Cisco WAN :: 871w Cannot Ping Website On Internet
Jan 15, 2013
I have a cisco 871w router that I'm trying to incorporate into an existing network. I have FastEthernet4 (WAN port) plugged into an ISP device, which I don't have access to. I have the address set to use dhcp, which is successfully recognized and I see that the interface gets a valid ip address that I can ping with other computers on the same network.
Problems: I am logged into the router via the serial port and I cannot ping websites on the internet. I am able to ping sites that are hosted inside the WAN, but when I try "google.com" for instance, I see it sending out packets, but none are received. It resolves the hostname from the local DNS server, but there are no packets received.
I type into the console to set up the router. I'm missing a lot of stuff. This is what I've been able to piece together using google and the software manuals:
enable
config t
hostname [hostname]
interface FastEthernet 4
[Code].....
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Jul 23, 2012
I am new to Cisco and am studying for my CCENT certification. At the moment, I am attempting to correctly configure a Cisco 871W lab router. Since I have undertaken this task, I have run into nothing but problems. First off it was finding that the previous owner had left a password on it, having to purchase a new USB to DB9 adapter to pass the "break" sequence to the router, and then resetting the router in ROM Monitor mode.
Now, I cannot seem to configure the router correctly, and am quite stumped.
My ISP is Charter (cable internet), and the home network that I am using consists of a Motorola SBV5122 Digital Voice Modem, Motorola SB6120 Cable modem, and, ideally, should also include my Cisco 871W router.
When I connect my router to the SB6120 Cable modem, the router receives an IP address via DHCP and the WAN indicator light turns on.
I have a VLAN configured on the 4 switchports of the router, and it is setep to act as a DHCP server. However, when I connect my PC to rhe router via Cat5e Crossover cable, I cannot access the internet. The router gives the PC an IP address, yet all attempts to ping the PC from the router fail. Somehow, I can connect to the router via SSH though.
Furthermore, I can ping the 127.0.0.1 loopback address from my PC, but cannot do so from the router.
how to correctly configure this router to function as intended in my network situation, however, this is proving to be seemingly unsurmountable!
I have attached the config of my router along with both outputs and commands relating to my predicament.
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Apr 14, 2011
We have a Cisco 871W working as PIX, controlling external VPN connections to our private network.The configuration is very similar to the one described here - "Cisco Router as a Remote VPN Server using SDM Configuration Example" url...
About once a week, it stops working, without aparent external intervention.The ping to the external IP stops answering, and the internal IP stops answering pings also.The solution is power-off and power-on, and it starts working again ...
What is the correct way to debug this situation ?I can connect a HyperTerminal using direct cable to the 871, but dont know the relevant commands to debug this situation.
Is there any LOG I can have a look into ? Yes, I am quite new to Cisco world .By the way : "show version" says Cisco IOS Software, C870 Software (C870-ADVSECURITYK9-M), Version 12.4(15)T7, RELEASE SOFTWARE (fc3)
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Jul 28, 2012
I have an 871 set up at home with 2 VLANs, both of these vlans present a strange behavior where an user is unable to ping/contact another user on the same subnet, however if users are on different subnet it seems to work [code]
According to the troubleshooting that I have done, the issue seems to be with the broadcast traffic, ARP request/reply do not reach another host on the same subnet (wireless to wireless or wired to wireless) however if the wireless device iniciates the connection to wired, it works fine.
I have tried to enable proxy arp on the different VLANs and BVI and different combinations but no sucess in order to get traffic across 2 wireless devices on the same subnet or a connection that is iniciated for a wired client to a wireless one.
I tried enabling and disabling dot11 arp-cache but no luck.
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Sep 20, 2011
About twice a day (that I notice) my wireless loses its internet connection. All the wired machines continue to be connected to the internet but any wireless ones lose internet, though they maintain a connection with the router.
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May 5, 2013
I've just started styding for CCNA. Bought a router 871W recently and spent two days straight trying to configure internet connection with no luck! I use console port to do the configs and SDM/CCP. How to do simple internet connection configs. I googled everything but it's still confusing. I can't assing any IP to FA ports 0 - 3. I used VLAN instead. But all tutorials use FA0 and when I try to assign an IP to FA0 it gives me some L2 can't be assigned or something... :/ And I'm also confused what IP address should I use for WAN. I plugged the cable from Modem to PC's LAN port and wrote down some IP addresses which I think I'll have to use to configure the router for internet connection. And here they are:
ISP IP: 76.114.54.255
SUBNET: 255.255.248.0
GATEWAY: 76.114.48.1
DHCP: 69.252.97.4
DNS: 75.75.75.75
75.75.76.76
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Aug 9, 2012
I have Latitude E6410 and connect to internet through wireless network to Zyxel ADSL modem. My problem has started 20 days ago when I was connected then I was disconnected from internet. The status is as below:
- I can ping the modem which means the laptop the link between modem and laptop is working while I can not ping any address or website even the provider's DNS. At the same time, if I connect the LAN cable, every thing is working properly. I tried with different laptops and there was no problem. To resolve the problem temporarily, I have to restart the modem or change the IP for my wireless card. In this case it works for another 30-60 minutes. the issue is the same when I use different modem.
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Mar 8, 2011
I have a Cisco 871w that has been a very great product for many years. I recently switched to Windows 7 x64 on my main machine and now i am having all sorts of issues with it.. I have done a bit of research and found that it appears that it might be the firewall on the SDM that is causing the slowness issues. what does happen is that downloads from known good sites will run really slow. If i hook up my Macbook Pro or my Windows XP laptop i have no issues at all. i have tried Disabling IPv6 as well as SMB2.0 and this has not resulted in a fix at this point.
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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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Mar 16, 2011
my internet doesnt allow access to thepiratebay.org. Why?
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Oct 23, 2011
My children are enrolled in an online school. Is there a way to restrict access to allow access to the school site only with the option to toggle this on and off?
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Jan 4, 2013
I am a bit green with IOS and have exhausted everything I can think of with this. The router passes the WAN test in CCP?Undoubtedly there are probably a few things in the config that are either redundant or totally unnecessary, but I have been trying a few things to solve this with very little success.I have no security stuff in here because I have triewd to keep the config as simple as possible to start with. I will add that after I get the routing working.
Here is my most recent config:
Cisco871W#show config
Using 2631 out of 131072 bytes
!
version 12.4
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
[codde].....
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Mar 12, 2013
everytime i try to get into my hotmail account i get a sign to say internet explorer has blocked this website with security certificate errors, what can i do ?
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Mar 26, 2012
I am designing a network internet connection to our 20 apartment block. The WAN is Ultima up to 40mb/s and the take up is expected to be modest in terms of throughput. However I have been told that two apartments want to run their own non commercial web sites which currently operate on adsl with ddns provision from TZO. The netgear vdsl router supplied by the ISP will obviously have port forwarding but how do I cater for more than one LAN destination requiring port 80 traffic??Surely I dont have to have an in-block DNS.
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Jul 2, 2011
I recently put my PC back to factory settings, however the Linksys wireless thing I'm using that's installed in my PC no longer works. I know how to install it, I just need to install drivers first, however I've got.Is no internet connection to my PC to go to the website and install these drivers there a way you can install them on 1 PC, then transfer them onto another?
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Jun 1, 2012
I have created a virtual server that hosts a ticketing website on it, locally i can access the website when i input my private ip .
Now i want to make it accessible to the agents outside my company , i have change my private ip to a public one, but the problem is still there,i cant connect . i disabled the firewall , just so i would be sure its aint a F.W problem and still , not working .
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Aug 9, 2011
I bought an 871w second hand with 124-24T IOS on it. I would like to enable QoS. When I use Cisco Configuration Professional to manage the router I click on QoS and it says it is not available. I know that the router itself is QoS capable.
This is my first time dealing with a router such as this and I wonder what I need to do to enable QoS.
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Sep 18, 2011
I want to upgrade my IOS on an 871W. In order to do this I need to upgrade the memory. I have found that I need the MEM870-32F (Am I correct?).
As in here: {URL}. So if I follow these instructions: {URL}. Is that all there is to it?
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Jun 6, 2012
I have a Cisco 871 router at one of my client sites.(they purchased the router from me and I sent them the router with a basic configuration on it). When they connect it after hours clients get the proper IP addresses and dhcp configuration however are unable to access the internet.We are connecting their ISP supplied router to Gigabitethernet0. They have a static address. I have been through the confirmation many times and am thinking I am missing something so simple.
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Jan 16, 2011
As soon as I add the interfaces of the router to security zones it significantly drops speed on WAN interface, below 1 Mbs. I noted this because I wasn't able to watch youtube. Moreover the bandwidth test from speedtest.net hangs and doesn't come to a result. Here below is the diagnostic example while doing that test. The question is what is going on? I have two iPhones and three computers in my network, that's it. My ISP bandwidth is 10 Mbs, so is this the router hardware limitations, or kind of malfunction or some misconfiguration down here? What could be done here ?
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Sep 23, 2012
I have a small wireless network, which consists of three AP1121G with c1100-k9w7-mx.123-8.JEB1 ios and one 871w with c870-advipservicesk9-mz.124-24.T1. I've configured two different ssid's with individual authorisation types - ssid_1 with eap, ssid_2 with wpa. All three ap's works as it should be, but 871w authorises only eap connections, and all other types are rejected
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Jul 9, 2012
Is it possible to make Any Connect VPN from IPad/iPhone to 871w? IPSec VPN is working perfectly but cant get my Cisco AnyConnect iOS client to connect. I have config webvpn and it beeing user/pw prompted but keep getting the following error:
"the required license for this type of VPN client is not avaiable on the Secure gateway. Please contact Your network administrator".
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May 12, 2013
I'm trying to configure WiFi on my Cisco 871w router withouth any knowledge in this area. And it's a tough one, couldn't do it just with google, hope this is the place where I can get it done right step by step if possible. Everything else works fine. I'm going to post my messy show run below. Everything I did on dot11Radio will need to be cleared I suppose.
Point38#show run
Building configuration...
Current configuration : 4072 bytes
!
! Last configuration change at 16:23:18 UTC Thu Sep 8 2011
version 15.1
no service pad
[code]...
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Aug 21, 2012
Below is my VPN config in my 871 and radius user config. I am unable to connect to the vpn using Cisco vpn client. I am getting one of two errors depending on what config changes I make.I believe I have the radius configured correctly because it is authentication but not 100% sure.
[code]...
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Oct 10, 2012
I've acquired an 871W, because I'd like to use wireless, to replace my 851. I Ft Pd the 851's configuration to my FTP server and then Ft Pd this to the 871W. Save for the fact that this has a radio interface (currently shutdown), everything works save for FTP from the outside. I can not even telnet to port 21 of any of the internal FT servers. I can telnet to any other port (ssg, smtp, HTTP, https, etc.) but FTP will not pass. What's the difference?
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Sep 30, 2011
I have an RV110W running firmware version 1.0.1.6 and I am trying to figure out how to enable website blocking in the Internet Access Policy screen. The Add Row button is grayed out in that section, as are the associated checkboxes.
Is there something else one needs to do to enable this feature?
If I set a name etc. at the top, and click save, it tells me "You must at least set a website blocking or PCs rule," so it is not the case that one has to save some information before continuing!
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Jan 21, 2013
We have a network of over 20 devices, all kinds (windows, android, mac enz...). Everything was going well until one of the mac-users tried to publish his website that contained a movie (at first the movie was 622 MB). If this user presses publish the internet is going away. The website won't publish, waiting doesn't work. While the internet isn't working I went to another pc in the network and started some ping experiments. I can ping any device in the LAN, outside the LAN something strange happens: let's say for 6 seconds it is ok, but then it fails for lets say 20sec, again 6 sec the ping returns ok (45ms), and goes down for a longer period. Eventually it is not coming back.The mac user himself cannot access the internet either. When the publishing is stopped, the internet is back in less than a second.
This problem is recent, and it isn't the first time this user published a video on his own website, on the same host with the same application (iWeb). I asked him to publish his site to a local folder and hand it over to me, I tried to publish it to the same host using my own FTP application (FileZilla), this worked without any problem (I am on the same network). This is what we tried:
- Compressing the video (it is now 26 MB, still not working), we have 2GB space from the host, no limits on filesize.
- Publishing the website without the video's, no problem
- I turned on logging (debugging level) in the modem/router, no entries at the moment things went wrong...
- I called the provider, they claim nothing is wrong at their systems.
So, can the modem be broken? I don't think so because I can use it with far more intensive tasks without going down.One thing is clear, it shouldn't be possible for one computer to block the internet for everybody, so changes in the configuration are needed (I think).
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Jan 25, 2012
I have IIS running in a machine inside my network and I would like to make is visible to the world wide web.To do that, I created a website in the port 8787, which is accessible when the user types 192.168.0.126:8787 in the browser. Of course it works only when the user is inside my network.(IIS running over windows server 2008 OS)Now I want to make it visible to the WWW, so I created a rule to make a port forwarding to it:I went to: Advanced > Virtual Servers and created a rule with the given information:
enabled
Name: website
private ip: 192.168.0.126
protocol: both
private port: 8787
public port: 8787
Schedule: always
This rule created automatically a firewall rule
Enabled
Alow
Source: WAN *
Destination: LAN 192.168.0.126 Protocol: * Port range:8787
always
Unfortunately it isn't enough, if I type myPublicIp:8787 I can't access the website because I either get "connection reset" error or a timeout.I pluged my computer directly in my modem and it worked perfectly.To make a test, I tried to enable the router remote administration on the port 10001. It didn't work.ps: my wireless router is a dlink di-524, I am writing this in this forum because I couldn't find the one related to my router...
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Nov 16, 2012
I have a Dell Inspiron 2320 computer. I have only had it for 9 months and it is running extremely slow. If I click on a website, it takes forever to load up. When I get frustrated from waiting, I'll hit CTRL + ALT + DEL and go to task manager. When the task manager pops up, all of a sudden the website that I was trying to load, will finish loading. It is very annoying. The computer is only used for searching the internet, a little bit of internet banking, and a few books have been down loaded from amazon to a kindle.
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Nov 5, 2012
I have a problem with myself a few other clients randomly disconnecting from my 871W. It appears that I am still associated but Windows 7 shows "Limited Access". I appear to be assosciated to the AP and I still have my ip address but I can't ping the 192.168.1.1 gateway (871W). I have also set my power plan to allow for Maximum Performance which I thought disabled PSP but the log is still showing errors.As a final note, after I reconnected by ip address (192.168.1.107) doesn't show up in "sh ip dhcp bindings" but I'm working.To correct the situation, I have to disconnect and the reconnect to the AP and then I am good for another day or close to it. Below are the log errors, config and a sh ver. [code]
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Jul 8, 2012
Recently, I purchased a Cisco 871W Router with which to practice/study for my CCENT with. Since I have made the purchase, it has given me nothing but headaches.
I cannot access the router to configure it, as the previous owner has a password set on it to access enable mode, which he/she has forgotten.
Here is the message that I receive when I attempt to log in into the router, to access enable mode. [URL]
Apparently there is supposed to be a one-time username and password of "Cisco", but this is not the case.
I have tried to do a password recovery, following this post discussion thread: [URL]
Unfortunately, this has not worked, and I am sure that I am doing something incorrectly. I am connected to the router via console cable and have tried power cycling the router and entering the break sequence, power cycling again, and then holding the space bar down for 15 seconds. The preceding has produced no results to speak of. Following, I set my terminal emulator, Tera Term, to the baud rate of 1200, power cycled the router, and held down the space bar for 20 seconds. I then immediately set the baud rate back to 9600. Nothing occurred, once again.
Furthermore, I have followed the password recovery instructions set forth by Cisco. [URL]
Nothing has come of these methods, either, and I do not see how they would work, or even apply to my situation, as Cisco seems to imply they should, as I cannot get into enable mode, let alone privileged mode or conf t mode, as the guidelines require.
Here is some info for troubleshooting:
OS: Win 7 HP 64 bit
Terminal Emulator: Tera Term
Router is not currently connected to any sort of internet connection. Only the power cord and console cable are properly connected.
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Apr 16, 2012
I have a Cisco 871W that periodically will drop its signal. how to configure this for maximum reliability? I set it to use chanel 2462.
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Nov 7, 2012
I've a problem with my 871W. I can connect to the router by inside interfaces (LAN & WLAN) but not on WAN (Fa4). My client on the WAN is on the same subnet and I can ping 871.
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