Hi there, I got 16 IP addresses from my ISP. I have Cisco 1720 router. The problem is that I can't ping my router. I made connection as follow: PC->3COM(some) Network Card->3COM HUB. Then from HUB -> router. I used RJ-45 connectors. But, I can't see my router. Also, I trayed to connect cable directly from PC to router but still not working. Unfortunately I don't have any knowledge about routers but I need to fix this problem. 1.Which is default IP I should ping (router)-I trayed 192.168.0.1 (my friend told me that) 2.Which is default UserName and Password on Cisco 1720 router. Thank you a lot even just for reading this. Antilon

I assume the 1720 router was part of the package from the ISP. What info did the ISP give you about the 1720? 16 IPs subnet mask ethernet IP for your network the gateway IP The default userid/pswd is sometimes cisco/cisco. If you have any of this info or can get into the router through the console port using the blue cable that should have come with the router I can probably help you.

Thank you for helping me. I got just modem from my ISP. The modem is connected between line and router. Router is our private property. The people from ISP tested modem-to-modem (ISP's modem and one of mine). It works. The lights on router sad it working properly. But, I can't ping it still. About blue cable? I don't have it. Also, I don't have any place for put some cable into router. There are just 4 places (I can put in only network cable). One of this place have sign "Console"; othe one "AUX" and finaly third has "10/100 Ethernet". There is also port for Modem (modem uses it now). I'm using Windows 98. I would like to know what should I do for testing router? Ping it? Which IP address then. I got af follow from ISP: Serial port address??? (what this means) for router 195.222.40.150 Subnet 255.255.255.252 Ethernet 80.65.65.128 255.255.255.240 ??? Note please that I can connect my router to PC only trough network cable. Thank you a lot... Antilon

Can you answer these questions: 1. what type of broadband connection do you have to the ISP? Frame relay, ISDN, T1, cable, DSL? 2. IS it a modem or csu/dsu that ISP gave you? What is the name on it and model? 3. Did you buy this router, was it configured for you? 4. There are 2 WIC slots in back of router, is there a card in one of the slots, what is the writing on it? The blue cable would plug into the port marked Console and the other end would have a 9 pin serial connection that plugs into your serial port on pc. Then you could configure the router through hyperterminal in win98. The AUX port is for other use. The 10/100 ethernet port connects to your hub using a CAT5 patch cable. Your modem connection is probably a serial port on a WIC card. From the ISP info: the serial interface IP on the router is 195.222.40.150 with subnet mask 255.255.255.252. The ISP end of the circuit has an IP of 195.222.40.149 with subnet mask of 255.255.255.252. I can ping the ISP IP. The last name in a trace route appears as PTT-BOSNIA-3-gw.customer.ALTER.NET. By the way, what area of the country are you located? The ethernet network has 16 IPs from 80.65.65.128 through 80.65.65.143. 80.65.65.128 is your network address. 80.65.65.129 through 80.65.65.142 are your host addresses which you will assign to your PCs and 1 to the ethernet interface on the router. 80.65.65.143 is your broadcast address. I understand you can only connect to router through ethernet cable, so I have the same question again, did someone configure the router for you and give you the ethernet interface IP and it's subnet mask? I am asking a lot of questions but I am trying to get a picture of your setup. Try this: connect router 10/100 ethernet port to hub. You should get a link light. Connect pc to hub also and get link light. Setup your win98 pc with IP 80.65.65.135 and subnet mask of 255.255.255.240. Now go to DOS prompt and ping IPs 80.65.65.129 through 80.65.65.134, and 80.65.65.136 through 80.65.65.142. If you get a reply from any of these IPs it will be your router ethernet interface.

Don't forget to reboot your win98 PC after changing the IP stack.