2 DHCP Servers On Same Subnet Or Linking Two Subnets?

Aug 6, 2011

I have two locations both about 800meters apart, one is my home and the other address is a campsite where i have a linked router network (WDS with routers running ddwrt) where campers can all use the internet and also i have several IP cameras. Obviously both address have different gateways and therefore their own DHCP server. Everything was running perfectly until.I linked both of my address up using a long range antenna and now i am having problems.

Sometimes the two DHCP servers are competing with each other (i need both addresses on the same subnet in order to view my IP cams from home) and sometimes the computers log on to the wrong gateway. Its very annoying because the only way i can resolve it is by turning of the "linking routers" for a minute and then the Computers log onto the correct gateway. This happens to clients both side of the bridge. I have many different clients on both side of the bridge so assigning each computer (via windows) its fixed default gateway and DNS is out of the question as some of the clients are Camper's PC's and mine and my wifes laptops swap between both locations.

Now my query is, how can i block both DCHP servers from going over the bridge? OR can i have them on both separate subnets and still view my IP camera and still access all the routers from each subnet (i need this because sometimes i need to reboot the routers from home)

View 12 Replies


Two DHCP Servers On Different Subnets Same Physical Network?

Aug 14, 2012

I've done a very crude drawing of the network setup I'm working on. I just need to run an idea past some network guru's to see if I'm right about my idea.

The existing network consists of

Proxy Server
Several switches scattered around school

What the school wants to do is setup a side-along wireless network that uses the same physical switches but on a different subnet. The current subnet is 10.172.1.x .

To facilitate this I'm running a 2008r2 running RIP V2 to route internet traffic to 192.168.1.x subnet. I've had the wireless units use a static address and their own dhcp servers on the 192.168.1.x subnet. Wireless devices found their way to the internet fine. But I'd like to control the addresses from a single point of contact, hence the 2nd domain server running 2008r2. There are reasons for using a 2nd server, I've covered this in previous topics. If it's important, lets call it an intellectual exercise and leave it at that.

The question(s) : If I run a DHCP server on the 2nd server serving 192.168.1.x addresses, then any device on the physical network will obtain either an 192. or a 10. address correct ? The wireless devices will only take a 192. address because the wan address is statically assigned to a 192. address ?

The 2nd question : By setting a static routes out of the 2nd nic on the 2nd server, I can control the dhcp server so it will ONLY route dhcp requests to the statically assigned wireless devices ?

View 6 Replies View Related

Cisco Firewall :: 3560 - ASA Limit Bandwidth Per Subnet For Multiple Subnets

Sep 16, 2012

I have an ASA which is managing internet access from mutiple VLANs configured on a 3560 switch. I want to be able to limit the 100MB internet connection on the ASA on a per subnet (VLAN) basis for the multiple subnets configured on the switch..
so for example
VLAN10 - - limit to 5MB
VLAN20 - - limit to 10MB
VLAN30 - - limit to 3MB

View 7 Replies View Related

Cisco Switching/Routing :: Nexus 7000 Two Servers In Different Location But On Same Subnet

Mar 15, 2013

I have forgot this technology name, but, I remember it can achive on between Nexus 7000s in two location, and also between two catalyst 6500.Can I ask if it can be done between one nexus and one catalyst 6500?

View 8 Replies View Related

Cisco Wireless :: DHCP Error With WLC 2504 And Aironet 2600 Setup Across Subnets

Apr 2, 2013

I have just setup a new WLC 2504 controller to manage a WiFi service that will span 6 geographic locations.  The local networks at each location are on different subnets (all 192.168.x.x) and are linked up via IPSEC VPN links, and there is Active Directory spanning the sites, with DNS and DHCP servers running at each location.
I tested the WLC at our main office with a single AP, and it worked fine.  The AP set itself up, and wireless devices connect with no probs. Great!  Yesterday I headed out to one of our remote sites, and connected an AP to their network - and that seemed to work fine too.  Within a few minutes I was able to see the WiFi network I'd setup, and my smartphone connected to it straight away (as I'd rpeviously connected at the main office), so I was pretty happy that all was working well.
This morning however I've had notification that wifi performance at the remote site isn't great.  I've got someone to check their ip address, and I've found that their IP address and default gateway match the LAN at the main office where the WLC is based - NOT the LAN where the wireless client is.  Obvioulsy this is not ideal!
(I guess I HAVE done something wrong!?).  And how can I get wireless clients at remote sites to pick up an IP from the DHCP server at THEIR site?

View 3 Replies View Related

Cisco Switching/Routing :: 3750 - Multiple Subnets In Single DHCP Pool On Device

Mar 25, 2012

3750 can not support multiple subnets in it's DHCP server pool config.

Is this an issue that can be fixed with a different iOS or is there a different Cisco switch that I can replace the 3750 with that will handle multiple subnets within an individual pool?

View 1 Replies View Related

Dual DHCP Or Access Devices On Different Subnet?

Aug 23, 2011

I have a problem with my 2 networks which are 1000 meters apart.One is my HOME the other is my CARAVAN SITE. both networks are working fine independently, the problem occurs when i join the networks together.I need to connect the said networks together in order to view my IP cameras which are dotted all around the campsite, i need to be able to view these from HOME.The problems i am having is DHCP servers are stealing clients from the other sides and directing them to the wrong gateway.please see below network map (these routers are all running DDWRTBelow is another network map which someone on another forum told me to do but its still not working. (DHCP servers are still clashing and still stealing clients)y the way, on both of the network maps all routers are connected with the LAN interface. someone told me to connect certain routers with WAN and it didn't work, or it was not explained correctly.Also please note that assigning clients with Static IP's is completely out of the question due to most of the clients being campers who come and go

View 1 Replies View Related

Router DHCP Handing Out IP Addresses Not On The Same Subnet?

Dec 22, 2011

I have a Belkin model F9K1102 router supplying WAN/LAN connection to three PCs and 2 laptops. Two of the PCs are hardwired with the remainder PC and laptops are wireless. I'm using the default router IP of and my ISP is Charter Cable (if that's of significance). The router is picking up all the dynamic IP information from my ISP and internal DHCP is enabled. Here's the issue though - when I connect a PC, laptop or iTouch (wired or wireless) with obtain IP settings automatically enabled the IP address it receives an IP address on a different subnet ie, 192.168.3.x and thus won't have WAN/LAN connection. I have tried to set the router IP to and set the scope in the .3 subnet but the IP obtained by the device is .4! This makes no sense to me at all. The router is on the latest firmware (according to Belkin) and there doesn't seem to be any other update I can find. I have also tried another Belkin router (older model: F5D8236) and it does the same thing.

I'm not sure if this is related but I upgraded my service with Charter to a 18MB connection and a D3.0 Ubee cable modem - this issue seem to have began after this upgrade but I don't see how that would have any bearing on what is happening on my LAN IP scope and Charter tech support is pretty useless. My workaround is that I've static assigned an IP for each device in the same subnet as the router but it would be nice for the DHCP to function correctly.

View 7 Replies View Related

Cisco Firewall :: Can ASA5505 DHCP Support 22 Bits Subnet Mask

Feb 11, 2013

I have an ASA5505 which provides internet (just internet) for about more than 600 pc/laptops. Can 5505's DHCP support this number?

View 4 Replies View Related

Servers :: 2 Dhcp Server On The Same Lan Segment?

Apr 14, 2011

2 dhcp server on the same lan segment not thesame ip add series , how can i prevent to lease ip from another ip series

View 2 Replies View Related

Servers :: DHCP Superscoping Or Resubnetting

Feb 21, 2012

I have a LAN running on a 10.60.1.* scope and I am running out of IP addresses. My windows server 2003 IP is router is, If I create a superscope with 10.60.1.* and 10.60.2.* scopes within it and add an IP address from the 10.60.2.* range to both the servers and routers network configurations would this allow the clients on both scopes to see the network? The router links our office to other offices as well would the new IP range cause all kinds of routing issues?I know with the resubnetting option changing to a from the current would allow the use of in a single subnet but I suspect this would cause problems with seeing the other offices unless all routers were reconfigured to recognise our offices new subnet mask.

View 1 Replies View Related

Servers :: Set Up Active Directory Without DHCP

Mar 23, 2011

I am trying to set up a small domain for my business. I just purchased a Windows 2008 server and would like to use it as my domain controller.Also, I just had a new ATT DSL line put in. It came with a 2Wire modem/4-port router/wireless router device, therefore the modem can handle DHCP. The line has a static IP address as well so that I can eventually use my own exchange server and web server.I have tried 2 different configurations and couldn't get either to work) I tried to put the router into Bridged Mode and use DHCP server on my server using a PPPoe connection to connect to the Internet. I was confused as to what my static IP address and default gateway of my server should be.2) Then I tried to turn DHCP server off on the server and routing back on the modem/router. This didn't work either.What method would you recommend and why? Also I have some additional questions on each method.

Method 1)

* What is the static IP address of the server. Is it in the 192.168.1.x address or the static IP assigned to my account?

* Do I need a second Nic Card And Router to connect to the rest of my network or can I use the router provide

* What would the Static IP addresses of the additional PC be. Do I need more than 1 static IP from AT&T Method 2)

* Will this allow me to use all internal IP addresses on my machines and use port forwarding if I want a specific box to be a web server or exchange server.

View 18 Replies View Related

Servers :: How To Change From NO To YES In DHCP Enabled

Jan 19, 2011

Ethernet adapter Local Area Connection 2; DHCP Enabled: No

View 4 Replies View Related

See Unauthorized Dhcp Servers In Network?

Apr 20, 2011

how can i see unauthorized dhcp servers in my network

View 1 Replies View Related

Servers :: DHCP Clients And Internet Connections

Jan 11, 2013

I have successfully configured my DHCP server because I can ping it from the clients PC and my clients PC automatically grabs IP from my DHCP. How my clients can have access to internet. Here is my hardware setup: 1. I connect clients PC and one DHCP server in one unmanaged switch2. I have my Bell DSL Modem but not connected yet to one of these machines. I do not know how I can configure it yet to work with my machines.The IP I assigned started at to do I connect the DSL and configure so that it may give everyone access to internet?

View 1 Replies View Related

Servers :: Unable To Get DHCP IP From 2008 R2 DC ISA 2006

Mar 6, 2012

I have Server 2008 R2 DC & One ISA server 2006 enterprise. im facing problem with DHCP unable to give DHCP IP from internal LAN. Its taking IP from External LAN IP i.e. connected to Linksys external Router which has DHCP enabled with different IP class i.e .class B. After shutdown client PC it will take no IP will be assigned & says linited connectivity.

View 4 Replies View Related

Cisco WAN :: C1700 - How To Automatically Add DNS Servers From ISP Into DHCP

Dec 27, 2010

I have cisco router C1700. Interface FastEthernet0 is connected to ISP and obtain public IP and DNS via dhcp.On interface FastEthernet1 is connected private network. On router is configured dhcp pool that assigns addresses to private network connected on FastEthernet1. Is there configuration that automatically add the DNS servers from my ISP into the DHCP pool?

View 5 Replies View Related

Servers :: Dhcp Services Affecting Network Connectivity?

Jan 31, 2012

win 2003 dhcp server. when I leave dhcp services OFF i can ping the server fine. once i turn ON dhcp services the connecting drops in and out.. what is going on here?
My users are unable to get a steady connection to the dhcp server.

View 8 Replies View Related

Cisco :: 3550 Implementing Multiple DHCP Servers

May 2, 2011

i have the following scenario that i'm requesting you guys verify if it will work.I have a 3550 catalyst switch running EMI and an auotomous 1131AG aironet ap, i have two dhcp pools already setup on the switch one for the LAN and the other for the wireless clients.There  are two vlans on both the switch and ap for LAN and wireless clients.I have already setup multiple SSID's to be broadcasted from the AP, is there a way i can bind one SSID  to the lan dhcp pool and the other to the wireless clients dhcp pool?

View 1 Replies View Related

Servers :: DHCP Server Failed On Diagnostic Test Windows

Jul 29, 2011

dhcp server failed while running network diagnostic test for windows xp

View 1 Replies View Related

Cisco Wireless :: WLC2106 Pointing 2 Different WLANs To DHCP Servers

Feb 15, 2013

I have a WLC 2106 which is configured and working as follows: [code] how do i get the AP at Site B to use the local server (10.0.28.x) to hand out DHCP leases?

View 3 Replies View Related

Cisco Firewall :: ASA 8.4 / NAT Some Subnets To One IP And Other Subnets To Another IP?

Aug 15, 2012

I need to NAT some subnets to one IP and other subnets to another IP. The range command want work because some of the subnets are out of order.For example  subnets - and, nat'd to  subnet nat'd to

View 2 Replies View Related

Cisco Switching/Routing :: C3750 - How To Configure 2 DHCP Servers For Two User Vlans

May 1, 2012

I can't seem to find any info on how to configure 2 DHCP server pools on a C3750, to use with 2 user vlans. The purpose is that users in vlan 1 should get an IP address from DHCP server1, and users in vlan 2 should get an IP address from DHCP server2. Both DHCP servers are configured in a stack of C3750 switches, which acts a a L2 switch.

View 2 Replies View Related

Cisco Switching/Routing :: 2601X / NAT Translations DHCP And Access To Internal Servers

Jan 19, 2013

I'm using a 2601X router connecting to a broadband connections.  The following NAT connections is working but I need to do NAT exemptions to set up my VPN appliance on the DMZ.  I see a lot of documentation on how to use a pool of public addresses to do that, but I only have the one dhcp address from my isp. 

boot system flash:c2600-adventerprisek9-mz.124-25d.bin
interface FastEthernet0/0


View 5 Replies View Related

Cisco Switching/Routing :: Catalyst 3560X-24T-S - Setup DHCP Servers On Layer 3 Switch?

Apr 1, 2012

Do you have the ability to setup DHCP servers on this layer 3 switch? I know I can with my old 3550 switch. Want to upgrade and make sure this model supports setting up dhcp servers on it.

View 3 Replies View Related

Linking Two Wireless Routers?

May 17, 2011

I have a Netgear WPN824N and a Linksys E1000N routers. The linksys is connected to the cable modem and the netgear wan port is connected to the "2" port on the linksys. Computers connecting to the netgear can connect to the internet ok. But devices on the netgear network cannot connect to devices on the linksys network and vice versa.Can anybody explain to me how to set up so devices connected on one router can identify and communicate with devices on the other?

View 2 Replies View Related

D-Link DIR-655 :: Not Linking Up With SB6120 Modem

Oct 21, 2011

I called up the ISP and had him activate the Sb6120 modem.The Dir-655 will not link up with the Sb6120 unless I drop the WAN port speed down to 10MB. Then it will connect. (the light on the modem will come on). I thought the modem was bad so I had the ISP deactivate that one and we tried another Sb6120 samething.I did the firmware update on the Dir-655 to current but samething.

Firmware Version :1.35NA,  2010/11/12

View 4 Replies View Related

Cisco WAN :: 837 / Linking ATM0 To Ethernet0?

Feb 16, 2011

I have been trying to configure a 837 for a while now and I'm finally nearly there. So far the tests run(SDM interface test) and pass on atm0(WAN connection to the internet) but not on ethernet0. I am guessing i need to link them somehow but since I don't know the terminology searching for how to do it is turning out to be difficult.
Here is my config:
!This is the running config of the router:
!version 12.3
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption


I tried ip route Dialer0 first with no luck to i added the ip route ATM0 still nothing?

View 8 Replies View Related

Cabling / Cards :: Linking More Than One Device To Router?

Jan 23, 2012

I don't know if this is the right place to ask but pretty sure you'll be able to answer my Q. I have to have my internet router/modem in the kitchen as its the only phone point in my flat currently working, but my partner has to run an ethernet cable down the hall from there to hook up his xbox 360. however, I want to be able to use ethernet for my laptop occasionally to get a better speed then over wireless as the wireless isn't perfect from the room i'm in and wondered what the best way to go about this was. I could also plug in my PS3 if there was a way to get all my devices connecting to the router without too many cables. I've heard of a switch.. what does this do? Or will a simple ethernet connector work for what I wanna do

View 3 Replies View Related

Will Linking 3 Computers Through Switch On Network Be Faster

Feb 22, 2013

In one area, we have a server, and two computers that use that server extensively. Right now all the computers are on wi-fi.I know if I ran the computers through a switch they could share data more quickly. The problem I have is there is no way to get a cat connection to this area.If I got a range extender with switching ports built-in would it still speed this data up? Or would it be irrelevant because it still has to travel via wi-fi to the router and back?

View 1 Replies View Related

Linking TPLink As Access Point To DLink Router?

Dec 12, 2011

I want to link a tp link router as access point to a d-link router.

View 2 Replies View Related

Dell Laptop Not Linking To Wifi And Disrupting Other Computer

Jun 15, 2012

Dell laptop over the last two weeks will not link to wifi at home.I use it at work and it's fine. Does not cause any issues for anyone else on wifi network at work. Hooks right up to their system, no problem.However, when I get home, it will not link back up to home wifi. It will also disengage the desktop computer from the wifi as well.Even if desktop is off, it will not link with home wifi.

View 19 Replies View Related

Linking Kodak Esp 3.2s Printer To Fujitsu Siemens Laptop

Jan 5, 2013

I have an esprimo fujitsu seimens laptop and have just purchased a kodak esp 3.2s printer. I have a belkin router and am unable to install the printer, it is not recognising the router.

View -1 Replies View Related

Copyrights 2005-15 www.BigResource.com, All rights reserved