Cisco 1721 router serial port not showing any loop.
Sir...i have cisco 1721 router. i have connected serial 0 port to 64 kbps modem and serial 1 to another 64 kbps modem.now both modems are connected back to back by 4 wire...but the serial ports are showing "serial up,line protocol down". and it is not showing any loop given from modem..configurations are correct modem also fine.router also showing serials ports connecting LED.....so where is the problem...
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Re: cisco 1721 router serial port not showing any loop.
The problem is with your modem....did you tested the local loop from router to modem....are u getting local loop from one modem till router or not...try first checking local loop from modem to router...
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Connect your computer directly to the Internet modem and make sure that you have Internet access directly from the modem.
If that is working properly then connect the modem to the Internet port on the router. Connect the computer to port 1 on the router.
Reset the router and configure it manually.
If your computer shows you the little yellow triangle (limited connectivity) then you might have to reset the source of your internet, the modem if you can access it, by unplugging the power for 30 seconds. then reset your router by unplugging the power for 30 seconds so it can aquire a new IP address if you get the internet through dynamic settings. The router could also have a bad ethernet internet port. If you can connect to the router wirelessly and tried resetting it and if you can get internet being directly hooked up to the modem or source of internet such as a wall outlet...then your router may be bad.....if it is a Belkin...then it was junk to begin with.
That is connect. You will need to connect the router to the modem with the Ethernet cable.
First connect the computer to the modem with the Ethernet cable. Make sure that you can access Internet without router.
Connect the computer to the Ethernet port 1 and modem to the Internet port on Linksys router. Open the setup page of the router. Change the Internet connection settings according to the Internet service provider. Create a wireless network and then connect your computer and other devices to the wireless network.
I think you mean hyperterminal? you need a cisco serial cable (blue) and a serial port on your PC, maybe a USB to serial adapter if there isn't one. Set hyperterminal to use the COM port you have plugged in to, speed 9600 8 bit no parity. (8N1).
Without the serial cable you need to know the router IP and password.
1: Would a Cisco 1720 provide a simple soltution for terminating a T1 to
Ethernet 100 Mps
I recommend a 1721
2: If this would not be an option, what Cisco box would provide the needed
I recommend a 1721
3: If a Cisco device could do this would it be necessary to replace them at
both locations or could it communicate with the Adtran device.
It depends on the topology of how your sites are interconnected to each
other. Please describe in greater detail.