Cisco 6921 - BE3000 - new DHCP server

Similar Questions

• New DHCP server not to issue the IPS (2012 R2)

  Having a new DHCP server is going. Authorized and not coming error. Turn off the old DHCP server and try to renew the lease of the IP, and nothing happens. What is the problem?

  I forgot to change the IP addresses of switches support. :( Everything works. :)

• If a PC with a DHCP server is connected via VPN, with her serve IP addresses on the tunnel?

  Situation: we have a few portable computers test Ubuntu running DHCP servers.  We need get the updates and other changes in corporate network sometimes.  Today, we turn off the DHCP server, set up to get an IP via DHCP (besides) and make our updates.

  Problem: we do not want someone accidentally connect the laptop to the corporate network, while its DHCP server is running.

  Question: so, if we go via wifi using a Cisco VPN client, the DHCP server IP addresses above the tunnel?

  Thanks for reading.

  N ° DHCP uses layer 2 broadcasts to disseminate IP addresses.  Because your clients are connected via VPN, there is no contiguity of layer 2.  The only way he would accidentally do it is if you have configured an address to support IP dhcp as one of your VPN clients on the network, which I imagine you wouldn't.

• Cisco Aironet 2600 series Configuration of the DHCP server is NOT serving addresses?

  Cisco Aironet 2600 series Configuration of the DHCP server is NOT serving addresses?

  I have (2) AIR-SAP2602I-A-K9, configured the same way.

  on two different remote LANs.

  They don't seem to be handing out addresses via DHCP.

  {If I connect to a local network with another DHCP server}

  wireless devices can obtain addresses

  This another DHCP server on the LAN through the access point.}

  I followed 12.4.25d. JA.cg.pdf

  Configuration of the Access Point to provide the Service DHCP 5-22

  ---------|---------|---------|

  e.g. 3444-RCS1-AN #show running-config

  Building configuration...

  version 15.2

  3444-RCS1-YEAR host name

  no ip Routing

  USH - DM IP domain name

  DHCP excluded-address IP 192.168.29.89

  IP dhcp RCS1 pool

  network 192.168.29.88 255.255.255.248

  router by default - 192.168.28.1

  Rental 1 0

  interface BVI1

  IP 192.168.28.211 255.255.254.0

  no ip route cache

  default IP gateway - 192.168.28.1

  ---------|---------|---------|

  ---------|---------|---------|

  e.g. 3444-RCS2-AN #show running-config

  Building configuration...

  version 15.2

  3444-RCS2-YEAR host name

  no ip Routing

  USH - DM IP domain name

  DHCP excluded-address IP 192.168.129.81

  IP dhcp RCS2 pool

  network 192.168.129.80 255.255.255.248

  router by default - 192.168.128.1

  Rental 2 0

  interface BVI1

  IP 192.168.128.171 255.255.254.0

  no ip route cache

  default IP gateway - 192.168.128.1

  ---------|---------|---------|

  Thats the DHCP Pool range 192.168.29.88 through 192.168.28.95

  Well this will confuse your customers.

  And this is NOT how to set up your "range".   See below:

  DHCP excluded-address IP 192.168.29.1 192.168.29.87

  DHCP excluded-address IP 192.168.29.96 192.168.29.254

  IP dhcp RCS1 pool

  network 192.168.28.211 255.255.254.0

  router by default - 192.168.28.1

  Rental 1 0

• Start the server wds with cisco dhcp server

  Salvation;

  I want to use the cisco dhcp server and I do not know which option I need to put my dhcp server

  Tanx

  You must contact Cisco support to help them with their product.

• Using Cisco AP as router and DHCP server

  I'm a newbie in the technology of Cisco wireless. I have a lot of Cisco wireless access point. One of them (1142AG-K9 Cisco) I want to set them up as a DHCP server and will forward traffic to the public ip address as it will route the traffic to 203.82.203.50 (Ip provided by ISP) and will lease ip as associated devices 192.168.10.0 pool.

  Even though I know that it is possible using a router on the AP. But it is possible using a single access point?

  If so, how?

  Help, please.

  Hi, the AP cisco are just basic layer 2 devices such as a hub or Layer 2 switch, it does not any layer 3 as a wireless router.

  The Cisco access point supports to have a VLAN or subnet configured or more VLANS or subnets and will pass all traffic to a layer 3 devic so that traffic can be routed to the need.

  The Ap can't stand to have an addrees ip configured on the bvi1 for the management.

  Also the build in the ap dhcp option is very limited and will only know the ip address to wirless clints that connect to it on an ssid linked to its management interface in this case that the bvi1 and all them VLAN othe or subnets shall not use an external dhcp server.

  Sent by Cisco Support technique iPhone App

• Problem with the DHCP server IP address

  Hello

  a new installation of LAN, two VSS pair core 6509, 15 closets, with piles of 3750. Floor 15 only, host devices can ping the DHCP server, but cannot acquire IP addresses. not this problem on other floors?

  PortFast a dother settings are intact.

  your thoughts with be appreciated.

  Massoud

  Are the trunks will switches closets for the vlan, the DHCP server is in?

  Sent by Cisco Support technique iPhone App

• WLC 5508 internal DHCP server issues

  Hello

  I'm hoping to get your comments around the issues of dhcp, I faced with two centrally switched Wireless LAN. I have attempted to explain the installation and the problems below and would be grateful if anyone can suggest a solution for the problems I am facing:

  The configuration is the following:

  -J' have a WLC 5508, which has been configured with 4 SSID, of which 2 are the Central authentication and commissioning.
  -J' have a LWAP connected to the WLC in HREAP mode.
  -WLC is configured as a DHCP server for clients that connect to the SSID "Guest." For the rest, I'm on external dhcp server.
  -Only one scope of comments Interface is configured on the WLC.

  Problems:

  1. as far as I know, to WLC serve internal dhcp server, it is mandatory to have the proxy enabled, but the Clients connecting to 'Internet' SSID are

  Unable to get an external dhcp server ip address, if the proxy dhcp is enabled on the WLC. If I disable the proxy, everything works fine.

  2 DHCP does not release the ip addresses assigned to clients, even after that that they are connected.

  3. If a machine that has previously been connected to "Guest" SSID connects to the 'Internet' SSID, he asks the same ip address, he was charged by the WLC assigned under "Guest", it gets the tag with the Vlan configured on the management interface.

  The controller output *.

  (Cisco Controller) > show sysinfo

  Name of the manufacturer... Cisco Systems Inc..
  Product name... Cisco controller
  Version of the product... 7.0.116.0
  Bootloader Version... 1.0.1
  Retrieving Image Version field... 6.0.182.0
  Firmware version... Console USB 1.3, 1.6 Env FPGA, 1.27
  Build Type....................................... DATA + WPS, LDPE

  (Cisco Controller) > show interface summary

  Name interface Vlan Id IP port address Type Ap Mgr. Gu

  EST
  -------------------------------- ---- -------- --------------- ------- ------ --
  1 301 10.255.255.30 dynamic guest no no
  Management 1 100 172.17.1.30 static yes no

  service-port s/o s/o 192.168.0.1 static no no
  n/a n/a 10.0.0.1 no nonstatic virtual

  (Cisco Controller) > show wlan summary

  Number of wireless LANs... 4

  Profile WIFI WLAN ID name / name of the SSID status Interface
  -------  -------------------------------------  --------  --------------------
  1 active LAN management
  2 active Internet management
  3 active active management management
  4 comments comments enabled

  (Cisco Controller) > show dhcp detailed comments

  Scope: comments

  Enabled.......................................... Yes
  Lease Time....................................... 86400 (1 day)
  Pool Start....................................... 10.255.255.31
  Pool End......................................... 10.255.255.254
  Network.......................................... 10.255.255.0
  Netmask.......................................... 255.255.255.0
  Default routers... 10.255.255.1 0.0.0.0 0.0.0.0
  DNS Domain.......................................
  DNS.............................................. 8.8.8.8 8.8.4.4 0.0.0.0
  NetBIOS name servers... 0.0.0.0 0.0.0.0 0.0.0.0

  (Cisco Controller) > show detailed interface management

  ... Management interface
  MAC address... e8:b7:48:9 b: 84:20
  IP Address....................................... 172.17.1.30
  IP Netmask....................................... 255.255.255.0
  IP Gateway....................................... 172.17.1.1
  State IP NAT outside... People with disabilities
  External IP NAT... 0.0.0.0
  VLAN............................................. 100
  Quarantine-vlan... 0
  Active physical Port... 1
  The primary physical Port... 1
  Port of physical backup... Not configured
  Primary DHCP server... 172.30.50.1
  Secondary DHCP server... Not configured
  Option DHCP 82... People with disabilities
  ACL.............................................. Not configured
  AP Manager....................................... Yes
  Comments interface... NO.
  L2 multicast... Activated

  (Cisco Controller) > show detailed comments from interface

  Interface name... Comments
  MAC address... e8:b7:48:9 b: 84:24
  IP Address....................................... 10.255.255.30
  IP Netmask....................................... 255.255.255.0
  IP Gateway....................................... 10.255.255.1
  State IP NAT outside... People with disabilities
  External IP NAT... 0.0.0.0
  VLAN............................................. 301
  Quarantine-vlan... 0
  Active physical Port... 1
  The primary physical Port... 1
  Port of physical backup... Not configured
  Primary DHCP server... Not configured
  Secondary DHCP server... Not configured
  Option DHCP 82... People with disabilities
  ACL.............................................. Not configured
  AP Manager....................................... NO.
  Comments interface... NO.
  L2 multicast... Activated

  (Cisco Controller) > show dhcp leases

  IP MAC remaining rental period
  00:21: 6a: 9 c: 03:04 10.255.255.46 23 hours, 52 minutes, 42 seconds< lease="" remains="" even="" when="" the="" client="" is="">

  Example of customer connected to the Vlan right with an ip address from the incorrect interface. *************

  (Cisco Controller) > show customer detail 00:21: 6a: 9 c: 03:04
  MAC address of the client... 00:21: 6a: 9 c: 03:04
  User name of the client... N/A
  AP MAC address... a0:cf:5 b: 00:49:c0
  AP Name.......................................... mel
  Status of the client... Associates
  Customer of the NAC OOB State... Access
  Wireless LAN Id... 2<   'internet'="">
  BSSID... a0:cf:5 b: 00:49: this
  Connected to... dry 319
  Channel.......................................... 36
  IP Address....................................... 10.255.255.46< ip="" address="" assigned="" from="" the="" 'guest'="" interface="" or="" dhcp="" scope="" on="" the="">
  Association ID... 1
  Authentication algorithm... Open System
  Reason code... 1
  Status code... 0
  Session timeout... 1800
  Client CCX version... 4
  Version of E2E customer... 1
  QoS Level........................................ Silver
  Beacon priority P 802,1... disabled
  Support WMM... Activated
  Power Save....................................... OFF
  State of mobility... Local
  County of movement mobility... 0
  Complete security policy... Yes
  State Policy Manager... RUN
  Policy Manager rule created... Yes
  ACL name... no
  Status to apply ACL... Not available
  Type of strategy... N/A
  Encryption Cipher... None
  Protection management framework... NO.
  EAP Type......................................... Unknown
  Data HARVEST-H switching... Central
  H - HARVEST authentication... Central
  Management of the interface...
  VLAN............................................. 100< right="">
  Quarantine VLAN... 0
  Access VIRTUAL LAN... 100

  Well it's good news. At least you have to operate.

  Thank you

  Scott Fella

  Sent from my iPhone

• AP (1140) is configured as a DHCP server, but the user does not get an IP address

  Hello

  I just a PA 1140 as standalone AP for the purpose of the investigation on site wireless AP is not attached to any network equipment.

  I can't get an IP address after I have configured the AP as a DHCP server.

  SW AP version is: c1140-k9w7 - mx.124 - 25d.JA1

  Below the output of the show conf:

  AP #sho conf

  With the help of 1455 on 32768 bytes

  !

  version 12.4

  no service button

  horodateurs service debug datetime msec

  Log service timestamps datetime msec

  no password encryption service

  !

  host ap name

  !

  Pulse 9 logging console

  !

  No aaa new-model

  No dhcp use connected vrf ip

  DHCP excluded-address IP 172.16.1.1

  !

  IP dhcp DHCP pool

  network 172.16.1.0 255.255.255.0

  default router 172.16.1.1

  !

  !

  dot11 syslog

  !

  dot11 ssid BTC WiFi SS Kit

  open authentication

  Comments-mode

  !

  !

  !

  !

  !

  Bridge IRB

  !

  !

  interface Dot11Radio0

  no ip address

  no ip route cache

  !

  SSID WiFi SS Kit BTC

  !

  antenna gain 128

  root of station-role

  Bridge-Group 1

  Bridge-group subscriber-loop-control 1

  Bridge-Group 1 block-unknown-source

  No source of bridge-Group 1-learning

  unicast bridge-Group 1-floods

  Bridge-Group 1 covering-disabled people

  !

  interface Dot11Radio1

  no ip address

  no ip route cache

  Shutdown

  gain of antenna 0

  no block of dfs

  channel SFR

  root of station-role

  Bridge-Group 1

  Bridge-group subscriber-loop-control 1

  Bridge-Group 1 block-unknown-source

  No source of bridge-Group 1-learning

  unicast bridge-Group 1-floods

  Bridge-Group 1 covering-disabled people

  !

  interface GigabitEthernet0

  no ip address

  no ip route cache

  automatic duplex

  automatic speed

  No keepalive

  !

  interface BVI1

  IP 172.16.1.1 255.255.255.0

  no ip route cache

  !

  IP http server

  no ip http secure server

  IP http help-path http://www.cisco.com/warp/public/779/smbiz/prodconfig/help/eag

  !

  !

  !

  Line con 0

  line vty 0 4

  opening of session

  !

  end

  AP #.

  Hello

  are you have shown a complete result of the 'see the conf?

  I don't see a single relevant command which is to enable a BVI to accept and route routable packets received from its corresponding bridge group:

  1 channel ip bridge

  I hope this will solve your problem:

  conf t

  1 channel ip bridge

  output

  WRI

• DHCP server is not through DHCP leases

  I can't seem to understand why DHCP server is failed to client DHCP lease?

  Also, I can't understand why the interface NVI0 is? I installed another box the same and NVI0 is down on it and the DHCP server works fine on that too. Strange!

  I'm working on the router VPN CISCO 881... Please, have a look at it and let me know. Thank you

  Here is the configuration in the box...

  SH run
  Building configuration...

  Current configuration: 6543 bytes
  !
  ! Last configuration change to 17:09:54 CST Fri Sep 14/2012 by XXXXX
  !
  version 15.0
  no service button
  horodateurs service debug datetime msec
  Log service timestamps datetime msec
  encryption password service
  !
  XXXXX host name
  !
  boot-start-marker
  boot-end-marker
  !
  logging buffered 51200 warnings
  !
  AAA new-model
  !
  !
  AAA authentication login default local
  AAA authentication login vpn_xauth_ml_1 local
  AAA authentication login local sslvpn
  AAA authorization vpn_group_ml_1 LAN
  !
  !
  !
  !
  !
  AAA - the id of the joint session
  iomem 10 memory size
  clock timezone CSTime-6
  clock to summer time recurring CSE
  !
  Crypto pki trustpoint TP-self-signed-3079619067
  enrollment selfsigned
  name of the object cn = IOS - Self - signed - certificate - 3079619067
  revocation checking no
  rsakeypair TP-self-signed-3079619067
  !
  !
  TP-self-signed-3079619067 crypto pki certificate chain
  certificate self-signed 01
  30820252 308201BB A0030201 02020101 300 D 0609 2A 864886 F70D0101 04050030
  2 060355 04031326 494F532D 53656 C 66 2 AND 536967 6E65642D 43657274 31312F30
  69666963 33303739 36313930 6174652D 3637301E 170 3132 30393134 31393231
  32375A 17 0D 323030 31303130 30303030 305A 3031 06035504 03132649 312F302D
  4F532D53 5369676E 656C662D 43 65727469 66696361 74652 33 30373936 65642D
  31393036 3730819F 300 D 0609 2A 864886 01050003, 818, 0030, 81890281 F70D0101
  81106 C 28 36EC52D0 5435ABC3 8912095F 3641168 F3AEA1E5 D622004B 8100993C HAS
  B67D97AF AEB43CF3 00A00EB5 702FA355 9F58EBEF F42294DC 0E32CF40 E17D372A
  3BC36401 55EDBA5C 910B7A51 89D709A8 7EAB3FF0 E4C99D34 CBE3F316 069C0E16
  BC284055 35E3D762 463DABF6 852C4E7A D2EF45A4 21F08689 4DF17870 9E2A6C27
  010001A 3 7 1BFB0203 HAS 1 130101 FF040530 030101FF 30250603 307830 0F060355
  551D 1104 1E301C82 1A506F70 6 C 696C6C65 617276 2E796F75 72646F6D 61696E2E
  1 230418 30168014 64EA4CAE 702584 6 B5732464 2029E4C2 1F060355 636F6D30
  5C9DA38A 301D 0603 551D0E04 16041464 EA4CAE20 29E4C270 2584C6B5 7324645C
  9DA38A30 0D06092A 864886F7 0D 96E06B83 04DBDA81 05000381 010104 81006 C 27
  EEB0AF35 84ED370E A8C9694E F9B9326D 69CB1043 9C396D7B 760D252F 4881926D
  878E434F 9AFC3E6D A5BF43F2 E619D6EC F45C039A 5FFB478F A99F7EE5 274E37D5
  11976FDE 823FD1A9 700203E5 67A329B3 F4CF45F0 245757 E2349276 C 8 B13414D1
  017616FA 38A40BA8 42545AC5 C7676D21 29E4F491 CADB
  quit smoking
  IP source-route
  !
  !
  DHCP excluded-address IP 10.10.10.1
  DHCP excluded-address IP 192.168.1.1 192.168.100.101
  DHCP excluded-address IP 192.168.1.254
  !
  DHCP IP CCP-pool
  import all
  Network 10.10.10.0 255.255.255.248
  default router 10.10.10.1
  Rental 2 0
  !
  dhcp Internal_Network IP pool
  network 192.168.1.0 255.255.255.0
  192.168.100.254 DNS server
  by default-router 192.168.1.254
  !
  !
  IP cef
  "yourdomain.com" of the IP domain name
  name of the IP-server 192.168.100.254
  No ipv6 cef
  !
  !
  license udi pid CISCO881-K9 sn FTX1604828T
  !
  !
  username privilege 15 secret 5 XXXXX $1$QEcR$96cmvs/h/.05G6BnorcWG/
  user XXXXX name secret $5 1$PQQ1$3.Vin0i/2uZ/KD0xEJ8GC.
  !
  !
  !
  !
  crypto ISAKMP policy 1
  BA 3des
  preshared authentication
  Group 2
  !
  crypto ISAKMP policy 2
  BA 3des
  md5 hash
  preshared authentication
  Group 2
  !
  Configuration group customer crypto isakmp YYYYYYY
  key XXXXX_XXXXX_XXXXX
  VPN-pool
  ACL, VPN-Access-List
  Profile of isakmp crypto vpn-isakmp-profile-1
  match of group identity YYYYYYY
  client authentication list vpn_xauth_ml_1
  ISAKMP authorization list vpn_group_ml_1
  client configuration address respond
  virtual-model 2
  !
  !
  Crypto ipsec transform-set encrypt-method-1 esp-3des esp-sha-hmac
  !
  Crypto ipsec VPN-profile-1 profile
  the transform-set encrypt-method-1 value
  !
  !
  !
  !
  !
  !
  interface FastEthernet0
  !
  interface FastEthernet1
  !
  interface FastEthernet2
  !
  interface FastEthernet3
  !
  interface FastEthernet4
  Description WAN_INTERFACE
  IP 192.168.100.3 255.255.255.0
  no ip redirection
  no ip unreachable
  no ip proxy-arp
  NAT outside IP
  IP virtual-reassembly
  automatic duplex
  automatic speed
  !
  tunnel type of interface virtual-Template2
  IP unnumbered FastEthernet0
  ipv4 ipsec tunnel mode
  Profile of tunnel ipsec VPN-profile-1 protection
  !
  interface Vlan1
  Description VLAN1_INTERFACE
  IP 192.168.1.254 255.255.255.0
  no ip redirection
  no ip unreachable
  IP nat inside
  IP virtual-reassembly
  IP tcp adjust-mss 1452
  !
  local IP VPN-pool 192.168.1.151 pool 192.168.1.200
  IP forward-Protocol ND
  IP http server
  23 class IP http access
  local IP http authentication
  IP http secure server
  IP http timeout policy slowed down 60 life 86400 request 10000
  !
  overload of IP nat inside source list 100 interface FastEthernet4
  IP nat inside source static tcp 192.168.1.100 21 192.168.100.3 21 expandable
  IP nat inside source static tcp 192.168.1.100 80 192.168.100.3 80 extensible

  IP route 0.0.0.0 0.0.0.0 192.168.100.254
  !
  scope of IP-VPN-Access-List access list
  ip permit 192.168.1.0 0.0.0.255 any
  permit tcp host A.B.C.D host 192.168.1.100 eq ftp
  permit tcp host A1. B1. C1. D1 host 192.168.1.100 eq ftp
  permit tcp host A2. B2. C2. D2 host 192.168.1.100 eq ftp
  permit tcp 192.168.1.0 0.0.0.255 host 192.168.1.100 eq ftp
  permit tcp host A3. B3. C3. D3 host 192.168.1.100 eq ftp
  permit tcp any host 192.168.1.100 eq XXX
  !
  access-list 23 allow 10.10.10.0 0.0.0.7
  access-list 23 permit 192.168.1.0 0.0.0.255
  access-list 100 permit ip 192.168.1.0 0.0.0.255 any
  not run cdp

  !
  !
  !
  !
  !
  control plan
  !
  exec banner ^ C
  % Warning of password expiration.
  -----------------------------------------------------------------------

  Professional configuration Cisco (Cisco CP) is installed on this device
  and it provides the default username "cisco" single use. If you have
  already used the username "cisco" to connect to the router and your IOS image
  supports the option "unique" user, that user name is already expired.
  You will not be able to connect to the router with the username when you leave
  This session.

  It is strongly recommended that you create a new user name with a privilege level
  15 using the following command.

  username secret privilege 15 0

  Replace and with the username and password you
  you want to use.

  -----------------------------------------------------------------------
  ^ C
  Banner motd ^ XXXXX - XXXXX router VPN C ^ C
  !
  Line con 0
  exec-timeout 30 0
  Synchronous recording
  no activation of the modem
  line to 0
  line vty 0 4
  access-class 23 in
  privilege level 15
  password 7 124A50424A5E5550
  transport input telnet ssh
  !
  max-task-time 5000 Planner
  end

  How the client is connected to the router? and what is the client? have you tried different customer and this does work?

  You also mention the other router works well, they are exactly the same version of the software running?

  Pls please run debug on the router and see if it is actually to provide the IP address or not.

  Debug ip dhcp server e

• Satellite Pro C650 can't find our DHCP server

  Hello

  We just recived 8 new Satellite Pro C650 and care about their image.
  When connect us to our network via a cable and boot on LAN of the laptop can not find our DHCP server and so of does not obtain an IP address.

  If we connect to an another laptop\workstation in the same Manor, it works very well.

  All the settings are correct in the BIOS.

  Any ideas.

  Hello

  First of all, you should check if the settings of TCP/IP to connect to the local network.
  Network-> properties-> LAN (local area) connections-> TCP/IP-> properties

  Here, you should check if the options for the IP address, DNS are set to obtain automatically.
  In the advanced settings of TCP/IP in IP settings tab active DHCP must be visible.

  In addition, please check if all firewalls do not prevent the laptop to connect to the local network.

• DHCP Server R2 2012 problem

  Hello world.

  I am new to Windows Server. I'm setting up a server to connect thin clients and use it only as an internet point.

  Server roles installed: SC AD, AD DS, AD FS and AD LDS, AD RMS, App Server, DHCP, DNS, file storage Services, Hyper-V, IIS, IPAM, NAP, remote access, Remote Desktop Services. GOING to Services, WDS, Windows Server Essentials experience, WSUS Server Local, all servers.

  My problem is that DHCP does not dynamically IP addresses in the clients. In trying to check the DHCP problem, I used followed enough of ipconfig ipconfig / renew and got the error message "an error has occurred during the renewal of the vEthernet of the virtual interface (my static IP port): unable to contact your DHCP server. I even removed then added the DHCP function and no change.

  What I am doing wrong? Help, please!

  Other tips on this deployment will be welcome, because I'm out of my League here and have no money to wait for him.

  PS. I downloaded and installed SELFSSL for safety certification, as is (without modification).

  Hello

  Post your question in the TechNet Server Forums, as your question kindly is beyond the scope of these Forums.

  http://social.technet.Microsoft.com/forums/WindowsServer/en-us/home?category=WindowsServer

  See you soon.

• Can DHCP server with two scopes - I have reservations in doubles in the two staves?

  Hi all

  Not really a guru of DHCP, so be nice :)

  Currently, we run a DHCP service from one of our domain controllers (win 2008R2). The domain controller is the segment of a network (10.10.120.0/24), the computers making DHCP requests are on a separate network (10.10.103.0/22). We use our ip-helper routers setting to say the devices on the network, how to reach the DHCP server. This has worked well for years.  I should also point out it is company policy for PCs/servers have a static IP, so for the PC, we create reservations for each PC. Servers are assigned static mmanually.

  The question is now we have overflowed into a new building and put in a black 1 GB fiber that connects the two buildings. The network in the new building is using a different network (10.10.104.0/24) address. Implementation of a 2nd scope on the DHCP server for this address range went well and once the ip-to support additional parameter has been done on the router the PCs in the new building could fine DHCP to the domain controller in the main building. Everything is good.

  The question is now, we are moving PC between the two buildings, I was wondering if it is ok to keep the existing reserves for the PC in one scope and have a duplicate for her in the new scope assign the new IP address. Of course, the PC cannot be in two places at once and the DHCP console doesn't; "t seem to complain about the same MAC address used in two staves, but I don't really know whether it is advisable or not. Basically, our operations staff become a little miffed at having to remove a single scope of reservations and recreate them in the 2nd scope when the PC to move between buildings.

  So the questions is safe / advisable to do it or not?

  Kind regards

  Craig

  Support is located in the Windows Server Forums:
  http://social.technet.Microsoft.com/forums/en-us/category/WindowsServer/

• "Unable to contact your dhcp server.

  I can't connect to the internet.  I'm on a wired connection.  My system is Windows XP Professional with the media center.  I get the 169.254 ip address automatic with the subnet 255.255.  I tried releasing the investigation period, renewing the period of investigation (failed to contact my dhcp server), uninstall and reinstall the protocol tcp/ip (which gave me a false message of connectivity with the automatic ip and the subnet assigned by dhcp), uninstall and reinstall the driver, my dhcp that is activated.  I've tried everything I can think of or find.  I need to some tips and suggestions.  Thank you!

  Thank you all for responding.  I tried all the software solutions that I know and it was recommended to try.  Nothing.  I have only that it is a hardware problem.  I'll install a new Ethernet card and see what happens.

• An error occurred while renewing interface wireless network connection: unable to contact your DHCP server. Request a expires.

  I use an Acer Asspire One with Windows XP. We have wireless through AT & T Uverse. The netbook has an Atheros AR5007EG Ethernet card.

  A number of things have taken place lately: I had not used the Acer for some time and the battery was dead and would not recharge. I could book until when it was plugged, but could not get on the Internet. I found online that the solution to the battery problem was to download a new bios that worked wonderfully and it is now loaded. Recently, our AT & T router died and was replaced. I put the new WEP keys in two other computers, and they connect to the Internet. I can't connect to the Internet with the Acer. I tried ipconfig / renew and get the error message: "an error occurred during renewal of the wireless network connection interface: unable to contact your DHCP server.» Request a expires. No operation can be performed on Local area connection while it has its media disconnected. "On the tab"Choose a wireless network", it shows my network and said"absorbing the network address"but nothing happens. When I do ipconfig I see that there is no IP address.
  I took the computer to Starbucks this morning, ran ipconfig / renew and she acquired the IP address and I was able to connect to the Internet. I brought the computer home and tried and failed to connect. The IP address is back to 0.0.0.0 and the error message appears when I try to renew it.
  I hesitate to make a lot of changes since it was working with a different network.
  Original title: IP address is missing
  These forums are wonderful. I tell myself that I've saved the cost of a new battery using the bios, I found on a forum!

  Hello

  DHCP - Dynamic Host Configuration Protocol is a protocol used by devices computer network (DHCP clients) that dynamically distributes the IP address of the destination host. Now the error indicates that your computer is not able to communicate with the server and assign the IP address.

  Method 1:

  Let us try to disable the firewall and check the issue.

  Note: Re-enable the firewall after checking the issue.

  Check whether the problem is resolved.

  Method 2:

  If the issue is not resolved, you can follow the steps from the link provided and check if that helps.

  How to reset the Protocol Internet (TCP/IP)

  http://support.Microsoft.com/kb/299357

  Hope this helps and let us know if you need more assistance.