, 2012
I'm fairly new to Cisco configuration and I am looking at a problem for a client that involves the use of a Cisco 887 (wired only) as the main router/gateway. The problem I am investigating involves the allocatoni of DHCP addresses from the device to a product we have designed that connects to the router. I am attempting to set the 880 up on the bench with no ADSL connection and just use the DHCP feature of the box for the 4 switch ports on the back. I have tried all kinds of configurations from default. Whatever I do I can't get the router to assign an IP address to anything that is plugged in (Windows or Linux machines). What could I be doing wrong ? It can't be that difficult to get the system to just act as a DHCP server.
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Jan 19, 2012
I have 1 x C2900 router with 3 x ADSL WIC and UC500. I setup 3 x ADSL to access internet and UC500 is connected with 3 telephone lines (plugged into FXO ports). I have 2 x GE on my 2900. 1st GE is connected to switch and 2nd GE is connected to UC500.
I want to setup that traffic from UC500 (SIP) is going through 1 dedicated ADSL line and data (from computers & servers) is going through remaining 2 interfaces only. How I can set it up.
I would also like to know how I can load balance internet connection going through 2 dedicated data ADSL lines.
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Sep 7, 2012
We have a dsl connection on 897 dsl router at the customers HO.The telephone line is directly connected to router we configured dialer with username and password and it takes a static ip of 212.249.213.xxx.Now he has some branches that are connected through wireless links and he has arranged for a subnet of 8 public IP's in the range 72.70.245.xxx
Can we some how use these public ip's as secondary in the routers dialer interface and assign to the servers in the branches so that it can be accessed through web.
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Jan 6, 2012
Briefly here is my setup Internet is supplied to my building by ISP(I have no router) => apple time capsule connected by Ethernet.I have used WIFI to connect all of my devices in the past with no problem until i moved into this place. I have 2 macbooks that can connect without any issues Every single other device in the house cannot connect and does not receive a proper IP Address. The ones being assigned are in the 169.xxxxxx range. Even if i plug my Imac (which cant connect) directly in from the wall via ethernet, it wont connect.The time capsule is setup as a bridge with DCHP set to run automatically. I have reset everything numerous times and restored the router to no avail.I called the ISP and they said it wasnt their problem. I was under the impression they werent assigning the IP Address correctly or something.
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