Cisco WAN :: 2901 Set As DHCP Unable To Ping To Internet?
Jan 10, 2013
I need another set of eyes on my config. I am trying to set up my router for a basic connection for the time being. I set my gig 0/0 port to dhcp I see traffic being sent and recieved but I can not ping 8.8.8.8. I am connected to a basic comcast modem from 0/0 I have also tried setting gig 0/0 to 100 full. I do have IP routing enabled. I believe I have my acl's configured correctly. I am wondering at this point if I need a static block of IP's from comcast.
hostname vpn-router-2901
username ****** password *****
enable secret *****
[Code].....
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Jan 18, 2013
From My Router that connects to Cable modem i am unable to ping website 4.2.2.2I am able to ping all other websites fines.Same website i can ping from my pc and all other switches fine.Router has only 1 ACL thats for NAT.
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Jul 1, 2012
I have two routers 1921 and 2901 and both of them are connecting to one Reliable Internet Line from one ISP. 1921 master router and 2901 as a Slave. this is my question, how i can make a Backup DHCP Sever in 2901 as a same IP address generation?
Example :
1921-------> Ip Generator 10.1.1.0 /24
2901-------> Ip Generate 10.1.1.0 /24
both generate same ip address, when the Master is lost, Slave could be Covered the LAN.
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May 2, 2012
i'm interested if it's possible to set the NTP server via DHCP on an 2901 Router with 15.2(2) image.
i configured the interface gigabit 0/0 as dhcp client. The DHCP Server sends to me DNS, Default GW and NTP. All is working fine, but the NTP will not be configured. i tried to add an DHCP option request, but there is no NTP (42) value. [code]
is there any way to add the value NTP (42) for the DHCP request or isnt it possible?
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Jan 23, 2011
I have a home network of 3 cmputers. DHCP from router. 1 computer is not getting address. But if I assign it one, with same gateway and dns(not a duplicate ip of others), it can ping internally, and outside. I can do tracert to 8.8.8.8 and ping it (google DNS). But I can't get to internet. So - i can get out, but nothing coming in. I have checked firewall.
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Apr 5, 2013
I have setup 5505 ASA for Testing purposes. It has static route to layer 3 switch on outside interface that goes to the internet.
ciscoasa# sh route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
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Apr 3, 2013
I have just setup the 3G Wifi Router (Huawei 3G21WE) for my company at remote site for temporary use.Now we want to monitor the DVR and cameras installed on the site from head office but i am unable to do it.I have done the port forwarding on the router and using Dyn DNS and configured it correctly, but i cannot browse it from internet.I have also noticed that i am unable to ping the public IP/DynDNS from internet. also i cannot find any option to disable the firewall on my router.
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Nov 19, 2012
I have a netger router/moden connected to my phone line for broadband, an ethernet cable coming out of that to a netgear switch an then a cable going from the switch to fa4 on the 861. I can ping the netgear router from the 861, however, when I connect my PC to it, I am unable to ping let alone connect to the internet, the PC is getting an IP from the 861 and I can ping the fa4 interface from the pc. I just don't understand my I can not ping the broadband router, I even added a static route to the netgear with no luck.
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Jun 28, 2011
I found a tricky task for our ASA 5505 firewall. I am not able to go internet when using DHCP but I can access by using fixed IP address in client PC.Same IP, Same Mask, Same DNS, Same Gateway. All the same but no hope. Any configuration i missed in firewall?
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Aug 10, 2012
I can connect to the network but doesn't connect to the internet. I have tried a lot of ipconfig cmd's /renew said "unable to connect to dhcp server" and others didnt work all out of ideas.
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Nov 16, 2011
I have router connected to 2 3550 switches directly. 3550A and B switches are running HSRP. OSPF is running between Router and 2 switches.
From Switch B i can ping the Router Wan interface but not the internet sites. from Switch A i can ping any sites?
Switch B
3550SMIB# sh ip routeCodes: C - connected, S - static, R - RIP, M - mobile, B - BGP D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area N1
[Code]......
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May 7, 2012
I am using Linksys E4200 wireless router. I connected two machines, this way.
|LAP1|--------(LAN ethernet connection)----------|LinksysE4200|-------(Internet wired connection)--------|LAP2|
On the Linksys E4200, the Internet wired connection side, I gave static IP address which is in the same network range as that of LAP2.When tried to ping from LAP1 to LAP2, ping doesnot happen. Any settings by which I can ping from LAP1 to LAP2.
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Jan 20, 2013
Everything in my network works as a charm. Every host in my vlans can access and ping the internet with no problems. But, my main router does not ping the internet (Pinging either ip "173.194.71.104" or domain "www.google.com" do not work). I don't know how is that possible since my hosts can ping the internet. Below is my main router confiurations
!
hostname Internet_Router
!
boot-start-marker
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Jan 9, 2013
Internet ISP -> Juniper SRX 210 Ge-0/0/0
Juniper fe0/0/2 -> Cisco ASA 5505
Cisco ASA 5505 - >Inernal LAN switch.
1. Internet is connected to Juniper Ge0/0/0 via /30 IP.
2. Juniper fe0/0/2 port is configured as inet port and configured the Internal public LAN pool provided by the ISP. And this port is directly connected to Cisco ASA 5505 E0/0. Its a /28 pool IP address. This interface is configured as outside and security level set to 0.
From Juniper SRX, am able to ping public Internet IPs (8.8.8.8).
Issue:
1. From ASA am unable to ping public ip configured on Juniper G0/0/0 port.(/30)
2. From ASA no other Public internet IP is pinging.
Troubleshooting Done so far.
1, Configured icmp inspection on ASA.
2. Used the packet tracer in ASA, it shows the packet is flowing outside without a drop.
3. Allowed all services in untrust zone in bound traffic in Juniper SRX.
4. Viewed the logs when I was trying the ping 8.8.8.8 in ASA. It says "Tear down ICMP connection for faddrr **** gaddr **
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Jan 1, 2012
Physical devices are a Cisco 2901 (CISCO2901/K9) with GE0/0 configured as 192.168.1.1
Connected through a D-Link DGS-1210-24 configured as 192.168.1.202
Running on a domain with an HP domain server as 192.168.1.2
The 2901 was an EHWIC (VA-DSL-A oPoTS) on EHWIC 0/0/0
GE 0/0 on the 2901 is physically connected to the DGS-1210 which is physically connected to the server.
VDSL 0/0/0 is physically connected to the DSL jack.
So far the configuration reports all is connected, and I can ping the gateway of our ISP (using CLI or Cisco CP); however the server reports no internet connection and no workstations can access the 'net.
Once connected; I'd also like to allow ports through for use on the network (25, 80, 110, 443, 987, 1723) - but not sure on how to do that just yet!
Our IP is 202.27.19x.19x
Our Gateway is 202.27.217.5
[Code] ......
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Aug 28, 2012
My parents Windows 7 PC has suddenly stopped being able to connect to the Internet. Using the "Diagnose problem" feature in the Manage Network Interfaces panel results in a message claiming that it cannot reach the DNS server and that the connection needs to be reset. Doing so has no effect. It is connected to a DSL router via an ethernet cable.The NIC is set to dynamically receive its IP and DNS settings via DHCP which it obtains from the DSL router. Executing ipconfig from a DOS prompt shows that this is occurring as expected, with an assigned IP of 192.168.2.10. The gateway and dns are set to the IP address of the router, which is 192.168.2.1. Note that I can't even ping the router at 192.168.2.1.I also tried static settings in the available range and tried using open DNS IP addresses.
They also have a laptop which connects to the same router wirelessly using DHCP and it is working fine. Using this laptop, I can log into the router and see both it and the problem PC in the list of connected devices, each with the dynamically assigned IP addresses as seen using ipconfig on each. Unplugging the ethernet cable shows the connection status changing in the list of connected devices in the router. From the laptop, I can ping the router and running ipconfig shows that it obtains the same gateway and dns as the PC and the next available IP - 1292.168.2.11.So this leads me to believe the following:
1- The router, NIC and cat 5 ethernet cable are working fine at the hardware level.
2- The DNS settings in the router are fine, as the laptop works
Perhaps coincidentally, the same day it stopped working they received one of those bogus "This is Microsoft calling" calls claiming their PC was infected, but they had heard of the scam and hung up. Naturally, I started suspecting a virus, but a full system scan using McAffee produced nothing. If it was a DNS changing virus, would I not still be able to ping the router using the IP address?
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Jan 21, 2011
My old office uses Cisco 861 as a VPN router, with the WAN side setup to receive a dynamic IP assigned by Time Warner cable. Now we switched to a new office, with TowerStream which provide 4G SLA'ed 10Mbit service with static IP, and I get a Cat 5 ethernet down from it.
So all I did, was to go my "interface FastEthernet4", and typed ip address 173.243.123.123 255.255.255.252.Changed speed to "speed 100" and "full-duplex" (as instructed by the ISP).
I also did "ip default-gateway 173.243.123.124", which is the default gate way assigned by the ISP.I also typed "ip name-server 64.17.123.123" to setup the new DNS, am I doing anything wrong? I can't even use the router to ping google, but if I connect the laptop directly to the outside line, then it works, so I know the outside line is good.
Why can't I connect to the internet? I wasted several hours already trying everything in my book to trouble shoot a supposedly very simple configuration change. Do I need to change something related to NAT when changing to Static IP? My NAT was working just fine before when under DHCP.
The below is my full config (some IPs changed to preserve anonymity):
=============================================
Building configuration...
Current configuration : 16628 bytes
!
version 12.4
no service pad
service tcp-keepalives-in
service tcp-keepalives-out
[code].....
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Aug 23, 2011
A Windows Server 2008 r2 with 2 internet ports. One (IP: 10.0.96.132) connected to company intranet and one (192.168.10.1) as DHCP server connect to several PCs (192.168.10.**) through a switch.The problem is the PCs (192.168.10.**) can ping the DHCP server (192.168.10.1) , while DHCP server (192.168.10.1) can not ping (192.168.10.**).How to configure the server so that all these PCs can access the intranet?
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Dec 24, 2011
I have more than 10 PC om my Workgroup, using DHCP on network, but I have one PC alwaws got wrong IP (auto from dhcp), and can't connect even using static IP (status connect, but can't ping to gateway and other IP)Here "ipconfig /all" on one of PC that work. [code]
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Jan 15, 2012
I have a subnet for guest network access, both wired and wireless. We have a Netgear ProSafe that is trunked to a Cisco 2901 performing 'Router-on-a-Stick'. For most internal traffic, it all stays behind the ASA. But for guest traffic, I have a route-map that sets the next-hop address as the outside interface of the ASA. The question is, how can I still permit those users to access our internal DNS servers? Do I need any particular NAT translations, exemptions, DNS doctoring, hairpinning, etc.? I have an ACL on the inside interface that permits traffic from the guest networks to our internal DNS servers, and then the next ACL line denies any other traffic from the guest networks to any of our internal networks.
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Jan 28, 2013
I connects to the wireless box and has full signal but an exclamation mark is present.I have run some tests and the IPv4 and IPv6 say they have no internet access.I also run a full test and everything passed except the ping test which failed and it said: no response:default gateway response: dhcp server it suggested disabling security firewall but i'm not sure if that's the correct thing to do or even how to do that!
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Feb 22, 2011
"In the past I have noticed if I have one of my rigs running NAT and DHCP that my ping response times are lower compared to my router DGL-4300, when playing games. Is this due to the PC hardware being superior or is it a software/firmware thing?
Or is there a router out there that will perform better ping response time wise/ lag than my DGL-4300?"
Is this due to hardware or is it software/firmware? My NAT and DHCP box was a windows server 2003 configured with just those roles and my pings were in the 20-30 and I could host/join games no problem and no lag, but when I play through the Dlink DGL-4300 my pings would be 70-90 and some games I had lag issues and host/ join issues, sometimes it would work sometimes not.
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May 6, 2011
I have a PIX 515E that I want to use to as a border between my internet connection and my Cisco AIR1131AG. I have configured the PIX to have the outside interface as a dhcp client which gets its dynamic IP address from the cable modem. the AP is connected to the E1 inside interface. Now I could see the E1 interface from the arp table from the AP but I cannot ping it. From the firewall I don't see the ARP table from the firewall. and i cannot ping the AP. what is wrong with the configuration? side note, i am able to connect to the AIR1131AG from my laptop I was not able to retrieve an IP address.
FW1 - CONFIGURATION
interface Ethernet0 description uplink towards the techsavvy modem speed 100 nameif outside security-level 0 ip address dhcp setroute !interface Ethernet1 description >>> WIFI LAN ACCESS <<< nameif inside security-level 100 ip address 10.0.0.1 255.255.255.0
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Mar 9, 2013
*I have 2 cisco routers 2811 router A&B*using 0/0 for WAN and 0/1 for LAN on both routers*both routers are connected together with crossover cable to 0/0. recieve link and activity*both routers are on the same subnet Router A:0/0 192.168.1.1/24 - router A:0/1 192.168.2.1/24 ; Router B:0/0 *192.16.1.2/24 router B:0/1 192.168.3.1/24*I can ping the inside and outside address of both router from PCs connected at its respectable end. *PC A 192.168.2.2/24 PC B 192.168.3.2/24 *when connected to router A 0/1 and I try to ping router B 0/0 it times out in DOS* but I AM (CAN) able to ping from PC A to router B 0/0 in hyperterminal, telnet and Cisco SDM. I just CANNOT ping in DOS?
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Mar 25, 2011
I have created a site to site Ipsec vpn with a cisco 2610 and a linksys RV042. Running a show "crypto isakmp sa" command I get a qm_idle status and when running a "show crypto ipsec sa" I see that packets are being decrypted and encrypted. Also when running the "show ip access-lists" command I do have matches to that connection.The problem is that I am unable to ping hosts from one network to another. For example, from the Cisco router in network 192.168.0.0 I am unable to ping the remote network 192.168.2.0 and vice versa.
I am not sure what is happening. Do I need to create a route to that remote network? I guess it could also be a problem with NAT or an ACL.Here is what running-config shows:
crypto isakmp policy 1
encr 3des
hash md5
authentication pre-share
group 2
lifetime 28800
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Oct 26, 2012
I am connecting a 2600 router to an ISP. Interface 0/0 is connected to the ISP using DHCP. Interface 0/1 is connected to the inside providing DHCP services to the inside. At least it should only be providing DHCP services to the inside. I also have a public static IP that is NAT to a private static IP. Everything is working except the computer on the static IP. From the router I am able to ping inside and out from each interface. I am able to ping both interfaces of the router from the computer on the static IP but I cannot ping outside the router. If I do a debug all I see a reject for the gateway of the static IP but it has “mobile IP” in the text string. Not sure what mobile IP is relating to. Networks are as follows:
0/0 DHCP 10.X.X.X
0/1 192x.x.x
Static 75.X.X.X
[Code].....
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Apr 26, 2012
I have the following setup where the Cisco ME 3400 provided by the ISP.
My Cisco 2911 is configured as below:
CORE_Router#sh run
Building configuration...
Current configuration : 6075 bytes
[Code].....
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Aug 18, 2011
I've been called upon to fix the SSL VPN issues in our ASA5505. The issue I am having is that I am able to log into the vpn, access the internet, but I'm unable to access anything on the LAN. I can't use ping or use DNS.
I'm using ASDM v. 6.2(1) and ASA verison 8.2(1). I'm not comfortable using the CLI and prefer the GUI.
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Mar 9, 2011
We have many CT/MRI etc. machines and Servers in the Hospital LAN. Now intermittently we are loosing the LAN connectivity i.e we are not able to ping any system from any node inside the hospital network for sometimes, after some time it will start working and then again it will stops again.We are using procurve switches and also we are not using any router
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Sep 14, 2012
I m not able to ping from one to another with the os win XP n other with win 7.
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Jul 29, 2011
I'm trying to do port forwarding on my DIR-615...first of all I need to be able to ping the router from outside! I did enable the ping options to allow request from WAN...still don't work!!I removed the router and plug my laptop directly on my cable modem adapter and I'm able to ping my IP address (did put the same address the router had)...so, the IP is OK and it is possible to get in the modem from outside.I did plug back the router, and still not working...I did some trick like enable all IP with the Inbound filter...give access to few MAC address that I have to give more chances to get in and still not working!!!
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Sep 9, 2011
I just tried to configure my ASA but unable to ping. My setup is as follows:
Cable Modem (DHCP from IPS)---> ASA (192.168.1.1)--->Belking Router (192.168.5.1)--->Switch (192.168.5.14)--->
ASA Version 8.2(3)
!
hostname WoodHomeASA-1
[Code].....
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Oct 10, 2011
I am currently working on a 1941w router. The problem that I am having is that I am unable to ping the switch that is directly connected to it and I am unable to ping from the switch to the router. If I take the address off of vlan 1 and move it to gi0/0.1 the pings work, but then client traffic on the wireless ap inside the 1941w fails.
Here is the releveant config off of the 1941w
version 15.0
no service pad
service timestamps debug datetime msec localtime show-timezone
[Code].....
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