Cisco :: DHCP Server With 3750 PoE?
Feb 20, 2013I'm trying to enable dhcp server on it. done this how to [URL] It works, but unfortunately the client takes almost 2 min to get an ip.
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Cisco :: 3750 - DHCP Server Configuration
Aug 16, 2011I have a WCS that I use to manage 8 controllers (2 WiSM's totaling 4 controllers, and 4 more controllers at remote locations). All controllers connect to 3750 switches. The layer three interfaces for all V LAN's that are related to the wireless network are created on these switches. Each layer three interface has a helper address that points the devices in the sub net to the correct DHCP server.
When a wireless device requests a DHCP request I believe it gets to that server based on the relay from the layer three interface on the 3750. However, I know that the virtual interface on the controller is also requesting an address because my firewall is flooded with deny statements. The virtual interface is configured for 1.1.1.1 and so it gets blocked. I am starting to question the use of this interface considering the fact that it is getting blocked and the clients are still getting address.
Are both interfaces trying to act as DHCP relays? Could I setup the controllers to be the only relay (without using the virtual interface)?
Cisco WAN :: Can Configure DHCP Server In 3750
Dec 13, 2010Can we Configure DHCP server in 3750 ? we have configure DHCP server in 1841 router but some reason we want remove router .
View 2 Replies View RelatedCisco LAN :: 3750 How To Filter DHCP Packets From / To Server
Dec 27, 2011a power analyzer in my network is sending some packets that are unexpected and incorrectly recognized as DHCPOFFERS. As a workaround, I would like to filter those packets with my Cisco switch 3750.Suppose IP_POWER_ANALYZER is the ip address, what could be the best choice
1. deny udp any IP_POWER_ANALYZER eq bootpc
2. deny udp any IP_POWER_ANALYZER eq bootpc; deny udp IP_POWER_ANALYZER any eq bootps
3. deny udp any eq bootpc IP_POWER_ANALYZER eq bootps
Cisco Switching/Routing :: DHCP Server Catalyst 3750
May 28, 2013I have customer who has as Core Switch one Cisco Catalyst 3750 with the IOS c3750-ipbase-mz.122-35.SE5.I know that this image support DHCP Server configuration, but I like to implementate new vlans (approx 15) and I want to know if this switch support 15 DHCP Servers.
View 3 Replies View RelatedCisco Wireless :: 3750 Switch - DHCP Server / Cannot Get IP Address
Jan 8, 2012I have a 1250 AP connected to an Switch Cisco 3750. We have a SSID(v lan 1 - native) which get an IP Address from our DHCP Server(located in a Windows 2003 server). I added a new SSID in VLAN 2 and I would like no to use the DHCP Server but to make the AP get an IP Address from the pool I created in the own AP (ip dhcp pool Guest) but every time I try to connect the new v lan, it doesn't get an ip address.
Follow the settings of the AP.
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
[Code]...
Cisco Switching/Routing :: 3750 - DHCP Server Doesn't Provide IP Address
Dec 11, 2012a new LAN installation, two VSS pair 6509 core, 15 closets, with 3750 stacks. Floor 15 only, devices/hosts can ping teh DHCP server but cannot aquire IP addresses. no such problem on other floors?
portfast an dother parameters are intact.
3750 - Craft Helper Addresses So DHCP Requests Go To Proper Server
Dec 15, 2012Setting up a stand-alone WDS/PXE server.Current we have helper addresses setup to forward the DHCP requests from the different VLAN's to the DHCP server. The WDS/PXE server we are setting up is on its server. How do we craft the helper addresses so DHCP requests go to the proper server hosting DHCP and PXE requests go the WDS server?
Everything I seen on Microsoft Technet, lists using Helper Address as the recommended way, but assume both services are on the same server. Our helper address is as follows on each VLAN interface in router: ip helper-address X.X.X..This is a Cisco 3750.
Cisco Switching/Routing :: 3750 DHCP Server Handing Out IP Addresses To Client Connected To VLAN5 Interface
Feb 23, 2012Haveing issue with DHCP server handing out IP addresses to client connected to VLAN5 interface.ISP Router>Firewall -(WatchGuard Drop-in mode) I have several 3750 switches and one acting as a L3 switch. The L3 is configured as follow: [code]
If I connect a laptop to int fa1/0/10 I DO NOT get an IP address from the 10.100.0.8 scope. If I connect to another interface within the VLAN 1, I get an address from the 10.100.0.0 range.
Windows 2003 Server - Dhcp Server Cannot Ping Client
Sep 29, 2011i am facing the same problem now but am using windows 2003 server
View 1 Replies View RelatedServer 2008 - Share Internet Through DHCP Server
May 6, 2012[code]...
I am able to obtain IP addresses through the DHCP server for my clients and I am able to browse internet on the server 2k8.Server 2008 - Share Internet through DHCP server
Cisco WAN :: WLC2504 Not Accepting DHCP Pools From 3750?
Dec 4, 2011I got a set of dhcp pool in one 3750 attached to diferent Vlans in the network, the wired network works fine, you can get from any switch port across the LAN a diferente VLANs IP. In my wlc2504 I got 5 WLANs with the DHCP server pointed to the VLAN in the 3750, but I just got one set of ip when i tried to connect to diferent WLAN, without connectivity, I can see all the Ap's, and ping the VLANs in the 3750,
View 4 Replies View RelatedCisco Switching/Routing :: SW 3750 - ACLs For DHCP
Apr 16, 2013We are configuring ACLs for a dhcp pool on Sw3750
ip access-list extended Test
permit ip any 192.168.1.0 0.0.0.31
permit ip any host 172.16.1.1
And, here is dhcp pool:
ip dhcp excluded 192.168.1.1 192.168.1.3
ip dhcp pool Name
network 192.168.1.0 255.255.255.0
default-router 192.168.1.1
But when a PC try to obtain IP automatically, it doesn't work.
Cisco Switching/Routing :: 3750 - DHCP Release
May 13, 2012i created the 10 V LAN in my Cisco 3750 switch.All other V LAN DHCP IP's (192.168.2.X - 192.168.10.X) will be release from the DHCP server except VLAN1 . In my 3750 switch i created DHCP pool(192.168.14.X).... and i assigned to VLAN10.... but one of the client is assigned to V LAN 2(192.168.2.X) configuration. but its getting IP from the Cisco DHCP instead of DHCP server.
View 2 Replies View RelatedCisco Switching/Routing :: DHCP Limitation On 3750 Switches?
Jul 16, 2012I want to clear following things regarding Cisco 3750 switch.
1. Can I configure Multiple DHCP pool on C3750?
2. Performance effect due to same?
3. Can I resrve IP addrese from DHCP pool for specific MAC address.
4. Can I Exempt IP address from DHCP pool ?
Cisco WAN :: 3750 Switch - Clear IP DHCP Conflict / Binding
May 10, 2013I configured an DHCP server on cisco 3750 switch . Wher in w3750 gets connected to plain l2 switch 2960 on floor and machine gets connected to 2960 port. [code] Below is the description of problem:
-> The Cisco 3750 switch is the DHCP server. VLAN 108 is named as internet vlan.
-> Ports in Cisco 2960 switch has been configured with "switchport access vlan 108".
-> There were no problems at all and everything had been working smoothly.
-> 3 days back, users started complaining that they couldn't access the internet. Up on troubleshooting the issue, I found out that there was an issue with the DHCP server as the computer couldn't get any IP address at all. After setting static IP address, the internet started working again.
If I bind IP to MAc address reservation on core 3750 switch for some time of moment it works but after that machine gets unreachable .I restarted the 3750 switch and also all the 2960 switches over the weekend, however, the issue still hasn't been resolved yet. I did issue the command "clear ip dhcp conflict *", clear ip dhcp binding * but no joy at all.
Cisco Wireless :: WLC Integrated 3750 Upgrade DHCP Failure
Jul 20, 2011I've been working with a client's integrated 3750 WLC running 4.0.179.11. I want to upgrade the code because it is old plus I am having DHCP trouble. I have a couple of questions:
1. Is it OK to upgrade to SWLC3750K9-5-2-193-0.aes ? or do I need to go through 4.2 first ?
2. Will that code upgrade the bootloader at the same time?
3. How can I make sure there is enough flash space on the WLC?
4. Are there any special considerations to plan/prepare for?
The DHCP issue is failure of associated clients to get an IP address with this message found in WLC debugging:
[Code]...
Cisco Switching/Routing :: 3750 Not Handing Out DHCP Addresses
Nov 2, 2011Had a problem with a 3750 this morning not handing out DHCP addresses. The following is a sanitized config of what the switch is using. [code] The IOS installed on the switch is c3750-ipbasek9-mz.122-55.SE1.bin. What got my attention was that the sh ip dhcp pool PC showed 180 addresses being excluded. In doing the math from the dhcp excluded addresses, only 64 should be excluded.
My next step was to remove the second dhcp excluded-address line above. Doing a clear ip dhcp binding * started letting the DHCP service hand out addresses but the sh ip dhcp pool PC stil showed 180 addresses excluded.
It finally took removing the dhcp pool and putting it back in to drop the number of excluded addresses down to a value that matches the first excluded-address line. Didnt see a dhcp bug in the bug database that would explain this.
I tried re-entering the second excluded-address line from above and saw the number of excluded addresses rise as expected. When I negated the line, the number of excluded addresses dropped back to its previous value.
Cisco Switching/Routing :: Adding A New DHCP Scope To 3750 Stack
Apr 2, 2012The company I work for owns a remote manufacturing facility that houses a stack of five 3750 switches that function as the core switching system for the plant. DHCP services are configured on the 3750 stack.
There are currently three VLANs configured, one for data and one for voice (144 and 244 respectively) and one for UCM servers (200), with corresponding subnets of 10.44.32.0 /19, 10.44.0.0 /19 and 10.44.100.0 /24.
The current DHCP scope configurations are as follows:
ip dhcp pool Plant-44_DHCP
network 10.44.32.0 255.255.224.0
default-router 10.44.33.254
[Code].....
My question is will the addition of this scope in the manner presented cause any problems with PCs or IP phones outside the targeted recepents receiving the wrong IP information from this scope?
I plan to identify the users that should be members of this VLAN 444 and change the switchport mode access configuration on the corresponding switch ports from VLAN 144 to VLAN 444. The voice VLAN 244 will remain the same.
Cisco Switching/Routing :: 3750 - How To Block Unauthorized DHCP SOHO Router
Jan 20, 2012If it's possible, how do you protect/block a unauthorized DHCP SOHO router with NAT form a Cisco 3750?
View 16 Replies View RelatedCisco Switching/Routing :: 3750 - Multiple Subnets In Single DHCP Pool On Device
Mar 25, 20123750 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?
Cisco - How To Set Up DHCP Server
Jan 17, 2013setting up a DHCP server on a Cisco Layer 3 Switch. How would I set the pool up to issue the lowest available IP address all the time. At the moment it counts up even if a lease has expired.
View 12 Replies View RelatedHow To Set Up A DHCP Server
Jul 9, 2012anyways here is my concern, we have a DHCP server in our company (HOTEL) and the Computer wont turn on, the computer is Compact Proliant Intel Inside Pentium Pro Processor OS Windows Server 2003, this Computer is so old. they been using this for 12 yrs and they didn't upgrade... now its dead.
since this Computer wont turn on, all of the computers cannot access in the internet, so for the meantime this is what I did... from the modem to router, I configure the router as a STATIC IP and I enter the IP address provided by our Internet Service Provider after that all of the computers form the hotel have internet connection.
now I'm planning to build a new PC and set up a DHCP server but I don't know how and where to start
Cisco WAN :: 881 Can't To Obtain Ip From ISP Dhcp-server
Sep 14, 2011I cant to obtain DHCP-address on WAN interface. All over hardware can (windows-based systems and Asus RT-N10), but not Cisco 881 Also i cant to obtain ip even from Asus RT-N10 with this configuration:! version 15.1 service config no service pad service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname Router ! boot-start-marker boot-end-marker ! ! ! no aaa new-model memory-size iomem 10 ip source-route ! ! ip cef no ipv6 cef ! ! crypto pki token default removal timeout 0 ! ! license udi pid CISCO881-K9 sn FCZ1523C3RR ! ! username admin privilege 15 secret 5 $1$0H8v$xx/HtPJIllcFvEWFjzI5t/ ! ! ! ! ! ! interface FastEthernet0 ! interface FastEthernet1 ! interface FastEthernet2 ! interface FastEthernet3 ! interface FastEthernet4 ip address dhcp ip broadcast-address 0.0.0.0 duplex auto speed auto ! interface Vlan1 ip address 192.168.4.1 255.255.255.0 ip broadcast-address 0.0.0.0 ! ip forward-protocol nd no ip http server no ip http secure-server ! ! logging esm config ! ! ! ! ! control-plane ! ! line con 0 exec-timeout 0 0 logging synchronous login local no modem enable line aux 0 line vty 0 4 exec-timeout 0 0 logging synchronous login local transport input all ! end After thousands experiments next configuration started to obtain ip from Asus RT-N10 , but not from ISP ! ! Last configuration change at 12:22:25 UTC Tue Sep 13 2011 by admin ! version 15.1 no service pad service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname Router ! boot-start-marker boot system flash c880data-universalk9-mz.151-3.T.bin boot-end-marker ! ! ! no aaa new-model memory-size iomem 10 ip source-route ! ! ! ip dhcp relay information trust-all ip dhcp compatibility suboption link-selection standard ! ! ip cef no ip dhcp-client broadcast-flag no ipv6 cef ! ! crypto pki token default removal timeout 0 ! ! license udi pid CISCO881-K9 sn FCZ1523C3RR ! ! username admin privilege 15 secret 5 $1$3bFL$y/cxqQLd.8cixPrtETEJ4. ! ! ! ! ! ! interface FastEthernet0 ! interface FastEthernet1 ! interface FastEthernet2 ! interface FastEthernet3 ! interface FastEthernet4 ip dhcp relay information trusted ip dhcp relay information check-reply none no ip dhcp client request tftp-server-address no ip dhcp client request netbios-nameserver no ip dhcp client request vendor-specific no ip dhcp client request static-route ip address dhcp ip broadcast-address 0.0.0.0 duplex auto speed auto ! interface Vlan1 no ip address ip broadcast-address 0.0.0.0 ! ip forward-protocol nd no ip http server no ip http secure-server ! ! logging esm config ! ! ! ! ! control-plane ! ! line con 0 exec-timeout 0 0 logging synchronous login local no modem enable line aux 0 line vty 0 4 exec-timeout 0 0 logging synchronous login local transport input all ! end ISP's hardware based on Juniper.What else must I switch of/on to start DHCP-client?!
View 5 Replies View RelatedCisco WAN :: DHCP Server On 3560G
May 23, 2011I am facing an issue with setting up dhcp server on a 3750G-24PS-S,IOS : c3560-ipbasek9-mz.122-58.SE.bin,the switch configuration is below,interface Vlan100 description ***Data Segment*** ip address 192.168.102.1 255.255.255.0 no shut!ip dhcp excluded-address 198.168.102.1 198.168.102.10! ,ip dhcp pool datalan network 198.168.102.0 255.255.255.0 default-router 198.168.102.1 dns-server 192.168.40.11,!,interface GigabitEthernet0/1 switchport access vlan 100 switchport mode access spanning-tree portfast.
View 2 Replies View RelatedCan't Connect To DHCP Server
Aug 16, 2012OLD Dell computer running Windows XP Professional. Just ran a clean install and installed new drivers yesterday. After installing Service Pack 2, I began getting limited connectivity errors. Tried ipconfig/release and ipconfig/renew, but received the DHCP error.
View 6 Replies View RelatedCisco :: 3750 Unable To Ping Server
Jun 5, 2012im trying to connect a dell MD3000i to a Cisco 3750-s but i am not abel to ping the server.the status is up and Protocol is up. but still nothing.i configerd the port to be a acces port and also at trunk port but still nothing is happening.
View 1 Replies View RelatedCisco :: DHCP Server With Multiple VLANs?
Jan 26, 2013How to configure DHCP server if i have 2 vlans. I know how to configure rest of the network, just i don't know server.I use packet tracer and i attached file with my network. PC1 is on VLAN1 and PC2 is on VLAN2.I want ip addresses in vlan1 to be from 192.168.1.2 and in vlan2 from 192.168.2.2. I would like to do it just like in the designed network, without router.
View 5 Replies View RelatedCisco :: Two Asa Firewall Between Dhcp Client And Server?
Oct 19, 2012Can I have two asa firewall between dhcp client and dhcp server. if yes what solution i have to have to get dhcp leases. should i have to configure dhcp relay on both the asa.
View 5 Replies View RelatedCisco Switches :: SF 300 Works As DHCP Server?
Dec 26, 2012know any plan from Cisco to make 300 series switch to work as a DHCP server?
View 1 Replies View RelatedCisco Wireless :: 2504 - AP Not Getting IP For DHCP Server
May 21, 2013I have a 2504 WLC and 1042 ap's. Everything worked great in my test enviroment (of course). Now when I want to deploy the wireless, the ap's are not getting and ip for the windows dhcp server.
I have option 43 configured in dhcp, sub option 241>ip address of the controller
I have my A record in dns, cisco-capwap-controller.
*Mar 1 00:03:17.050: %CAPWAP-3-ERRORLOG: Not sending discovery request AP does not have an Ip !!
Not in Bound state.
*Mar 1 00:03:27.050: %CAPWAP-3-ERRORLOG: Not sending discovery request AP does not have an Ip !!
*Mar 1 00:03:27.054: %CAPWAP-3-DHCP_RENEW: Could not discover WLC using DHCP IP. Renewing DHCP IP.
*Mar 1 00:03:37.054: %CAPWAP-3-ERRORLOG: Not sending discovery request AP does not have an Ip !!
*Mar 1 00:03:47.054: %CAPWAP-3-ERRORLOG: Not sending discovery request AP does not have an Ip !!
*Mar 1 00:03:57.054: %CAPWAP-3-ERRORLOG: Not sending discovery request AP does not have an Ip !!
*Mar 1 00:04:07.054: %CAPWAP-3-ERRORLOG: Not sending discovery request AP does not have an Ip !!
Not in Bound state.
Cisco WAN :: PPPoE Server With DHCP 1811
Oct 18, 2007I am working to test the PPPoE solution. The requirement is that she like to have a PPPoE server (7200), enable the DHCP pool on the router. The PPPoE client (1811) should receive the IP address through the DHCP and with subnet mask (/24) so that routing protocol can enable between the PPPoE server and client.We test with some initial configuration but not success to obtain DHCP address from the pool.
On PPPoE server router,
!
ip dhcp pool DHCP-PPP
network 192.168.254.0 255.255.255.0
default-router 192.168.254.254
[Code]...
Servers :: 2 Dhcp Server On The Same Lan Segment?
Apr 14, 20112 dhcp server on the same lan segment not thesame ip add series , how can i prevent to lease ip from another ip series
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