Want to protect your cyber security and still get fast solutions? Ask a secure question today.Go Premium

x
  • Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 551
  • Last Modified:

AT&T T1 Installation Line down, it seems

Hello there.

Could somebody tell me if this is a problem that AT&T has to fix or do I really don't know what I am doing?

When I connect the Router (Cisco 1841) to the Demarc I can see the activity on both ends but when trying to start configuring the office's network, I get no access to the Internet. On the router I see:



MISWAL01#
MISWAL01#sh ip int brief
Interface                  IP-Address      OK? Method Status                Protocol
FastEthernet0/0            10.10.10.10     YES TFTP   administratively down down
FastEthernet0/1            unassigned      YES TFTP   administratively down down
Serial0/0/0                12.*.*.246   YES TFTP   up                    up  
MISWAL01#ping
*Sep 27 22:05:52.423: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to
MISWAL01#
MISWAL01#
MISWAL01#
MISWAL01#ping 12.*.*.245

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 12.*.*.245, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
MISWAL01#
*Sep 27 22:06:30.823: %LINK-3-UPDOWN: Interface Serial0/0/0, changed state to down
MISWAL01#
MISWAL01#
MISWAL01#
*Sep 27 22:06:53.099: %LINK-3-UPDOWN: Interface Serial0/0/0, changed state to up
*Sep 27 22:06:54.099: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to upping 12.*.*.245

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 12.*.*.245, timeout is 2 seconds:
.....
Success rate is 0 percent (0/5)
MISWAL01#
*Sep 27 22:07:22.423: %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0/0/0, changed state to down
MISWAL01#


Is this a line down?

Also, Is it a must to connect the US Robotics modem that send attached with the router?  If yes, how?

After all is working, I am adding a small Netgear switch.  Schematics and pics are a plus!

Thank you in advance!
0
IDMA
Asked:
IDMA
  • 4
  • 2
2 Solutions
 
eeRootCommented:
Sounds like this router's uplink is not configured.  What type of connection is AT&T providing?  DSL, T1, MPLS, etc?  Did AT&T provide any info on the connection's settings?  IP address, DHCP available, etc.  And which port on the router is the AT&T connection plugged into?
0
 
IDMAAuthor Commented:
The connection is a T1

We were provided the WAN Link IP Address, AR Serial INT IP Address, CR Serial INT IP Address and the WAN Link SUbnet Mask.

The port that it connectes to in the router is F0/0

We noticed that our side interface counters keeps the keepalives in count, and the Carried Detect (CD) led is steady green. During the up/up status we try pinging to the wan side of the serial line without success.
0
 
eeRootCommented:
Can you post a sanitized config from you 1841?
0
Free learning courses: Active Directory Deep Dive

Get a firm grasp on your IT environment when you learn Active Directory best practices with Veeam! Watch all, or choose any amount, of this three-part webinar series to improve your skills. From the basics to virtualization and backup, we got you covered.

 
IDMAAuthor Commented:
All fixed now.  After 4 days of re-scheduling from wonderful AT&T, the tech realized that they shipped the router without the encapsulation (PPP) configured.  Go figure...

Thanks, eeRoot for the attention.

IDMA.
0
 
IDMAAuthor Commented:
It pointed me into the right direction in order to resolve the issue.
0
 
IDMAAuthor Commented:
Thank you!
0

Featured Post

Get expert help—faster!

Need expert help—fast? Use the Help Bell for personalized assistance getting answers to your important questions.

  • 4
  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now