Making Switch as DHCP server

We have cisco 2950 switch. can we use it as dhcp server in our network if yes then how ?
Please give me all commands to make it DHCP server.

Hi Blue,
i completely i won't accept the rest of ppl. say that DHCP is not supported on Cisco 2950, infact i am running dhcp server on my cisco 2950T-24 for the past 10 months IOS ver 12.1-22.EA6
find the commands
ip dhcp excluded-address 10.1.1.51 10.1.1.60
ip dhcp pool xyz
network 10.1.1.0 255.255.255.0
domain-name abc.org
dns-server 10.2.1.31
default-router 10.1.1.252
ip dhcp-server 10.1.1.250
hope this helps.
rate this post if cleared.

Similar Messages

Flexconnect - Local Switching and DHCP Server Location

Hello Friends, It is again a conceptual question.
In Flex-connect Local Switching mode if the Client has to be get the IP address using DHCP, the DHCP server has to be local to the remote site and not centralized location. Though i know, Local switching means that the client traffic is bridged to the local network directly by the AP on the locally connected switch and does not pass through the controller, what does it mean to DHCP server location.
For example, If I have 2 different WLANs (VLAN 2 and VLAN 3) configured Local Switching and its corresponding VLAN SVIs are configured in the Local L3 Switch and if the DHCP server is centrally located with the scopes for VLAN 2 and VLAN 3, will it have troubles?
I see in my infrastructure we are working in that way [Local switching with centralized server]
Thanks in advance
SAIRAM

It would be good to have DHCP server at local site.

Window DHCP Server is not allocting IP to Voice Vlan

Hi,
I HAVE 3560 Switch, Over that two vlan configure Data & Voice respectively. Voice id Vlan 1 and Data Id Vlan 2.Routing is done on this switch and work as L3
DHCP Server is member of Data Vlan which is connected to another 3560 Switch L2. DHCP Server is reachable.On that both vlan configured.
Switch Port configure fr both Vlan ( Switchport access vlan 2 , Switchport voice vlan 1, Switchport mode access)
WHILE Connect any pc to port DHCP server assign ip frm Data Pool while Cisco Ip phones are not getting IP. OPTION 150 is configured in DHCP.
Over both interface IP Helper is configured and pointing to DHCP Server.
For testing point configure DHCP service on switch with voice pool range ;at that moment Cisco IP phone got the IP fron switch DHCP.
Now not able to understand why window dhcp server not assigning ip for Voice.
Both Vlan are in different subnet and having / 24.
Please guide

Hi,
Checked all configuration in network,apply packet tracer and found DHCP not responding on DHCP Req.
Replace DHCP server and now working fine. :)

Can I use DHCP snooping and IOS DHCP server on the same switch stack

Hello,
I am shortly going to be deploying a Cisco CallManager solution for a customer whose network comprises stacks of Catalyst 3850 switches.
There is no separate core/server farm switch so the CallManager servers, voice gateways and IP phones will all plug into the same stack and be in the same VLAN (not my choice!).
For security we want to enable DHCP snooping and were planning on using the IOS DHCP server on the Catalyst switch stack.
Will this work? - when I enable DHCP snooping in networks with separate access layer switches I set the uplinks to the core as trusted links.
I am not sure whether DHCP snooping will work in this case. Do I need to set the VLAN interface on the switch as trusted, is this even possible?
Unfortunately I do not have access to a layer 3 switch to test this at the moment.
Thanks

Nope. That's the issue.
They'll sync on a third device acting as a hotspot, but the device sending a signal is not "on" the network it creates so the airport is all by itself on that network. At least that is what it looks like to me. Anyone have another take on it? Seems pretty silly that an iPad can put out a wifi signal, an Airport Express can receive a wifi signal, and yet there is no simple way to get them to communicate under this particular condition.

Snmp query on a dhcp server (low routers or L3 switches)

Hello,
is possible to monitor dhcp binding or free addresses using snmp? I found the following MIB: CISCO-IETF-DHCP-SERVER-MIB, but this MIB is supported only on the Cisco 7300, 7200 series.:-( When I tried snmpwalk on the Catalyst3560, but the CISCO-IETF-DHCP-SERVER-MIBoids is not supported:-( So the question is following: Is possible to monitor DHCP leases using SNMP on the low end Cisco platforms (800,1700, 1800, 26xx, 28xx..., Cat3560, Cat3560E, Cat3750, ...)? Thank you. Roman

You can do this with EEM and the EXPRESSION-MIB. Take a look at the script at
http://forums.cisco.com/eforum/servlet/EEM;jsessionid=BC017F546ECE38762F78BCF6270D6A77.SJ5A?page=eem&fn=script&scriptId=2283 . I just used this script today to do exactly what you want. I created objects to be able to poll my number of outstanding leases and my overall pool size.

Dhcp server won't admit my Arch Linux (though Win's have no problems)

1. Generally my dhcpcd works fine in every network (and always has, I have not changed anything substantial).
2. Currently I am in a network (for just a couple of weeks) in which it does not.
3. The network will ignore all my dhcp requests over both network devices, enp1s0 and wlp2s0 (ethernet and wifi)
4. When trying the same from Windows (dual boot), the dhcp client works brilliantly (i.e. the hardware is fine)
5. I can force entry into the cable network by simply assigning an IP address and setting netmask and gateway as was configured by dhcp when I tried from Windows
6. For wifi this does not work. More specifically it works for a brief moment if (and only if) I was connected from Windows immediately before and assign myself the same IP address (I can ping the gateway and also 8.8.8.8). After this moment the network apparently kicks me out (cannot ping anything any more, nothing answers). dhcpcd inform (dhcpcd -s <IP Adress>) does not fare better.
7. I tried changing some of the settings in dhcpcd.conf that have been given as reasons for similar problems in the forums, archwiki, or somewhere else, including exchanging 'duid' for 'clientid', and commenting out 'require dhcp_server_identifier'. Does not help. My dhcpcd.conf, see below.
8. dhclient does not work either.
What I want: Connect to the internet via wifi from Arch.
I guess this comes down to making the dhcp server believe my Arch was one of the Windowses it is used to. How do I do that?
I understand that dhcp does not involve clients revealing their operating systems to the servers; but some configurations are likely different between Arch and Windows. I am not used to working with Windows and have no idea how to access the dhcp client configuration settings there (if this is even possible) to get an idea what exactly is different. Here is my dhcpcd.conf - any ideas what exactly about it displeases the server so much or what I might change or add to make the server more pleasantly inclined?
dhcpcd.conf
hostname
clientid
#duid
persistent
option rapid_commit
option domain_name_servers, domain_name, domain_search, host_name
option classless_static_routes
option ntp_servers
#require dhcp_server_identifier
nohook lookup-hostname
noipv4ll
I would include the logs as well, but they are boring beyond belief, do not contain anything except for dhcpcd trying and failing with timeout.

Thanks, MoonSwan & ewaller,
MoonSwan wrote:Windows' IP address and network settings navigate to: Control Panel -> Network and Internet -> Network Connections -> Click on Device Here (WIFI or LAN) -> Properties and from there you should be able to see the settings you need to figure out what's going on in Windows.
Found that, There are a lot of "Advanced properties", for instance "Bandwidth Capacity" is set to "11b/g: 20MHz", "BSS Mode" is set to "802.11n Mode", "Fragmentation Threshold" to "2346" (whatever that may mean) ... etc. Unfortunately, I cant copy any of that; most of it also seems rather unimportant; also I left all this on its default setting when I followed the instructions on how to connect to this wifi on Windows.
However, here is some information I managed to squeeze out of the pathetic, pittyful Windows terminal which they call the "Comand Line"
C:\Windows\system32> ipconfig /all
<...>
Wireless LAN adapter Wireless Network Connection:
Connection-specific DNS Suffix . : <the network name>
Description . . . . . . . . . . . : <hardware description> 802.11b/g/n (2.4GHz)
Physical Address. . . . . . . . . : <the mac address>
DHCP Enabled. . . . . . . . . . . : Yes
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : <some ipv6> %13(Preferred)
IPv4 Address. . . . . . . . . . . : <the ipv4> (Preferred)
Subnet Mask . . . . . . . . . . . : <subnet mask>
Lease Obtained. . . . . . . . . . : Fri, 23. May 2014 19:47:10
Lease Expires . . . . . . . . . . : Fri, 23. May 2014 21:17:09
Default Gateway . . . . . . . . . : <gateway ip>
DHCP Server . . . . . . . . . . . : <some ip that is not part of the local subnet>
DHCPv6 IAID . . . . . . . . . . . : 319352249
DHCPv6 Client DUID. . . . . . . . : 00-01-00-01-18-9F-0F-D6-E0-DB-55-CF-26-6
DNS Servers . . . . . . . . . . . : <a few dns server ip's>
NetBIOS over Tcpip. . . . . . . . : Enabled
Tunnel adapter Teredo Tunneling Pseudo-Interface:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : <some ipv6> (Preferred)
Link-local IPv6 Address . . . . . : <another ipv6> %12(Preferred)
Default Gateway . . . . . . . . . :
NetBIOS over Tcpip. . . . . . . . : Disabled
Tunnel adapter 6TO4 Adapter:
Connection-specific DNS Suffix . : <the network name>
Description . . . . . . . . . . . : Microsoft 6to4 Adapter
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv6 Address. . . . . . . . . . . : <some ipv6> (Preferred)
Default Gateway . . . . . . . . . : <another ipv6>
<yet another ipv6>
DNS Servers . . . . . . . . . . . : <the same ipv4 dns server ip's as above>
NetBIOS over Tcpip. . . . . . . . : Disabled
C:\Windows\system32> netsh wlan show all
Wireless System Information Summary
(Time: 23.05.2014 20:38:49 W. Europe Daylight Time)
=======================================================================
============================== SHOW DRIVERS ===========================
=======================================================================
Interface name: Wireless Network Connection
Driver : <hardware description> 802.11b/g/n (2.4GHz)
Vendor : Broadcom
Provider : Broadcom
Date : 21.01.2012
Version : 6.20.55.31
INF file : C:\Windows\INF\oem25.inf
Files : 5 total
C:\Windows\system32\DRIVERS\BCMWL664.SYS
C:\Windows\system32\bcmihvsrv64.dll
C:\Windows\system32\bcmihvui64.dll
C:\Windows\system32\drivers\vwifibus.sys
C:\Windows\system32\bcmwlcoi.dll
Type : Native Wi-Fi Driver
Radio types supported : 802.11n 802.11g 802.11b
FIPS 140-2 mode supported : Yes
Hosted network supported : Yes
Authentication and cipher supported in infrastructure mode:
Open None
Open WEP
Shared None
Shared WEP
WPA2-Enterprise TKIP
WPA2-Personal TKIP
WPA2-Enterprise CCMP
WPA2-Personal CCMP
WPA2-Enterprise Vendor defined
WPA2-Enterprise Vendor defined
Vendor defined Vendor defined
Vendor defined Vendor defined
Vendor defined TKIP
Vendor defined CCMP
Vendor defined Vendor defined
Vendor defined Vendor defined
WPA-Enterprise TKIP
WPA-Personal TKIP
WPA-Enterprise CCMP
WPA-Personal CCMP
Authentication and cipher supported in ad-hoc mode:
WPA2-Personal CCMP
Open None
Open WEP
IHV service present : Yes
IHV adapter OUI : [00 10 18], type: [00]
IHV extensibility DLL path: C:\Windows\System32\bcmihvsrv64.dll
IHV UI extensibility ClSID: {aaa6dee9-31b9-4f18-ab39-82ef9b06eb73}
IHV diagnostics CLSID : {00000000-0000-0000-0000-000000000000}
=======================================================================
============================= SHOW INTERFACES =========================
=======================================================================
There is 1 interface on the system:
Name : Wireless Network Connection
Description : 802.11b/g/n (2.4GHz)
GUID : 6d122ca5-cdc2-42d1-a1fb-3754098b19eb
Physical address : <the mac address>
State : connected
SSID : <ssid>
BSSID : <access point mac address>
Network type : Infrastructure
Radio type : 802.11n
Authentication : WPA2-Enterprise
Cipher : CCMP
Connection mode : Auto Connect
Channel : 1
Receive rate (Mbps) : 72
Transmit rate (Mbps) : 72
Signal : 83%
Profile : <ssid>
Hosted network status : Not available
=======================================================================
=========================== SHOW HOSTED NETWORK =======================
=======================================================================
Hosted network settings
Mode : Disallowed
Settings : <Not configured>
Hosted network status
Status : Not available
=======================================================================
============================= SHOW SETTINGS ===========================
=======================================================================
Wireless LAN settings
Show blocked networks in visible network list: No
Only use GP profiles on GP-configured networks: No
Hosted network mode allowed in WLAN service: No
Allow shared user credentials for network authentication: Yes
Block period: Not Configured.
Auto configuration logic is enabled on interface "Wireless Network Connection"
=======================================================================
============================== SHOW FILTERS ===========================
=======================================================================
Allow list on the system (group policy)
<None>
Allow list on the system (user)
<None>
Block list on the system (group policy)
<None>
Block list on the system (user)
<None>
=======================================================================
=========================== SHOW CREATEALLUSER ========================
=======================================================================
Everyone is allowed to create all user profiles.
=======================================================================
============================= SHOW PROFILES ===========================
=======================================================================
Profiles on interface Wireless Network Connection:
Group policy profiles (read only)
<None>
User profiles
All User Profile : <ssid>
<other profile names>
=======================================================================
========================== SHOW PROFILES NAME=* =======================
=======================================================================
Profile eduroam on interface Wireless Network Connection:
=======================================================================
Applied: All User Profile
Profile information
Version : 1
Type : Wireless LAN
Name : <ssid>
Control options :
Connection mode : Connect automatically
Network broadcast : Connect only if this network is broadcasting
AutoSwitch : Do not switch to other networks
Connectivity settings
Number of SSIDs : 1
SSID name : "<ssid>"
Network type : Infrastructure
Radio type : [ Any Radio Type ]
Vendor extension : Not present
Security settings
Authentication : WPA2-Enterprise
Cipher : CCMP
Security key : Absent
802.1X : Enabled
EAP type : Microsoft: Protected EAP (PEAP)
802.1X auth credential : Machine or user credential
Cache user information : Yes
<other profiles ...>
=======================================================================
======================= SHOW NETWORKS MODE=BSSID ======================
=======================================================================
Interface name : Wireless Network Connection
There are 4 networks currently visible.
SSID 1 : eduroam
Network type : Infrastructure
Authentication : WPA2-Enterprise
Encryption : CCMP
BSSID 1 : <other access point ssid>
Signal : 2%
Radio type : 802.11n
Channel : 11
Basic rates (Mbps) : 1 2 5.5 11
Other rates (Mbps) : 6 9 12 18 24 36 48 54
BSSID 2 : <other access point ssid>
Signal : 0%
Radio type : 802.11n
Channel : 11
Basic rates (Mbps) : 1 2 5.5 11
Other rates (Mbps) : 6 9 12 18 24 36 48 54
BSSID 3 : <access point ssid>
Signal : 87%
Radio type : 802.11n
Channel : 1
Basic rates (Mbps) : 1 2 5.5 11
Other rates (Mbps) : 6 9 12 18 24 36 48 54
BSSID 4 : <other access point ssid>
Signal : 0%
Radio type : 802.11n
Channel : 1
Basic rates (Mbps) : 1 2 5.5 11
Other rates (Mbps) : 6 9 12 18 24 36 48 54
SSID 2 : <...>
What I find odd is this "Taredo Tunneling Pseudo-Interface". As a matter of fact, I have not the slightest idea if this is happening inside this local Windows I have here or if this is something real in the network configuration (on the other side of the access point)... It apparently should tunnel IPv6 to IPv4 and/or vice versa. However, why would there be two connections over the same network interface (IPv6 and IPv4)...
What is odd as well is that the DHCP server is not part of the subnet my Windows is in. It just seems to announce IP, netmask, gateway to the Windows ... (the gateway is in the subnet). Could it be that the Linux dhcp client does not accept something like that. No, that's unlikely, right? dhcpcd -d should have reported this...
MoonSwan wrote:Btw, love the name,
Thanks. Likewise
MoonSwan wrote:it's nice to see such a name after seeing so many that are intentionally hurtful to others of any stripe in a rainbow.
Actually, I always felt that the Arch Forum is quite tolerant in this respect. (And so is reddit, but of course, you are right, there are places on the internet where you can run into a lot of assholes. Kind of like in the real world... Quite frustrating.)
ewaller wrote:I guess it could be a MAC problem. but I don't know.
Unlikely; on windows the mac address is the same.
ewaller wrote: Can you get to the router logs? Can you see if the router saw a solicitation?
no. and given their network configuration I don't suppose the IT people here would be very forthcoming if I asked them. Their helpdesk said that they couldn't help me since my laptop was not one of their computers.
ewaller wrote:Also, (just a sanity check) are you sure you are connected to the correct access point? But that does not make sense -- you said this happens on wired as well sad
Dang.
I am. It's WPA2 encrypted & I only have access data to this one wifi network. (To avoid confusing everyone with mentioning too many different things, I did not detail this in the original post. I am accessing it using wpa_supplicant running in a terminal; wpa_supplicant works fine says "connection succeeded" etc. So the problem is not in the WPA/ wifi-connection layer but really in the IP/dhcp layer.)
ewaller wrote:Is this a corporate environment? A school perhaps?
Yes, a university. They have someone working here who went through great lengths to make it difficult for people to connect to the internet.

Can you use the Airport Express A1264 as an AP and a DHCP server at the same time?

Can you use the Airport Express A1264 as an Access Point and a DHCP server at the same time?
I would like to use it as a DHCP server and AP at the same time in my LAN (no internet, just local machines through a few switches). I was lead to belive this could be the case from a few networking friends that haven't been friendly enough to help me out setting it up.

I need it to act as a dLink/Cisco/Linksys/etc basic wifi router, in the fact that you can access it via wifi, and it will spit out DHCP addresses (192.168.1.xxx) to everything wired downstream of it.
I want to simultaniously provide a Wifi connection and a LAN connection at the same time
Thanks,
BRad

Can I use my WRT54G as a DHCP server only? I've got 5 dynamic IP's from Time Warner..

Hi everyone, I'm wondering if I can use my WRT54G as a DHCP server only only my network, without having to have any of my PC's plugged into it's router ports? I looked at the settings but I couldn't get it to work.
Here's why: I just got Time Warner Business Class cable internet which comes with 5 dynamic IP's. I want each computer, well 4 of them at least and 1 for the WRT54G, to have a unique IP when accessing the internet, and the other computers (5 more computers) to use the DHCP server in the WRT54G to get a NAT IP for use on the internet.
We play Diablo II on the internet and only 4 computers can be connected through 1 IP, so that limits us in my current configuration.
Current Equipment: One WRT54G, one Netgear GS116 16 port gigabit non-managed switch. One Time Warner Cable modem. Also attached to the network is one HP network printer, a Buffalo LinkStation NAS and a Zensonic Network DVD player.
Current config: Cable modem --> WRT54G --> Netgear switch.
Ideal config: Cable modem --> Netgear switch --> WRT54G.
With my current config, I am not taking advantage of the 5 dynamic IP's, but all the computers connected to the Netgear switch or the WRT54G can connect to the internet and the NAS.
So my ideal config (where I don't have to buy anything and where all the computers can print and access the NAS) is to connect all the computers and devices to the Netgear Switch and somehow force 4 of the computers and the WRT54G to get a dynamic IP from the cable modem, while the other computers and devices use the DHCP server on the WRT54G to get to the internet.
Is this possible?
I called Time Warner Cable and they weren't any help. I called the Linksys sales department and they weren't of much help either.
I suppose that I could purchase a new 8 port switch and attach 4 computers, the cable modem and the WRT54G to it. Then attach the Netgear to the WRT54G to accomodate the printer, NAS, and the other 5 computers. But in that senario, the 4 computers connected to the new switch can't print and can't reach the NAS. And geez, some computers would have to go through 3 devices to reach the internet, which has got to slow them down.
I did read about the Linksys EFG120 which has a DHCP server, but at $400 and only 120 gigs, it doesn't work for me.
I called Time Warner and the cost of more dynamic IP's is prohibitive, I'm already paying $79 a month for this internet and they want another $50 a month for 7 more dynamic IP's and that wouldn't help my NAS or my printer.
The cost of a 16 port gigabit switch with DHCP is an amazing $800 or so, which is out of the question.
Sorry for being so long winded and thanks for reading this far. I'm looking forward to any replies.

That is a hell of a setup. I don't know if it would be easier and cheaper to either buy a real router like a Cisco, get fixed IP addresses and a RV042, or buy 4 network cards for the four of the five computers which need the internet access for gaming.
O.K. First your setup:
1. You wire the modem to the 6-port switch.
2. You connect the remaining 5 ports with the WAN ports of 5 WRTs with DHCP on the WAN interface.
3. You configure each WRT with unique LAN IP addresses in the same subnet, e.g. 192.168.1.1/255.255.255.0, 192.168.1.2, 192.168.1.3, 192.168.1.4, 192.168.1.5.
4. You turn off all DHCP servers except on one, e.g. 192.168.1.1. That router will be the default router and internet connection for any client which gets dynamic LAN addresses (as fallback or guests, I would not configure the NAS or printer with DHCP addresses if you have everything else on static IP addresses). You can certainly disable all DHCP servers if you want, too.
5. Now you connect all WRTs with each other.
5a. You connect port 1 of the 1st WRT with port 1 of the 2nd.
You connect port 2 of the 2nd with port 1 of the 3rd.
Port 2 of the 3rd with port 1 of the 4th.
Port 2 of the 4th with port 1 of the 5th.
(Do not create a loop connecting port 2 of the 5th with port 2 of the 1st!!)
5b. You buy another switch and connect each port 1 of each router with this switch. This has the advantage that you don't have a long cascade between the 1st and the 5th router like in 5a.
6. You connect all devices to the LAN.
6a. If you did 5a, you will probably put each computer to the router which internet connection it uses. The NAS and printer could go anywhere.
6b. If you did 5b, you hopefully bought a 16 or 24 port switch. Then you plug simply everything into that switch. Otherwise you can certainly use the free ports of the WRTs like in 6a.
7. You configure all your devices with static IP addresses. For instance,
IP 192.168.1.11
netmask 255.255.255.0
gateway 192.168.1.1
For the DNS servers I would highly recommend to use the DNS servers of your ISP directly and not use the relay on 192.168.1.1.
The gateway address defines through which router the computer connects to the internet.
8. You may still have to configure port forwardings on the router to the game computer if required for the game.
An interesting alternative to this setup might be to buy 4/5 network cards for the 4/5 computers with direct internet access. Then you use the one network card to connect to your single LAN behind your single WRT. The other network card goes into the switch behind the modem and has direct internet access. You then have to tell Windows which of the network cards has the default gateway for the internet connection (to prevent routing all traffic through the LAN and the WRT to the internet). One game computer would have to be behind the WRT.

Can some one translate these instructions D-Link DI-524: installation as wireless HUB/Bridge General ON ALL TYPES OF ROUTERS DHCP SERVER HAS TO BE DISABLED ON ALL TYPES OF ROUTERS UPnP ALSO HAS TO BE DISABLED OTHERWISE YOU CAN SEVERELY HINDER OTHER USE

D-Link DI-524: installation as wireless HUB/Bridge
General
ON ALL TYPES OF ROUTERS DHCP SERVER HAS TO BE DISABLED
ON ALL TYPES OF ROUTERS UPnP ALSO HAS TO BE DISABLED
OTHERWISE YOU CAN SEVERELY HINDER OTHER USERS IN YOUR NEIGHBOURHOOD!
Practical example: D-Link DI-524
The DI-524 is a wireless router.Although the manufacturer doesn't mention this, you can also install this device as a wireless hub.Of course this is not supported by the manufacturer. Therefor you have nowhere to go in case of any problems Plug in the power cord of the DI-524. Do not yet connect the network cable!Search for existing wireless networks with your computer. Connect with the router.This can for example be done like this:
Click the start-button (at the bottom in the left corner of your screen).
Go to control panel
Go to internet connections (you may have to choose classic representation first)
You can now see your wireless network card, among other things. Right-click and 'View available Wireless networks'.
Connect to the router. In most cases the router will be called 'default'.Check your IP-address: you get an IP address from the DI-524
Go to the start-button
Go to 'Run'
Type 'cmd' and press enter
type 'ipconfig' and press enter
your IP address starts with 192.
Surf to your router with your regular browser. For this you need the address and a password, which you can find in the documentation.
In this case the address is 192.168.0.1
Now you must secure the router. For this it is best to use WPA-PSK
Your key is a randomly chosen sentence. Don't make this sentence too short.
Warning: Case sensitive!
You cannot reach the router anymore now.
Go back to your network card via "make connection". Search for your wireless network again and make a new connection
You are asked for a key. Supply this key the way you configured it in your router.
Surf back to the router.
Disable the DHCP server.
!! YOU HAVE TO DISABLE UPnP ON ALL TYPES OF ROUTERS
OTHERWISE YOU CAN SEVERELY HINDER OTHER USERS IN YOUR NEIGHBOURHOOD!
for this, go to Tools, Misc and switch off UPnP
Save these settings.
If you do not have a D-link router, look up in the manual or somewhere else where you can disable UPnP
Now you cannot reach the router anymore again.
It is only from this moment that you can connect the router to the modem.
Important: Use one of the 4 LAN ports. Never use the WAN port!
Go to your network card via the control panel. Right-click and "Repair"
Now you should get an IP-address in the range of 10.nnn.nnn.nnn
If you still don't have 192... you've made an error. The DI-524 still functions as a router and this is not allowed!

There are no Mac based instructions. The router is accessed and adjusted the same way whether you are using a Mac OS X, Windows or Linux. As noted in the other post it is done through your web browser which works the same from any computer. Even a Chrome Book.
akertrav wrote:
Thank you for that what I have been trying to do is extend the range of my wifi witha second dilink router. I was hoping for some mac based directions to achive this rather than the PC based as presented. Thank you for your ireply Paul

Two questions about SG300 DHCP server

Hi,
I have two questions about the DHCP server on the SG300:
On the Address Binding page, what does the "Declined" state mean? I have a NAS device that won't pull an address, and I think that the entry with a state of "Declined" corresponds to this device. It was previously pulling an address from a RV180, so the only difference is that it is now connected to the SG300. I worked around this by manually setting the address on the NAS device, but this won't scale if I run into a lot of other devices that can't pull an address.
I configured a static address binding for a WAP321 and found that instead of pulling the configured address that it pulled a dynamic address. I checked the Address Binding page and see that the dynamic entry that corresponds with the WAP321 has a Client Identifier rather than a MAC address. I changed the static entry for the WAP321 to use the client identifier displayed in the dynamic entry, and now the WAP321 pulls the configured static address. Is this expected behavior?
Thanks,
Bob

With the SX300/500 it is required the client identifier, it doesn't automatically insert it. If static DHCP is made on the switch and you didn't need client identifier, that is more or less fortunate behavior for you
So to answer this question, the expected behavior is to configure client identifier for static DHCP entry.
-Tom
Please mark answered for helpful posts
http://blogs.cisco.com/smallbusiness/

Clients Not seeing DHCP server at branch office or not accepting ip offers (NO LOG REPORTS KIND OF IN THE DARK)

Hi there i am having an issue that has popped up recently i have a DC at a branch office that is connected to the main office DC via a Persistent Demand Dial connection in RRAS. Everything was working properly according to me until i found out that the Network
Admin who manages the branch office network failed to notify me that client machines weren't getting IP addresses from the DHCP server. This server was recently installed and wasn't fully implemented till about a week ago when i configured the Demand Dial
connection in RRAS up until that point it just had a regular old VPN connection to the main office while we worked out the kinks with a few things. the things ive tried so far to get DHCP working are as followed
1.Rebooted the branch office server (MULTIPLE TIMES)
2. Uninstalled the DHCP Role and re-installed it....To my surprise 1 client managed to get a ip on its lan adapter after DHCP was re-installed but nothing else
3. Disconnected the connection between the main office DC and the Branch office DC as i figured the main office DC DHCP server might be interfering with the branch office DC DHCP Server but nothing happened
4. Unauthorized and Reauthorized the main office DHCP server and the branch office DHCP server nothing changed
5. sifted through multiple log files on both servers and found noting in fact DHCP logs are empty on both servers
6. restored backups of the DHCP servers from when they were working
7. came here cause im out of ideas and im pulling my hair out
here are the current statistics from the problem server
Start Time: 7/12/2014 2:02:10PM
Up Time: 1Hours, 18 Minutes, 41 Seconds
Discovers: 90
Offers: 90
Requests: 2
Acks: 13
Nacks: 0
Declines: 0
Releases: 0
Total Scopes: 1
Total Addresses 253
In Use 2 (0%)
Available: 251 (99%)
Id like to add that RRAS was getting IP addresses from the problem server up until the point i uninstalled the role and re-installed it
heres is a ipconfig /all from the problem server
Windows IP Configuration
Host Name . . . . . . . . . . . . : MNB-DC
Primary Dns Suffix . . . . . . . : VTEACR.LOCAL
Node Type . . . . . . . . . . . . : Hybrid
IP Routing Enabled. . . . . . . . : Yes
WINS Proxy Enabled. . . . . . . . : No
DNS Suffix Search List. . . . . . : VTEACR.LOCAL
PPP adapter Remote Router:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Remote Router
Physical Address. . . . . . . . . :
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 10.141.70.25(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : 10.141.70.10
NetBIOS over Tcpip. . . . . . . . : Disabled
Ethernet adapter Local Area Connection:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Broadcom NetXtreme Gigabit Ethernet
Physical Address. . . . . . . . . : 00-16-35-AB-D3-05
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Link-local IPv6 Address . . . . . : fe80::d9e:daa4:34dd:db44%10(Preferred)
IPv4 Address. . . . . . . . . . . : 10.141.80.102(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.0
Default Gateway . . . . . . . . . : fe80::226:5aff:feb7:5b3c%10
10.141.80.1
DNS Servers . . . . . . . . . . . : ::1
10.141.80.102
NetBIOS over Tcpip. . . . . . . . : Enabled
PPP adapter RAS (Dial In) Interface:
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : RAS (Dial In) Interface
Physical Address. . . . . . . . . :
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
IPv4 Address. . . . . . . . . . . : 169.254.238.243(Preferred)
Subnet Mask . . . . . . . . . . . : 255.255.255.255
Default Gateway . . . . . . . . . :
DNS Servers . . . . . . . . . . . : fec0:0:0:ffff::1%1
fec0:0:0:ffff::2%1
fec0:0:0:ffff::3%1
NetBIOS over Tcpip. . . . . . . . : Disabled
Tunnel adapter Local Area Connection* 8:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.{427DF66B-3B30-40B1-B67E-B5587465C
394}
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 9:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Teredo Tunneling Pseudo-Interface
Physical Address. . . . . . . . . : 02-00-54-55-4E-01
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 11:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.ziricom.com
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 12:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.VTEACR.LOCAL
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 13:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.{BE201060-A9B9-404A-8361-F8FFB82F5
6F6}
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 14:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #5
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 15:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.VTEACR.LOCAL
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 16:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : Microsoft ISATAP Adapter #7
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
Tunnel adapter Local Area Connection* 19:
Media State . . . . . . . . . . . : Media disconnected
Connection-specific DNS Suffix . :
Description . . . . . . . . . . . : isatap.ziricom.com
Physical Address. . . . . . . . . : 00-00-00-00-00-00-00-E0
DHCP Enabled. . . . . . . . . . . : No
Autoconfiguration Enabled . . . . : Yes
if anymore information is needed please let me know i have full access to everything on the network so its not a problem and i am able to remotely access the branch office DC and all computer and switches at any time of the day
Viper Technologies Computer Repair Putting The Venomus Bite Back In Your Computer We Are Located In Antigonish ,NS Canada Check Us Out HTTP://WWW.VIPERTECHNOLOGIES.TK

Hi,
Does this issue occur on one client or multiple?
Please check this article:
http://technet.microsoft.com/en-us/library/cc757164(v=ws.10).aspx#BKMK_5
Regards.
Vivian Wang

SG500 - DHCP server does not assign predefined static IP addresses to hosts

hi guys
I upgraded my SG500 switch firmware to 1.3.0.59, since there is a new functionality DHCP server v.4
well I must say I came accross the issue I cannot solve. DHCP server assign dynamic address - no hassles.
troubles start with static IP hosts.
I defined a couple of hosts with static address within the correct subnet. I tried with hardware address and client identifiers. no luck. my switch does not assign the IP address I assigned to the suitable mac address. to define it I use both CLI & Web.
no of them works. any idea ?
below the cut from my config:
ip dhcp pool host HP-Ellite
address 10.10.11.7 255.255.255.0 client-identifier 01:d8:d3:85:cf:09:72
client-name HP-Ellite
default-router 10.10.11.1
exit
ip dhcp pool host VAIO-Z
address 10.10.14.108 255.255.255.0 hardware-address 54:53:ed:1c:a1:46
default-router 10.10.14.1
exit

Tom, thnkas for a quick reply...
look, usually it is pretty easy to manage an issue with so precise instructions. but this particular time it is not.
as I understood the "dhcp option 61" is nothing more than "00" which go before pure hardware address.
so, coming back to my example from the first post
with this configuration, my switch assigns 169.254.110.130 255.255.0.0 address
ip dhcp pool host HP-Ellite
address 10.10.11.112 255.255.255.0 client-identifier 01:d8:d3:85:cf:09:72
client-name HP-Ellite
default-router 10.10.11.1
exit
with that configuration, my switch assigns 10.10.11.11 255.255.255.0 address
ip dhcp pool host HP-Ellite
address 10.10.11.112 255.255.255.0 client-identifier 00:d8:d3:85:cf:09:72
client-name HP-Ellite
default-router 10.10.11.1
exit
otherwords "00" does not work as explained (unless I misunderstood the meaing of dhcp option 61). my switch assigns first available dynamic IP address. atlhough the arp table is cleared, dynamic address table is cleared as well. swtich is rebooted, host is rebooted
once I change hardware address prefix to "01", my host asign itself 169.xxx.xxx.xxx adress.

Light weight AP cannot Get IP from windows DHCP server

Hi all :
We user WISM ver.5.0.148.2 , All AP is 1230 Series and Use Windows 2003 DHCP server.All AP cannot get IP after upgraded Lightweight from Autonomous IOS.
But I found the DHCP is work if i use my notebook connect the same switch port and my notebook can get IP from DHCP server.
Anyone can tell me why MY Lightweight AP cannot get IP from DHCP server ???
thx any idea .
I confirm the AP DHCP setting enabled and the config as below :
AP000d.bc41.4392#show ip inter bri
Interface IP-Address OK? Method Status Protocol
FastEthernet0 unassigned YES DHCP up up

hi fella5:
yes , it's done , the WLC already have the SSC Code and i verify the SCC code is correctly.
the Switchport configured that vlan 99 access port and the Global Vlan ID set the IP helper to the DHCP already.I can ping to the DHCP , DNS and WLC.

%SW_DAI-4-DHCP_SNOOPING_DENY after dhcp server migration

Hello,
Some weeks ago, we migrated our DHCP server (from windows 2003 to windows 2012 with the new failover features in active/passive mode).
On our switches ; we have both arp inspection & dhcp snooping enabled. Since the migration, arp inspection is not working correctly : as soon as i activate the arp inspection on our client vlan (96) ; we get errors like : "Sep 1 11:50:39: %SW_DAI-4-DHCP_SNOOPING_DENY: 1 Invalid ARPs (Req) on Fa0/29, vlan 96.([d4c9.efdf.710e/10.0.96.89/0000.0c07.ac60/10.0.127.254/11:50:39 GMT+1 Mon Sep 1 2014])
Sep 1 11:50:40: %SW_DAI-4-DHCP_SNOOPING_DENY: 2 Invalid ARPs (Req) on Fa0/7, vlan 96.([d485.64b4.0068/10.0.97.214/0000.0000.0000/10.0.127.254/11:50:40 GMT+1 Mon Sep 1 2014])
If i have a look on the dhcp snooping binding table on the same switch :
NUKUH052#sh ip dhcp snooping binding
MacAddress IpAddress Lease(sec) Type VLAN Interface
18:A9:05:F5:28:2B 10.0.97.101 418236 dhcp-snooping 96 FastEthernet0/40
6C:3B:E5:0D:B3:B2 10.0.96.184 2936 dhcp-snooping 96 FastEthernet0/36
10:60:4B:7C:A3:14 10.0.97.17 678739 dhcp-snooping 96 FastEthernet0/42
00:1F:29:02:AA:6B 10.0.98.53 678938 dhcp-snooping 96 FastEthernet0/37
88:51:FB:80:1B:E1 10.0.97.252 680212 dhcp-snooping 96 FastEthernet0/3
64:31:50:A3:F8:52 10.0.96.96 341484 dhcp-snooping 96 FastEthernet0/20
64:31:50:A3:D7:5A 10.0.97.209 677205 dhcp-snooping 96 FastEthernet0/6
6C:3B:E5:1A:8D:05 10.0.96.255 677165 dhcp-snooping 96 FastEthernet0/8
00:1F:29:02:AA:EF 10.0.96.207 678365 dhcp-snooping 96 FastEthernet0/1
00:23:7D:2F:72:E7 10.0.98.152 680376 dhcp-snooping 96 FastEthernet0/16
Total number of bindings: 10
Strange, interface FastEthernet0/7 is not in the table !!! and that s the same case for a lot of computers. (of course it s dhcp and not static ip address).
Extract of the switch configuration :
Standard port configuration
interface FastEthernet0/7
switchport access vlan 96
switchport mode access
switchport nonegotiate
switchport voice vlan 192
switchport port-security maximum 3
switchport port-security
switchport port-security aging time 1
switchport port-security violation restrict
ip arp inspection limit rate 256 burst interval 10
no logging event link-status
mls qos trust dscp
no snmp trap link-status
storm-control broadcast level bps 1m
storm-control multicast level bps 1m
storm-control action shutdown
spanning-tree portfast
spanning-tree bpduguard enable
General switch settings
ip dhcp snooping vlan 96
ip dhcp snooping information option allow-untrusted
no ip dhcp snooping information option
ip dhcp snooping
>> ip arp inspection vlan 96 : as soon as i had this command i have the error messages.
I already :
* tested several software version
* only enabled a single dhcp server in the helper address
But i don't find the issue... the problem came when we started up the 2 new dhcp server (with the new 2012 dhcp failover feature). We have the same issue on all the switches of this LAN (the same config is running fine on the other factory we own).
Can you help me to solve that issue ?

Hi,
I just attached the file containing the filtered caps ; taken simultaneously on both dhcp servers. As we are using HSRP ; it looks like the dhcp messages are not doubled, but quadruplet.
Below the HSRP configuration on one of our both core switches :
interface Vlan96
ip address 10.0.127.252 255.255.224.0
ip helper-address 10.0.9.33
ip helper-address 10.0.9.32
no ip redirects
standby 96 ip 10.0.127.254
standby 96 timers 1 4
standby 96 priority 80
standby 96 preempt
arp timeout 720
And i also discovered that there are some microsoft bugs related to dhcp failover. Links here :
http://blogs.technet.com/b/teamdhcp/archive/2014/02/26/dhcp-failover-patch-to-address-a-reservation-issue-and-another-issue-related-to-failover-partner-not-accepting-state-transition-from-bad-address-gt-active-has-been-released.aspx
and
http://support.microsoft.com/kb/2831920
And the active dhcp windows server has not been updated since january 2013.... (so the update are not applied). I ll discuss with my colleague in charge of server to update it asap...

DHCP Client does not send host name to DHCP Server

Hello,
I installed Solaris 10 on VirtualBox and I cannot ping/ssh/telnet the virtual machine by its host name (even from the host computer) but only by it's ip.
I tried everything I could find on internet with no success (I don't want to add the hostname in every hosts file on every computer because it's not really professionnal)
I followed what said here: http://docs.oracle.com/cd/E26505_01/html/E27061/eyhuv.html#scrolltoc
Can someone has an idea of what I can do or why this does not work.
I installed a virtual Windows7 and an Ubuntu, and it worked perfectly.
Any help would be grantly appreciated.
Thank you
Here is my current configuration:
Oracle VM VirtualBox 4.3.8 (I choose "Oracle 10 10/09 and later (64 bit))
Oracle Solaris 10 1/13
Network: bridge with RealTek interface
NB: I don't have access to dhcp server on my netgear router (access is disabled by my ISP)
Files in /etc:
dhcp.e1000g0 (empty)
nodename (contains "thorgal")
nsswitch.conf has following lines:
hosts: files dns # Added by DHCP
ipnodes: files dns # Added by DHCP
networks:   files
protocols: files
rpc:        files
ethers:     files
netmasks:   files
bootparams: files
hostname.e1000g0 (contains "inet thorgal")
/etc/inet/hosts:
::1             localhost
127.0.0.1       localhost loghost
192.168.0.17    thorgal # Added by DHCP
/etc/default/dhcpagent:
REQUEST_HOSTNAME=yes
PARAM_REQUEST_LIST=1,3,6,12,15,28,43
.v6.PARAM_REQUEST_LIST=7,12,23,24,27,29
I also try "ifconfig e1000g0 dhcp release" with no success
the debugging of dhcpagent:
# pkill -x dhcpagent
# /sbin/dhcpagent -d1 -f &
1088
# ifconfig e1000g0 dhcp start
/sbin/dhcpagent: debug: insert_pif: e1000g0: sdumax 1500, hwtype 1, hwlen 6
/sbin/dhcpagent: debug: set_packet_filter: set filter 805869f (DHCP filter)
/sbin/dhcpagent: debug: get_smach_cid: getting default client-id property on e1000g0
/sbin/dhcpagent: debug: in state INIT; allowing start command on e1000g0
/sbin/dhcpagent: debug: ipc_action_start: started start (command 4) on e1000g0
/sbin/dhcpagent: debug: set_smach_state: changing from INIT to INIT_REBOOT on e1000g0
/sbin/dhcpagent: debug: dhcp_selecting: host thorgal
/sbin/dhcpagent: info: configure_v4_lease: setting IP netmask to 255.255.255.0 on e1000g0
/sbin/dhcpagent: info: configure_v4_lease: setting IP address to 192.168.0.17 on e1000g0
/sbin/dhcpagent: warning: configure_v4_lease: no IP broadcast specified for e1000g0, making best guess
/sbin/dhcpagent: info: configure_v4_lease: using broadcast address 192.168.0.255 on e1000g0
/sbin/dhcpagent: info: configure_v4_timers: e1000g0 acquired lease, expires Fri Mar 21 21:33:05 2014
/sbin/dhcpagent: info: configure_v4_timers: e1000g0 begins renewal at Fri Mar 21 09:33:05 2014
/sbin/dhcpagent: info: configure_v4_timers: e1000g0 begins rebinding at Fri Mar 21 18:33:05 2014
/sbin/dhcpagent: debug: set_smach_state: changing from INIT_REBOOT to PRE_BOUND on e1000g0
/sbin/dhcpagent: info: added default router 192.168.0.1 on e1000g0
/sbin/dhcpagent: debug: set_smach_state: changing from PRE_BOUND to BOUND on e1000g0
/sbin/dhcpagent: debug: configure_bound: bound e1000g0
/sbin/dhcpagent: debug: ipc_action_finish: finished start (command 4) on e1000g0: 0

During the Solaris installation process, you told it what the hostname was going to be and that you wanted that environment to exist with a dynamic IP address instead of a specific address that you desired.
When Solaris boots it broadcasts that hostname and waits for a DHCP server to be quasi-intelligent enough to award an IP address based upon a pre-configured list inside that DHCP server.   Hostname ABC would always get IP address 123 on subnet rst, hostname DEF would always get IP address 456 on subnet xyz, and so on and so on.
That's the fundamental process for proper (and thus secure) DHCP.
All your other environments (Windows, Debian, Ubuntu) are what might be thought of as "hacked for convenience" to get around that sort of network configuration. They take the lazy way to exist. That partial networking setup is good enough for a home network but would be miserably insecure in a corporate environment. Those choices are operating environments that are nice for end-user desktops but aren't Enterprise Class.
My suggestion?
Review the IP address range in your Netgear router's setup.
It is likely something like 192.169.0.1 through 192.168.0.50 and can be customized.
You probably don't have 50 devices on your network and probably will never have 50 simultaneous devices on your network.
... just do a reconfigure reboot and set your Solaris to use a static IP of 192.068.0.45
Then reboot and I predict your issue that prompted this forum thread will be gone.
That's how I've done it at home for many years, even when installing Solaris to bare metal (no virtualization).

Making Switch as DHCP server

Similar Messages

Maybe you are looking for