Cisco WAN :: Connecting Two 1841 Routers Together
Feb 6, 2011
For educational reasons (a Videoconference class), I need to connect two 1841 router with each other. They both have HWIC-2T modules, but it's almost impossible for me to have the CAB-SS-2626X Smart Serial crossover cable on time. So, I was wondering if there will be some kind of a problem if I connect them through a UTP crossover cable using their FastEthernet interfaces. I suppose it will not "simulate" a serial wan connection but, would it work as a router to router connection?
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Oct 22, 2012
While I managed to connect to each router individually, I decided it was time to connect the routers together via serial; as I don't have any serial cables and need to buy some, what serial cables I need, as well as to ask whether I have the right cards in my router(s) that will allow me to do so.
I bought 3 1841 routers, and all have a 1 port serial WAN Interface Card (WIC 1-T); one router has 2 of these, and one router has a WIC-1B-S/T .. My question is, can I connect the routers with a serial cable via WIC 1-T, or do I need a 2-T
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Mar 11, 2013
I have a Hwic 3G-GSM module in an 1841 router. The sim card in the module is configured on an APN no username and password. I have checked all the config from a working router 1841 plus the same module and same vendor Sim card on the APN and all is working. I have configured the second router but it doesn't want to connect at all. If i put the Sim card in a standard 3G modem life is good, and I can connect to the APN and get the static IP address. When I'm trying to initiate the connection from the 1841 the Sim card wont connect.
My config to debug:
sh ip int brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0/0 10.20.20.1 YES NVRAM up up
FastEthernet0/1 unassigned YES NVRAM up up
Cellular0/1/0 unassigned YES NVRAM up up
NVI0 10.20.20.1 YES unset up up
[ code] ...........
I'm not sure if the cellular card is calling the wrong script (d0efault-d0ials0crip) instead of the gsm one configured.
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Jul 21, 2012
As a Cisco newbie I am thinking about building a linux router (for a study project) to connect to a Cisco network (2 x 1841 routers). what kind (standard) of serial interface card will I need to install on the Linux PC router to enable serial communications with the other two 1841s.
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Jan 10, 2013
Here's my setup:
- Cisco 1841 connected to the internet on fa0/1
- LAN connected to fa0/0/1 (switch port, connected to Vlan1)
On my LAN I have a web server that houses different websites. Those websites have DNS records that point to my public IP address, located on fa0/1. From the outside I can reach the websites perfectly, but I can't reach them from the inside. So it looks like I can't seem to connect from my local LAN address to the public ip address on the Cisco (who then should NAT it to the correct server)
Here is a snippet from my config:
--NAT--
ip nat inside source static tcp 192.168.0.3 80 interface FastEthernet0/1 80
ip nat inside source route-map Internet interface FastEthernet0/1 overload
--OUTSIDE INTERFACE--
interface FastEthernet0/1
description WAN
ip address dhcp
ip access-group WAN-IN in
[ code]...
--INSIDE INTERFACE--
interface Vlan1
description LAN
ip address 192.168.0.254 255.255.255.0
ip access-group LAN-IN in
[Code]....
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Feb 12, 2012
I'm trying to configure an IPSEC VPN + tunnel for multicast data. When the default gateway is set on the router (1841) it works fine but if I only set a route to the IPSEC peer via our gateway then the tunnel fails to come up. The end point is to a 3rd party. [code]
I found that if I add a static route for the tunnel destination via fa0/0, the public facing interface, the tunnel comes up..ip route 10.23.4.2 255. 255. 255. 255 FastEthernet0/0
and I can then ping the tunnel IP at the far end - 10.23.0.5.Why would that be? Is there a better way to do this without using a default route??
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Oct 15, 2012
I am having two routers of 1841 series.In router 1 I am connected with my Cloud Network and in router 2 I am connected for internet.
I need both the wan connectivities to be advertise in my network for my LAN which is configured with DHCP in my ROUTER 1
Now should I connect this both routers in one switch but I'm having 2960 switch :-(
what should I configure Policy base routing or static route.
Router 1
int f0/0
ip add 10.x.x.x 255.255.255.0
[Code].....
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Aug 30, 2012
I'm trying to do vpn between two routers. The first router model 1841. Dial settings is like this:
crypto isakmp policy 1
encr aes
authentication pre-share
group 2
[Code]....
My other is model c850
crypto isakmp key 6 cisco address 82.80.137.216
crypto ipsec transform-set yoni_to_hakim esp-aes esp-sha-hmac
crypto map yoni_to_hakim 10 ipsec-isakmp
set peer 82.80.137.216
[Code]....
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Jul 26, 2011
We are running DHCP Server on our cisco 1841 routers with 12.4 IOS. We want to maintian a Database of all the DHCP IP Leases by the server (ie router), the time and date of lease all the information in a Central / Branch Database.
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Aug 20, 2012
I am looking to setup a solution for backing up a Metro Ethernet connection on a 2951 using an 1841 and 2 T1's in a Multilink. The Metro E will be primary, and if the BGP peer goes down, I want it to switchover to the 1841. Can it be done and is there an example of the BGP setup to work off of?
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Apr 28, 2009
This is only a small portion of our network but my question is, can these 1841 routers handle a 45Meg connection? I thought these routers were designed for T1/E1 type speeds. I know I saw a router performance document somewhere that showed 1841's could handle 38.4MB of traffic and that is only with routing turned on. If anything else is enabled, like access lists, NetFlow or whatever, that number will decrease because of the capacity of the router. Am I correct in these statements? Any document or anything else that shows performance of these routers?
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Jun 3, 2013
I have two 1841's, setting up a Lab WAN in Packet Tracer. I have one of the 1841's run to a DSL modem, then out to the cloud and the same setup on the other end... from the cloud to the DSL modem and to the 1841 on that end... I have all green lights, so that tells me layer 2 is up, but I'm trying to figure out
what IP to assign the routers to test pinging and getting traffic flowing. but the DSL Modem's have the public IP's and dynamically assign an IP to the routers? I've also tried setting up a static IP on the routers fa0/0 interfaces and the pings fail.. Wondering what I am missing to get these two talking.
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Dec 29, 2012
I have two matching N300 Belkin routers. The cable modem feeds into modem1 and modem1 feeds into modem2. I get a good wireless connection on modem1. Modem2 shows up on a wireless scan and it accepts the password. It however will not connect.
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Apr 2, 2009
I have 1841, 2800 and 3800 routers and need to do IOS upgrade to all of them. Existing routers do not have enough flash to hold 2 IOS images.if the router has 12.4.13r ROM IOS, will I be able to boot the ISR router via Cisco brand USB? That means in case something goes wrong while I am uploading new IOS to the router via WAN and something wrong, now router in ROMMON mode. If a local site person has a Cisco USB with an IOS in it, can he just stick it to the router and reboot the router and router will go out of rommon and go into normal mode? After it is working, then I can put the running IOS onto the exisitng CF card so now I can remove the USB and the CF card has a good IOS and reboot the router again.I am just trying to find a safe way to upgrade the site when they don't have big enough flash to hold 2 IOS at the same time. The local person is not technical so asking him to setup tftp server and put the IOS in the computer and so I can do tftpdnld while in rommon mode to grab the IOS from his tftp will be difficult to have the local person to set it up.
If ISR can boot off of the IOS in USB only, then I assume the requiremetn is the ROM IOS needs to be 12.4.13r. Then what is a safe way to upgrade the ROM IOS to this then? I never upgrade ROM IOS before so don't know what kind of problem I may run into and whether it's higher risk to upgrade this than upgrading the regular ios? If it is, then all my routers won't have this ROM IOS version, so that means I can't use USB to boot then? Will that means I am down to tftp server option? ( I heard xmodem won't work as it will time out before the ios can load via the slow dialup link into the router to rescue it from rommon mode).
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Jun 17, 2012
I would like to set up a POTS Dial connection between 2 Cisco routers, using the modem card WIC-1AM-V2. I'd like to use this as an out-of-band connection to a remote site, if the primary internet connection fails. So, this setup will only be used in one direction, 1 router placing calls, the other one receiving calls.Here's my config of the receiving router:
chat-script dial "" ATZ AT OK "ATX3D T" ATS0=8 TIMEOUT 120 CONNECT C
interface Async0/2/0 description out of band for network no ip address encapsulation slip async mode interactive
line 0/2/0 session-timeout 5 absolute-timeout 10 script connection dial login local modem InOut transport input all escape-character BREAK autoselect ppp stopbits 1 speed 115200 flowcontrol hardware
[code]....
This config is working fine, when dialing in via a Windows Hyperterminal Dial connection. After a while of dialing I get the login prompt of the router.Now I want to have a router placing calls instead of a Windows Server. I can't figure out how to tell a router to place calls to a POTS phone number.
Receiving router: 2811, WIC-1AM-V2, IOS c2800nm-ipbasek9-mz.124-25a
Calling router: 1841, WIC-1AM-V2, IOS c1841-advsecurityk9-mz.124-25a
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Feb 4, 2011
I have a Cisco 1841 router with the followingSerial T1 connection Fastethernet 1 with network address 192.168.0.1 Fastethernet 2 with network address 198.168.0.1I want to isolate Fastethernet 2 so that it cannot access the internet or the 192.168.0.1 network. Only incoming request is available.
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Apr 26, 2013
I have 2 Cisco routers , 1841 and 2811 , I need to setup site to site VPN , but i dont now some how it just does not seems to be working ,
Find attached the Configuration along with the
<----- 172.31.1.0/24----- DG:172.31.1.1>Cisco 2811<Dialer1 -----//Internet//----------Dialer1>Cisco1841---< DG:10.236.5.254-------------- 10.236.5.0/24--->
Find attached command executed on each router in the below order
1) show ver
2) Show run
3) show logging
4) show crypto ipsec sa
5) show crypto isakmp sa
Debugging enabled on routers are
1)Debug Crypto Isakmp
2) Debug Crypto Ipsec.
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Aug 18, 2012
I have moved my internet fro sky to virgin i still have my old router is it possible to connect them together so i get a better signal around my home.
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Oct 15, 2011
I'm having a heck of a time connecting the WRVS4400N VPN to another WRVS4400N VPN. both of the routers have the current firmware version V2.0.2.1: Router 1 is below, and router 2 has the matching configuration with as it should be the local group being that routers local information and the remote crew set up being router ones information. the status is up on both of the routers, but I'm unable to ping the remote gateway or any device behind it.[code]
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Sep 28, 2012
I'm tryig to put a computer into the DMZ and then access it from computers on the LAN using a local IP address. My reason for doing this is that I'd like my DMZ computer to be a locked down web server (just ports 80 and 443 open to the outside), but I need to be able to have more access to it from inside my LAN (e.g. I want to be able to SSH into it from the LAN).
Thus far I've been able to get a computer set up in the DMZ and can access the Internet from the DMZ computer. And I can access the DMZ computer from the LAN computers using the public address for the DMZ computer. But I can't access the DMZ computer from the LAN computers using a private address for the DMZ computer. see the attached file for a diagram of our current settings. A few descriptions:
- Verizon provides us with a number of static IP addresses, i.e. 71.123.123.10-12 (note these aren't actually the addresses, but representative).
-- In the RV042, I have the following configurations made:
- Setup > Network > LAN Setting
- Device IP Address = 10.4.20.1
[Code]......
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Sep 15, 2011
I've put in an SRP-527W for a client and got it working fine. However, it's not connecting using the 5 static IP addresses BT gave me. Where do i input the 5 static IP's on the router that it should connect using?
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Feb 18, 2013
I am located in UK which uses PPoA for ADSL broadband. I use a DrayTek Vigor120 ADSL2 Modem to act as an ADSL bridge and PPoA to PPPoE converter. This passes the ADSL authentication requirement (and subsequent single static IP address) to the Cisco Small Business RV180W sitting behind the Draytek. However, the RV180 (Firmware Version 1.0.0.30) cannot form the PPPoE connection. I have tested the modem, adsl username and password by creating a PPPoE interface on my computer and connecting this directly to the Draytek modem. The computer receives the expected IP address and I can ping remote public IPs. I have entered the username and password into the PPPoE profile,
Authentication type: CHAP (confirmed by ISP but I have also tried all other options just in case).
Connection Type: Keep Connected.
MTU Size: 1400 (also tried default, which worked OK on computer interface).
MAC Address Source: Use Default (I have successfully used combined modem/router so a "fixed" MAC address is not required).
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Jan 12, 2012
i have a demroom set up which includes a sr520 as the edge router connecting to the ISP and i have a uc 560 connected to that which is working fine i also have a new business edition 3000 and a 800 series router which im looking to connect to the sr 520 for access to the ISP as the 800 series doesn't have a ADSL line on it .i have given the 800 series routers wan interface a static address of 192.168.75.14 wich is from the address range in the sr520s default vlan and excluded the address from the DHCP pool. now from the ccp express on the 800 s i can ping the wan port of the 800 s and the default vlan/gateway of the sr520 and the wan ip of the sr520 but no further also once i try pinging it from the cmd on windows i cant ping any further that the wan interface on the 800 s .
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Aug 14, 2011
I have a WRV210 Router which I am trying to use VPN remotely to work on my home files while away. I have been able to connect to the router but cannot see any lan network. I have three desktop CPU's 1 W7 and two XP pro operating systems. The one DT I tried stopping fire wall - no lan. I set up an exception in the firewall. I have tried to get you the info thru clips and file capture of the status of the router.
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Jan 29, 2012
Connecting two wrg614 routers together. Have cable one as my provider. Both are wireless routers, however I want the second router to have only 3 pc hardwired in, no wireless.
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Mar 7, 2011
I have switch.Broadband connection i want to share it among all 5PCs.By ising ICS and switch can do it??
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Aug 12, 2011
i m trying to connect to my linksys router set through my browser. i m unable to do so. using chrome browser the site192.168.0.1 is not connecting.
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Feb 22, 2012
wireless networking in their home. Their home is built of bricks (inside walls and outside), so basically going about 10 feet around a wall will drop a wireless signal.One problem is that the router outside in the office has a separate network than the router inside of the house by the kitchen. They're both configured to use different SSIDs/encryption keys, etc, but they both are connected via ethernet cable. Problem is, moving from one side of the house, she has to switch her tablet/iPhone to the network being broadcasted by the first router, and then vice versa when going around the second wireless network.
Can I just simply configure the router inside as a wireless bridge and use the exact same SSID/encryption etc and have only one network show up regardless of which one she's closest to?I basically want to set up her network to where she just needs one wireless network, and no matter where she go in her house, she's connected to the same network (regardless of which router it's connected to), and still have internet access.
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Jan 10, 2013
I have two wireless modem/routers - a Ugo Mach5 CN458 and a Swift 4G - in two branches of my company that are distance apart and i want to connect them together so that they can be on the same network and workers in both branches can communicate and share files.
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May 17, 2012
we would like to get Internet from the new router and have it go through a second (old) router on one port and another wired connection on another port. Currently, when we connect the old router to a port, no traffic goes through and dns cannot be resolved.
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Aug 11, 2012
I have an upstairs office where my desktop pc is located. This pc is connected to the internet via a Linksys Router in my bedroom...
My XBox is downstairs and connected wirelessly to a Belkin Router downstairs. The Belkin Router is then connected to my Linksys Router to access the internet.
I can access XBox Live and the internet through both the XBox and my pc BUT the XBox doesn't see the computer on the network.. so I'm unable to stream files from my pc to the Xbox.
I'm attempting to stream movies from TVersity to my XBox but my XBox can't see my pc..
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May 2, 2012
I am on the Verizon wireless router connected to my laptop and the xbox wired to laptop. I have another wireless router that i want to connect because the main router is in the basement I am on the second floor. How do I connect the xbox to the 2nd router wired?
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Jun 16, 2011
i have two linksys wireless router on different networks that i want to connect. how do i go about it?
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