Cisco Infrastructure :: 1811 IOS DHCP Server And DNS Host Record Look-ups
Apr 26, 2011
I have an 1811 configured with dhcp scope and generally it works correctly. I have a host on the vlan/subnet that the scope is assigned that can receive an IP and all the specifics from the dhcp server. [code]
The host on the vlan/subnet should use the router as the dns server to resolve static hosts that are configured on the router itself. Can an IOS DHCP/DNS server do this?
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Oct 18, 2007
I 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]...
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Oct 21, 2012
trying to upgrade an 1811 to the latest firmware. [code] just seems to always boot back to the original file and not the one i just tftp'd up. could it be that this router requires additional ram to support this ios?
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Mar 7, 2013
They want to make audio recordings of their meetings, and have them end up on the server. I'm trying to figure out how to do this with a minimum of setup and post-processing. I'm also an audio guy, so I understand a lot of the tech issues. I had was to use a USB mic connected to USB to LAN converter to connect it to a computer that was authenticated on the network, and have recording software write the audio file to the server. I'm using a Windows Server 2008 with Domain-based authentication. The network is running through a Cisco Catalyst 2960 switch.
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Oct 4, 2011
How to force the Cisco 1811 Router to read a Transcend CF 128MB? [code]
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May 15, 2012
I've heard that you can configure an 1811 router as a terminal server for remote console work.I have several of them in the lab and would love to try it out.
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Jun 23, 2011
My ISP waits a definite host name from me to return my white IP address via DHCP. Can I set this parameter in RV220W router? I don't find such parameter in IPv4 WAN configuration page.
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Dec 16, 2010
I am using a 1811W and CCP for configuration. I am trying to assign client names to devices on the LAN so that when a network scanner is used, the client name is displayed. I have attached part of the running config after a binding has been done. My assumption is that the scanner should now show 192.168.1.109 as name <Supermicro>, but the name is blank. Is this configured correctly for what I am trying to acheive?
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Jun 26, 2011
I have an ASA 5505 with software version 8.2(1). It is making DHCP requests for IPSec clients that connect to the ASA. The DHCP requests packets the ASA makes have an extra '00' appended to the hostname field, and the length field is the size of the hostname + 1. The DHCP server is Microsoft Server 2003 and this causes the hostname to be registered with an unknown character which appears as []hostname. Then when server 2003 tries to update the DNS record, it fails because of the invalid character in the hostname. Is there anyway to have the ASA have the correct length for the hostname field in the DHCP packet, or a workaround that will solve this problem?
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Feb 22, 2013
I have this Minecraft Server hosted at TCP 25565.I don't use any router and is connected to an RG-Box directly.My Firewall is disabled and so is Avast!But still nobody can connect from anywhere. I gave them my external IP and nothing worked out.I did a "netstat -a" search, and yes, I do have a connection listening at this port TCP.Still, I get this "Connection timed out: Connect" error when trying to reach my server from anywhere out side of my network.I called my ISP regarding this problem, and they told me that they were only blocking port 24 and 25, all other ports is free to use. And they told me that I don't need to Port-Forward or anything, I just plug my computer directly into the RG-BOX, and I should be good to go. But I'm not.
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Jul 8, 2012
Instead of using a IP address I would like to use a host address that points to a NTP pool.An example would be:ntp server 0.north-america.pool.ntp.org Can this be done on the ASA series?
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Jan 20, 2013
Having a hard time hosting my email service on my DS212J. To be I honest, I have no idea where to start.
Info:
IP Address using Synology DDNS: example.synology.me
Domain: example.ca
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Nov 5, 2012
Trying to allow inbound access from any host outside to my LAN server on port 995. [code]
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Sep 29, 2011
i am facing the same problem now but am using windows 2003 server
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Aug 3, 2012
Minecraft 1.3 LAN server function fails because host IP bad. The host (a laptop) connects to the LAN with a proper 10.0.1.X type address, but this particular laptop uses a 169.* address when it establishes/reports the game (instead of it's 10.0.1.X) and no other computer can connect to it. Other computers DO establish/report the 10.0.1.X address they receive from the wireless router, and they can host just fine- but I really need to get the one laptop to serve as host since it has more horsepower.
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Apr 30, 2011
recently I had some malware on my Windows XP Professional (version 2002), so I followed a guide at Bleeping Computer [URL] to get rid of it. Problem is, for some reason, after I finished, I could no longer access the internet!When I try, FIrefox gives me their "could not connect" message: "Server not found. Firefox can't find the server at [site]." Check the address for typing errors such as ww.example.com instead of [URL]"When I try to log into MSN, the troubleshoot says I have a problem with my DNS and Key Ports.I'm not good with computers so I Google'd and found some ping-ing instructions. When I tried to ping [site], I get: "Ping request could not find host [site]. check the name and try again." This happens regardless of the site I use.Lastly, I tried "ping 127.0.0.1" from a troubleshooting site. It gives me: "Pinging 127.0.0.1 with 32 bytes of data:
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
Reply from 127.0.0.1: bytes=32 time<1ms TTL=128
[code]..
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Feb 16, 2012
So I have a proxy server in my home that all the computers use to access the internet (XP Pro). I edited the host file on the proxy to redirect traffic for various reasons (ad blocking, etc.) But I have noticed that it doesn't seem to affect the computers that use the proxy. For example one entry in the host file could be 127.0.0.1 abc123.com so that abc123.com would loopback to the localhost. For some reason this isn't working. Is there anyway to get this to work without changing the host file on each individual computer?
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Mar 17, 2011
I am having some trouble understanding extended control lists. I am trying to prevent a certain host on LAN1 from accessing a server on LAN2, while still allowing the host access to the rest of LAN2.This is what I thought the command should be:
access-list 100 deny ip 175.16.1.2 0.0.0.0 175.17.2.2 0.0.0.0
My understanding was that:
Green = source & mask
Red = destination & mask
However this seems to stop all my other hosts on LAN1 from pinging the server also.
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Mar 9, 2011
We are using an ASA with 8.4 in transparent mode. Connection fails when a host on inside tries to connect to a server on outside. This server uses mac-address 0100.5E00.0000 to load balance but replies with real mac-address.Firewall logs "Deny TCP".ARP inspection is disabled.
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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
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Mar 3, 2013
I have a 5520 in production at a customer's site between an outside 802.11 network and an inside server. The server can get to outside hosts OK, and the traffic is being NATed properly, and sockets initiated by the server on the inside can pass data both ways, but I need to allow outside hosts the ability to send 'announcement' UDP packets to the inside server. I thought this might be an outside-NAT-required issue to get the traffic routed, but I need the inside server to see the actual outside host source IP in the UDP packet, so I basically set the outside host up similar to the inside host, just without the NAT table on the firewall -- it's subnet is outside the destination (inside server) subnet, and its gateway is the outside interface of the ASA, the same way the inside server is able to get to hosts outside. The firewall should just route the packet with a destination of the inside subnet once it sees that it hits a 'permit' ACL.
I have the appropriate ACL's set up, and when I do 'show access-list' I see policy hits for the 'permit' statements where the outside host is generating the announcement and it's hitting the ACL. I even duplicated the ACL into list 101 and 102, and applied 101 for inbound traffic on the outside int, and applied 102 for outbound traffic on the inside int, and I'm seeing policy hits on both permit statements outside and inside, so it looks like the traffic is being passed on to the inside interface and permitted, but the server isn't seeing the packets.
I can ping the outside interface from the outside, but cannot ping the inside interface or any inside hosts from the outside, even though I have 'permit icmp any any' enabled on the ACL on both ints. When I remove the firewall and put the outside clients on the same subnet, the server sees the packets just fine.
I set up the same scenario in my lab with an ASA 5505, with the same results. Below is the running config from the 5505 in the lab. The production firewall is running a slightly older version of ASA, so I made the configuration as basic as possible on the 5505 to match the config in the field:
: Saved
:
ASA Version 8.3(1)
!
hostname ciscoasa
enable password Guh9Xxhb9mcC8lV1 encrypted
passwd 2KFQnbNIdI.2KYOU encrypted
names
!
interface Vlan2
description Outside WAN Interface
nameif outside
security-level 0
ip address 192.168.10.1 255.255.255.0
!
interface Vlan3
description Inside LAN Interface
nameif inside(code)
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Mar 3, 2013
I ran into a very interesting problem that occurred today and I'm trying to figure out why it happened. If it was one ASA 5505 that just required the reboot, then I'd have just chalked it up to a glitch, but when we built a new AD/ DNS server on the main network at the main site and changed the 3 Remote site ASAs to point to the new DNS server in the DHCPD options, none of them could ping any local host names to the DNS server at the main site they were now pointing too, but external host names { URL} all translated and pinged fine.
From a laptop on one of the remote sites, we could ping the new AD/DNS server(192.168.0.3) and the old AD/DNS server(192.168.0.2) and everything else at the main site, and telnet to port 53 showed successful across the Easy VPN from the Remote site to the new server at the main site. When wire shark was added to the new DNS server at the main site, the DNS request and replies for {URL}, for example, came and worked fine, but any requests for local resources never made it to the server from the remote sites.
A reboot of one of the Remote Site ASA's corrected the issue. Then I rebooted the other two remote site ASAs, and now DNS was working fine for everybody. I had also tried clearing the ARP cache on the ASAs before resorting to rebooting them. I also tried rebooting the laptop thinking the local DNS cache needed cleared before resorting to rebooting the ASAs. I'm struggling to understand why external, public host names made it through and resolved from the remote sites to the new server at the main site, but anything local failed before even reaching the new server(The new DNS server could resolve requests made by computers at the main site, but the remote sites that traverse the Easy VPN from the ASAs failed). The new AD/DNS server is the only server configured for DNS for all remote site computers.
Is any of this making sense? I'm wondering if clearing the x late or local host tables would have corrected it without having to reboot. I'm just trying to grasp the understanding here and figure out what happened.
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Mar 11, 2003
I need to do one Catalyst 5500 as a TFTP server.Can I do it?Is the catalyst available to be a tftp server?
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Nov 30, 2011
i trying to set up a terminal server, 2811 with an HWIC-16A und two octo cables. [code] connect and sometimes not. It seems the connection is established but i don't get a prompt von the target device.The target devices are cisco 2811 and cisco catalysts 3560.
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Feb 18, 2013
We currently support multiple companies' infrastructure on a single Prime Infrastructure 1.2 server. We are using lifecycle licenses. Is it possible to assign licenses to various Businesses? For example, can I upload 100 licenses for Company-X and 100 licenses for Company-Y and when adding devices into Prime, tell it which licenses pool to pull from? Could something like this be accomplished with virtual domains?
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Feb 2, 2013
I need to order LMS for one of our customer with 500 devices and reporting capabilities ..... So i chose base license "R-PI-1.1-K9" and 500 device license "R-PI-1.1-500-K9" and Compliance Management - 500 Device License "L-PI-1.1-CM-500"? i tried to search server capability for my requirements & Operating system and couldn't find it .....
1) What is the server requirements ?
2) What is operating system (windows 2008 or VMWare VMware ESX/ESXi Version 4.1 or 5.0)
3) Is their any dedicated appliance from Cisco ?
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Apr 12, 2013
My new server Cisco UCS C210 M2, that has only one hard disk and I need to set up windows server 2008 R2 SP1 When I making the installation in the windows installation stage, the completing installation part the server is hanging and stop in this state I tried to change the windows image and still the same problem I need to know if there are a certain criteria like PCI configuration or any change on this server hardware before installing windows server 2008 R2 [URL]
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May 24, 2012
I have a Cisco 831 router (c831-k9o3y6-mz.124-5c.bin) that cannot backup the config to a local tftp server. I have seen this behavior on a few different Cisco devices over the years and have never found a solution. The connection is made to the tftp server (in this case tftpd but similar behavior on any tftp server) and a blank file is created on the target machine file system, but the data is never transferred.
The router shows %Error opening tftp://192.168.0.2/router-confg (Timed out) [Failed]
The tftpd log shows 5 repeated attempts at the file write.
Connection received from 192.168.0.1 on port 53570 [25/05 11:56:40.922]
Write request for file <router-confg>. Mode octet [25/05 11:56:40.922]
Using local port 61607 [25/05 11:56:40.922]
<router-confg>: rcvd 0 blk, 0 bytes in 3 s. 0 blk resent [25/05 11:56:43.922]
Connection received from 192.168.0.1 on port 53570 [25/05 11:56:43.923]
[Code]...
This is also stopping me upgrading the image on the router as I cannot transfer in the other direction either.
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Jan 26, 2012
actually i have problems with the connection between a Cisco 3750 and P750 server, the Cisco Gbic is X2-10G-SR and the card of the server is 10 Gigabit Ethernet-SR PCI Express Adapter, both uses 850 nm wavelength but i cant see link between the two cards, the physical connection is with a fiber cable with a conector SC in the server and LC (cable adapter) in the switch.
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Jan 7, 2012
I have a DLSW connectivity between 2800 series router and 7206 router. AS 400 is directly connected to 2800 series router and other server is connected directly to 7206 router. now i want to add one more server which will work as backup for the server connected to 7206 . What would be the connectivity/configuration to make it working in case primary server connected to 7206 is down or connection would automatically needs to shift on its backup server.
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Jun 27, 2011
I have a host that can successfully connect to a PIX 515E (7.x OS) via VPN Client; however, I have no IP routing to the LAN from the remote host.The VPN IP pool works finem,The LAN default gateway is the inside interface on the PIX; the network is flat L2 behind it.The default route on the PIX points out; no other routes are defined,The VPN remote host can be pinged from LAN hosts, but the VPN remote host cannot ping any LAN host, not even the PIX inside interface.
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May 7, 2012
ASA 5510
Ver 8.2(5)
I have been looking all over the place for the answer of how to allow clients on an IPSEC VPN to ping from host to host.
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Feb 10, 2011
I'm just wondering if its possible to ping an IPv4 host using the IPv6 host assuming that the NAT64 has already been implemented?
[code]...
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