cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
259
Views
0
Helpful
1
Replies

Basic troubleshooting tips. FT1 connection 1720.

kbozung
Level 1
Level 1

Hello,

I'm troubleshooting intallation of a fractional T1 circuit. I'm working with the worst ISP on earth they have pretty much told me I'm on my own. They are refusing to help so I'm trying to do some troubleshooting to either figure out the problem or have some evidence to put it back on them. I know this is a very simple config but please look for any errors. I'm getting "Serial0 is up, line protocol is down"

I'm not very familiar with loopback testing, any tips?

version 12.2

service timestamps debug uptime

service timestamps log uptime

no service password-encryption

!

hostname TBCS-1720

!

enable password ********

!

memory-size iomem 25

ip subnet-zero

!

ip audit notify log

ip audit po max-events 100

!

!

!

interface FastEthernet0

ip address 192.168.0.5 255.255.255.0

speed auto

full-duplex

!

interface Serial0

description Fractional T1

ip address 65.***.***.185 255.255.255.248

encapsulation ppp

service-module t1 timeslots 1-6

service-module t1 remote-alarm-enable

!

router rip

version 2

network 65.0.0.0

!

ip classless

ip route 0.0.0.0 0.0.0.0 Serial0 permanent

no ip http server

!

snmp-server community public RO

snmp-server location Traverse Bay Community

snmp-server contact Kevin Bozung, Safety Net

snmp-server enable traps tty

!

line con 0

line aux 0

line vty 0

password ********

login

line vty 1 4

login

1 Reply 1

smalkeric
Level 6
Level 6

The following are some steps you can take to isolate the problem:

Perform DSU/CSU loopback tests. During local loopback, enter the show interface ser0 command. If the line protocol is shown as up, there might be a problem with the telephone company, or the remote router might be down.

Refer to the Hardware Installation Guide to confirm that your router is correctly installed, using the appropriate cables.

Connect the leased line to another port, if possible. If the connection comes up, there is a hardware failure on the Serial 0 port. Contact your Cisco reseller.

Please refer the following for more troubleshooting steps for leased line.

http://www.cisco.com/en/US/products/hw/routers/ps221/products_configuration_guide_chapter09186a008007cd3d.html

Review Cisco Networking for a $25 gift card