Cisco VPN :: 881 Router - Getting DHCP On The Wan-interface?

Jan 21, 2013

I configured a Cisco 881 as a vpn-client.When I configure the wan-interface with ip add dhcp , it never gets an IP-address.When I remove the crypto map from the wan-interface , the interface gets an IP-address without any problem.According to examples in the Cisco documentation, I should work; and it works on a 831.

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Linksys Wireless Router :: DHCP Web Interface With E3000

Jan 29, 2011

When I click on "DHCP Reservation" button in the web interface of the E3000 I don't see any information about the current devices and the reservation list.This problem occurs when my sattelite reciever tries to get an IP address from the DHCP.the name of the receiver is "dream box" (no special characters).I didn't have any problem in the past with my previous router (3COM)Since there are error messages in the page (screenshot is attached), I've tried to use different browsers but the result was the same (Firefox, Safari, IE 8)

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Cisco WAN :: ASA 5505 DHCP Outside Interface

Feb 21, 2010

I have an ASA 5505 configured to get a DHCP'd IP address from the ISP on it's outside interface.  The problem I am seeing is when the ISP  renews their IP address, the ASA 5505 is still holding on to the old IP address information.  I have to either manually renew the IP or reload the ASA.  I have the potential of rolling out hundreds of these devices and I would not like my customers to have to reboot their ASA everytime the ISP's DHCP lease experies.  I am using an easy vpn autoconnecting to an ASA 5520.  Static IP's are not an option on the outside interface of the ASA 5505's.

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Cisco VPN :: ASA5510 8.2 Outside Interface With Dhcp

Mar 14, 2013

on the outside interface i cant perform the command ip address dhcp setroute.I get the error: IP and subnetmask form invalid pair indicating broadcast or network address.The commands are there when I do the ? command.  It just will not accept the command with or without dhcp.I am trying to test an ASA-5510 as a 4G failover to our ASA-5520.  This is Verizon's solution but they did not provide IPs, they use passthru on the 4G modem so I'm trying to set up dhcp.  It worked a few days ago.  Not sure what Im missing. The IP I got last time from Verizon was 192.168.0.199. 

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Cisco WAN :: DHCP On WAN Interface 6509

Mar 1, 2011

I have a 6509 with SUP2 w/msfc2 at home, I am currently have dsl for internet with static IP addresses. Due to AT&T not wanting to support faster speeds in my area, I have to look at another option. All of these will be dynamic IP addresses, cable, uverse, etc.
 
I need to be able to enable dhcp on the wan interface so I can connect directly into one of the gig ports (either on SUP2 or 6316) or on a 10/100 port on a 6348.
 
I have the following image installed s222-adventerprisek9_wan-mz.122-18.SXF13.bin, according to Cisco's feature tool, it is supported.
 
I have tried "ip address dhcp" on the interfaces but they will only accept "ip address x.x.x.x", I looked at "ip dhcp" as well and only get the option for "relay".
 
I would hate to have to put something else in the mix to handle the dhcp portion. I may be keeping the adsl for my mail server traffic and backup in case of an outage on the new provider. So I need to be able to track if a link is up.

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Cisco WAN :: ASA 5505 - DHCP On Outside Interface Keeps Renewing

Nov 21, 2011

I've been running a cisco asa 5505 for quite some time and it has been running fine, now all of a sudden it starts to renew it's outside dhcp adress like every 2 hours. I dont think it's the ISP since I have another device connected also using dhcp to the same ISP and it doesnt renew itself, it's just the ASA. Rebooting it, makes it pick up an adress straight away. The interface seems to be up, the GUI just reports "no ip adress" and then the ASA get's a new IP after about 10-15 min without one. Pressing the renew IP adress button in the GUI throws an error.

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Cisco :: 4404 DHCP For Secondary Interface Only

Jan 8, 2012

I currently have the managment interface set to my internal network using our DHCP server.  We also provide another interface to WLAN for a chartity organization.  Their interface and WLAN are locked out of our network (no routes, no nothing) with only VLAN tagging sending out over our backup internet connection.  I have been tasked to take over their DHCP scope (255.255.240.0).  I added the scope into the 4404 just fine but can't seem to assign it.  So, for the sake of argument lets say:

Interface:
management     VLAN 10     10.10.10.10          DHCP = 10.10.10.15
charity               VLAN 20     192.168.160.2     DHCP = ????

[Code].....
 
If I tell the charity interface to use 192.168.160.2 for the dhcp scope it errors out.  I also tried the DHCP override in the WLAN with no success.  If I set either DHCP option for the charity to aim at the managment interface it does nothing as it can't find it..

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Cisco WAN :: 2600 - IP Won't Get Assigned To Interface By ISP DHCP

Dec 27, 2011

I've been using this setting for clients in small offices and what not,  and since all they wanted was to give another nutch of security to their network, we've been intalling cisco routers 2600 series still outhere for their internet connections and we had no issues what so ever, not until we run into cable isp provider, and their dhcp wont be able to assign our interface a dynamic IP, this is the setting aplied to the router interface;
 
interface fastethernet0/0
ip address dhcp
ip nat outside
no ip redirects
no ip unreachables
no ip proxy-arp 
 
Why it wont be seen or assigned an ip by their dhcp, I talked to their isp and they assigned a static ip (private one) and we still have the same issue, if i connect a pix 506e interface with the ip add dhcp assigned  to it gets a dynamic ip right away...

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Cisco WAN :: 886G - DHCP Interface Reset

Dec 26, 2010

We have a Cisco 886G router connected to the internet. The router receives an ip address. We experience however a problem when the lease time expires. The router does not send a DHCP request to renew it's ip address in time. This causes an interface reset, and connectivity loss, after the lease time of 8 hours.
 
We are running IOS 880data-universalk9-mz.151-3.T.bin. Config on DHCP receiving interface is:
 
interface VlanX description To Internet MODEM ip address dhcp ip access-group TEST in!

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Cisco WAN :: DIR-655 / How To Dhcp Auto Interface Port 3560

Apr 21, 2013

i have a adsl modem that is sending dhcp reqeust and i want to use that on my cisco switchs 3560 48 ports.i want to use the interface port 0/48 as a WAN connection and i want to use the other interfaceports for DCHP pool.i have an d-link (dir655) router at home and i want to have the same situation on my cisco switch my WAN interface get from a DHCP reqeust an ip adress from  the provider like 10.10.123.44 (for the cisco switch would this interface port gig 0/48)then i want to configere my  LAN as a DHCP pool like 192.168.0.1 (for the cisco switch would this interface port gig 0/1 - 47 .

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Cisco :: WLC 5508 / Failed To Get DHCP Response On Interface

Jul 10, 2012

i have WLC 5508 showing the below Logs , which prevent the users from connecting to the SSIDs , also its disconnecting the associted users DHCP Socket Task: Jul 11 09:54:08.992: %SIM-3-DHCP_SERVER_NO_REPLY: sim_interface.c:1039 Failed to get DHCP response on interface 'interface-02'. Marking interface dirty.*mmListen: Jul 11 09:54:08.638: %MM-3-INVALID_PKT_RECVD: mm_listen.c:7671 Received an invalid packet from 10.21.1.25. Source member:0.0.0.0. source member unknown.it shows 3 to 4 times durring 1 hour ,

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Cisco :: WLC5500 - Add Third DHCP Server To WLAN Interface?

Aug 2, 2012

I'm running a system that requires a third (and potentially fourth) DHCP server to be setup on each network in my network.  The first two devices are Windows DHCP servers serving IPs from different address ranges for failover. The third DHCP is just a listener to receive OS information and device names to be logged in a database.
 
Currently this works like a charm for my wired clients as I can add in the third and fourth ip helper-address on each vlan and the information is received by the listeners.  However, I cannot find anywhere in my WLC5500 to setup these extra two DHCP helper addresses.
 
The wireless vlan on my layer 3 switch has all the ip helper-addresses, but this doesn't seem to work, and the devices just use the DHCP servers set on the interface in the WLC.

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Cisco WAN :: 881G DHCP Configure To Use Both Cellular Interface

Jan 22, 2013

I would like to configure the 881G to use both the cellular interface and Fe4 WAN port for internet connectivity.Interface Fe4 is connected to an ADSL router.
 
I have configure each interface with a default route and weighting:
 
ip route 0.0.0.0 0.0.0.0 Dialer0 200
ip route 0.0.0.0 0.0.0.0 FastEthernet 4 100
 
I need to configure Fe4 to get an address as a DHCP client:
 
interface FastEthernet4
ip address dhcp
no shut
duplex auto
speed auto
 
How do I remove Fe4 from VLAN1? There is some existing config around VLAN 1:
 
interface Vlan1
ip address 10.73.0.1 255.255.255.0
ip helper-address 192.168.140.13
ip tcp adjust-mss 1400
no autostate
 ip sla 100
icmp-echo 10.64.4.15 source-interface Vlan1
tag 3G Keepalive
frequency 10
 
Then I guess I need to adjust my Internet-IN ACL to allow broadcasts and UDP 67 and 68?

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Cisco WAN :: 2800 - Interface Downtime In Order To Initiate DHCP

Feb 26, 2012

I'm trying to find out what is the minimum downtime for a Cisco 2800 series LAN interface configured as DHCP client, in order to initiate a new DHCP discover. How much time does it need to take for the Cisco to "sense" the phy disconnection ?

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Cisco Firewall :: 5505 - Opening Ports On DHCP Outside ASA Interface

Feb 25, 2011

I am used to setting up access-lists on outside interfaces with ip addresses that are static. I have recently been given a site that is using a dyndns.org client for name to ip address resolution on an outside interface that is dhcp assigned. I created an access-list to open up ports 41794 and 41795 to an engineering application but everytime I try to connect from the outside I get a syn timeout. The application works when inside the lan. Basically I want to allow outside connections from anywhere on the outside to go to ports 41794 and 41795. I am running a Cisco ASA 5505 on version 7.2(4) Below is my conifg. what I may have misconfigured?
  
: Saved:ASA Version 7.2(4)!names!interface Vlan1 nameif inside security-level 100 ip address 172.31.2.1 255.255.255.0!interface Vlan2 nameif outside security-level 0 ip address dhcp setroute!interface Ethernet0/0 switchport access vlan 2!interface

[Code].....

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Cisco Wireless :: WLC CT2504 / Interface IP Cannot Be Used As Internal DHCP Server IP

Apr 5, 2012

I've got a new CT2504 controller with software version 7.0.220.0 Regarding to [URL]I've tried to configure the internal DHCP on a dynamic-interface, but this is not possible:(Cisco Controller) >config interface dhcp dynamic-interface vlan401 primary 172.16.x.3 vlan401 Interface IP can not be used as internal DHCP server IP It works, if I use another IP (aka DHCP server) in the same subnet or in another subnet. It works also for the management interface.
 
(Cisco Controller) >show interface detailed management
 
Interface Name................................... management
MAC Address...................................... d0:c2:82:xx:xx:xx
IP Address....................................... 10.2.x.135
IP Netmask....................................... 255.255.255.240
IP Gateway....................................... 10.2.x.129

[code].....

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Cisco Switching/Routing :: 3750x Binding Between A Switch Interface And DHCP

Nov 8, 2011

I am looking for a way to bind between a switch interface (cat 3750X) and a DHCP server reply.The switch can operate as the DHCP server .a PC connected to interface Gi 1/0/1 will lways get IP address 10.0.0.1 because it is connected to interface Gi 1/0/1, a PC connected to interface Gi 1/0/5 will lways get IP address 10.0.0.5 because it is connected to interface Gi 1/0/5 and so on... (no matter the source MAC address who sends the DHCP request).

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Cisco Wireless :: 2100 No Internal DHCP Over Another (Guest) SSID / Interface

Feb 24, 2013

I have a cisco wlan controller (2100) running software 7.0.235.0. I have the internal private wlan running off of port 1 and that is working fine with an internal dhcp server.Is it possible to setup another ssid (guest) and have the interface directly linked to a static ip on the WAN and also use the built in cisco internal dhcp server?

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Cisco Firewall :: 5505 - Show Current IP Address Of Interface (dhcp)

May 8, 2012

Is there any way of showing the currently assigned ip address for an interface configured to use DHCP on an ASA 5505?

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Cisco Firewall :: Configure DHCP Server On Inside Interface ASA 5505

May 9, 2012

We've just started with the ASA 5505. We do run a DHCP server on the inside interface, so it is in the same VLAN 1 as all of the clients. However, we cannot get it to work.We can't use DHCP Relay, as the ASA 5505 only allows to relay to DHCP servers in a different subnet.Or do we have to move the DHCP server to a different subnet. If so, how would we configure that scenario?

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Cisco Wireless :: 1141 - Get 12.4 Code To Assign DHCP Address To Ethernet Interface From Server?

Nov 7, 2012

How do i get the 12.4 code to assign a dhcp address to my ethernet interface from my server? I deleted the default config on the 1141 and searching has not turned up anything useful.

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Renewing Interface Wireless Network Connection - Unable To Contact Dhcp Server?

Feb 16, 2011

Started this morning woke up checked my phone no wifi hmm weird checked my hp tpuchsmart connected but jo internet access checked my router(netgear wireless N 300) made sure my modem and all wires are connectedNext went to my router ip 192.168.1.1 after reading some forrums i thought maybe if i changed the ip or sum i would have worked i know dumb though.. any way i believe i disabled my dhcp.. and one of the ip ad on the same page to 192.168.1.3 thats when it got worst i tried ipconfig/release saysNo operation can be performed on bluetooth network connection 2 while it has media disconnected.No operation can be performed on local area connection while it has its media disconnected(Its a wireless connection from my touchsmart to my router) I have tried goin back to the routers page but i can no longer find itI have also tried ipconfig/renew but i get this...No operation can be performed on bluetooth network connection 2 while it has its media disconnectdAn error occured while renewing interface wireless network connection : unable to contact your dhcp server. Request has timed out.No opration can be performed on local area connection while it has its media disconnected

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Cisco Routers :: RVS 4000 HTTP Management Interface Hangs At Port 80 And DHCP Stops Working

Dec 1, 2012

This is the RVS 4000

Firmware version 1.3.3.5
STAR 9202 Chipset
64 MB DRAM
8MB Flash
 DOS, Block WAN Rq, Remote mgmt all OFF
IPSec Tunnel none used

[code].....
 
Every day or so the Router becomes unresponsive to the HTTP mgmt interface, as well as it no longer offers DHCP services.then this happens the only remedy is to power reboot.

Everything comes back online just fine, however, the LOGS are initilaized so no data to figure out what`s going on.My next step is to setuo a syslog server and have the logs copied out.(  No, I have no Torrents running at all, but I do have several devices like AppleTV, PS3s etc that run streaming Video plus I have the SPA3102  )

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Cisco Switching/Routing :: 3750 DHCP Server Handing Out IP Addresses To Client Connected To VLAN5 Interface

Feb 23, 2012

Haveing 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.

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Cisco Switching/Routing :: 3550 / 2950 DHCP Relay Option To Router Handing Out DHCP

Apr 3, 2012

Have a client wanting to hand out public ip addresses to all clients from a PFSense Firewall terminating the internet connection.
 
How do I allow the Cisco Switches currently in place, configured with private ip addresses in the 10.10.x.x ranges and Vlans, where the main 3550 layer 3 has defined dhcp scopes for each vlan, to relay dhcp requests from all vlans to the PFSense firewall?
 
I assume I would take off the currently defined dhcp scopes for the vlans and configure each vlan/switch with the ip helper address and specify the PFSense firewall and that Nat would have to be disabled onthe firewall?

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Cisco WAN :: 1841 Router - HWIC Interface Card - Cannot See Interface In Configuration File

May 9, 2012

i have a 1841 cisco router and i recently purchased a 1 port HWIC wan interface card. My problem is that I cannot see the interface in my config file. Is there something i am missing?

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Cisco WAN :: Set Up WAN Interface On Fast Ethernet Interface Of 877 Adsl Router

Apr 9, 2011

Is it possible to set up a WAN interface on a FastEthernet interface of a Cisco 877 Adsl Router ?Due to my ISP, i've to use an external VDSL modem and must connect it to my cisco 877 router (and leave it's adsl interface unused).But i don't know how to set up a wan port, other than the adsl interface itself (dialer0), on my cisco.

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Cisco Switching/Routing :: 2921MS DHCP NACK With DHCP Relay?

Nov 11, 2012

I have some DHCP trouble since I subnetted my network with a 2921. My clinets are in 172.16.2.0/23 and DHCP servers are in 172.16.5.0/24.Sometimes, randomly I guess, I get NACK from my DHCP server, and if I look into DHCP logs I got something like this:
 
15,11/09/12,09:52:27,NACK,172.16.3.172,switchE51D12.host.com,A0CF5BE51D12,,0,6,,,,,,,,
15,11/09/12,09:52:28,NACK,172.16.3.172,switchE51D12.host.com,A0CF5BE51D12,,0,6,,,,,,,,
15,11/09/12,09:52:29,NACK,172.16.3.172,switchE51D12.host.com,A0CF5BE51D12,,0,6,,,,,,,,

[code]....

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D-Link DIR-655 :: DHCP Turned Off As ASA 5500 Is Providing DHCP

May 30, 2011

I have a Cisco ASA 5500 as the main router with a DIR-655 as a wireless access point behind it.  DHCP is turned off on the 655 as the ASA is providing DHCP.  This worked great for about a year and now suddenly, without any changes, I'm having problems.  The only thing that connects without a problem is a laptop, which shows up on the device list with an IP.  Other devices have problems.  iPhones connect, show an IP on the device itself, but when listed in the connected list on the 655 show no IP.  The connection is super slow.  An Airport Express will connect, but again, shows no IP in the connected list on the 655.  Using the ethernet cable from the Airport Express, nothing can get an IP.  I can live with the iPhone not connecting, but the Airport Express not connecting is a major problem.  Any reason why this would just stop working one day?

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Cisco Switching/Routing :: ASA 5505 Cannot Ping From Inside Interface To Outside Interface

May 1, 2012

I have a Cisco ASA 5505 and I have my internal and external interfaces configured but I currently cannot ping from the inside to an IP Address on the outside.  I had this setup and working and I have another set of equirement that I am replacing that is working with my service provider so I know it is a configuration issue.  When I ping 4.2.2.2 for example I get:
 
Destination host unreachable
 
Do I need to add a static route from my inside interface to my outside interfaces?   

: Saved
:
ASA Version 8.2(5)
!
hostname pxasa

[Code].....

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Cisco Firewall :: 5540 ASA Interface Input Error On Outside Interface

May 28, 2013

We are having Cisco ASA 5540 having Cisco Adaptive Security Appliance Software Version 8.0(5)23 at certain time of moment daily wer are facing latency and packetdrop wherin when I checked for ASA Interface which gives me " Input Errors" on outside interface ,so can any one tell me what are the causes to get input errors on cisco asa outisde interface.

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Cisco WAN :: 1T3 / E3 / 2951 - No Interface Corresponding To Module When Show IP Interface Brief

Feb 13, 2012

I have a 1t3/e3 card in a new 2951. When I statred the router, I found no interface corresponding to this module when do "show ip interface brief"

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Cisco Firewall :: PIX 501 / Can Traffic Goes From Inside Interface To Outside Interface

Oct 9, 2011

I have Pix 501 firewall and I'm just configuring the device for "Email Server" to allowing POP/SMTP.
 
Inside Interface Address: 132.147.162.14/255.255.0.0
Outside Interface Address: ISP provided IP address
 
My question is can my traffic goes from inside interface to outside interface? (because the inside interface address not from 10.0/172./192.168 private address)Also I'm allowing internet from this email server (132.147.162.14) so what my access list to be configured? and what my subnet mask shoud be there?
 
Pix(config)#access-list outbound permit tcp 132.147.162.14 255.255.0.0 any eq 80
Pix(config)#access-list outbound permit udp 132.147.162.14 255.255.0.0 any eq 53
Pix(config)#access-group outbound in interface inside

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