cisco 1721 router install

pts.
Tags:
Cisco
DHCP
DNS
Networking services
Our small company's new IT purchase was a Cisco 1721 router to be connected to 4 ports from our DSU/CSU T1 line. Currently we use a cable modem connection but I am trying to establish a second connection that users could take advantage of as well. My first goal is just to connect a desktop to the T1 line. I have not been able to establish communication with that 1721 router through the CISCO IOS operating system. One problem is our console cable isn't long enough. Can that be extended?

Answer Wiki

Thanks. We'll let you know when a new response is added.

I am not sure about the standards for serial cable length and Cisco equipment.

My answer may be oversimplistic, but take your router to your desk and connect the console cable. Use hyperterm in Windows to create a session to the router. There you can perform the initial configuration and also enable telnet and assign a management IP Address. Once this is done, then you can connect the epuipment to your network and then manage the switch via a telnet session.

Discuss This Question: 4  Replies

 
There was an error processing your information. Please try again later.
Thanks. We'll let you know when a new response is added.
Send me notifications when members answer or reply to this question.

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy
  • Permits
    Allright, I have connection now to the 1721 router. I had one setting to change. I keep reading about all of these ISDN and frame/relay settings for the 1721. All I want to do is convert the t-1 csu/dsu serial internet connection to an ethernet signal to be interpretted by a desktop as an internet signal. I have all kinds of IP addresses from the t-1 provider. Here is the IP information they provided me to setup our network. Serial IP Block: xxx.49.195.24/30 * Customer WAN IP: xxx.49.195.26 * WAN Subnet Mask: 255.255.255.252 * WAN Gateway Address xxx.49.195.25 Ethernet IP block: xxx.132.236.88/29 * Ethernet Gateway Address: xxx.132.236.89 * Ethernet Subnet Mask: 255.255.255.248 * Customer Ethernet IP range: xxx.132.236.90 - xxx.132.236.94 Is my next step to try and program the IP addresses in the router? The router will have two IP addresses right? One for the WIC serial card and one for the Ethernet connection?
    0 pointsBadges:
    report
  • Permits
    The 1721 settings are as follows. FastEthernet0 ip address xxx.132.236.90 Serial0 ip address yyy.49.195.26 and I have the workstation nic card programmed ip address xxx.132.236.91 Are these the right settings from what our t-1 dealer provided me? I can ping back and forth from the Fastethernet ip to the workstation nic ip. This is the only action that has shown up on the workstation nic card. Also, when I use the Show Interfaces Serial command I am getting 1500 Frame-Relay errors. Could these be why I cannot get any outside signals? I read something about enabling SCTE on our Paradyne DSU-CSU. Here is the IP information they provided me to setup our network. Serial IP Block: yyy.49.195.24/30 * Customer WAN IP: yyy.49.195.26 * WAN Subnet Mask: 255.255.255.252 * WAN Gateway Address yyy.49.195.25 Ethernet IP block: xxx.132.236.88/29 * Ethernet Gateway Address: xxx.132.236.89 * Ethernet Subnet Mask: 255.255.255.248 * Customer Ethernet IP range: xxx.132.236.90 - xxx.132.236.94 I will eventually use this connection in an ISA Server but right now am just trying to acquire the internet signal for the first time. Thanks.
    0 pointsBadges:
    report
  • Cacarlyle
    The WAN IP info is for the Serial interface on your router. The other IPs will be your pool of public IPs to be used by your hosts. The thing to do is to put a firewall appliance between that router and your LAN. This way you can assign one of the public IPs to the Ethernet interface on the router. Plug this interface into a DMZ switch, which is also where your outside interface of your firewall appliance (PIX) should go.
    0 pointsBadges:
    report
  • Siyad
    i have one eproblem on cisco1721 router presentley connected to leased line modem to connect users through remote but now the device get out the signal in each d1 day or2. if i rte connect it will work what will be the problem help me
    10 pointsBadges:
    report

Forgot Password

No problem! Submit your e-mail address below. We'll send you an e-mail containing your password.

Your password has been sent to:

To follow this tag...

There was an error processing your information. Please try again later.

REGISTER or login:

Forgot Password?
By submitting you agree to receive email from TechTarget and its partners. If you reside outside of the United States, you consent to having your personal data transferred to and processed in the United States. Privacy

Thanks! We'll email you when relevant content is added and updated.

Following