Recently we subscribed for 6mbps line from a ISP and they have provided 4 T1 lines. The hardware we are using is a Cisco 2811 router with 2nos VWIC2-2MFT-T1/E1 - 2-Port RJ-48 Multiflex Trunk - T1/E1. I terminated the lines from ISP and also configured but the serial line itself does not comes up. I am pasting the configuration, please let me know if the configuration is okay or I need to add some more. Do help me with some troubelshooting tips as well if the configuration looks okay.
If these T1s are to produce a 6 Mbps link they obviously are to be configured as multilink. To support multilink the serial interfaces need to be configured with encapsulation ppp and configured in a multilink group, and the multilink interface needs to be configured.
The lack of encapsulation ppp would prevent the line protocol from coming up. But the lack of encapsulation would not explain the line state as being down. I would agree that show controller T1 is a good place to start troubleshooting.
show controller, show the below output. Please suggest.
T1 0/0/0 is down. Applique type is Channelized T1 Cablelength is long 0db Transmitter is sending remote alarm. Receiver has loss of signal. alarm-trigger is not set Soaking time: 3, Clearance time: 10 AIS State:Clear LOS State:Clear LOF State:Clear Version info Firmware: 20090408, FPGA: 13, spm_count = 0 Framing is ESF, Line Code is B8ZS, Clock Source is Line. CRC Threshold is 320. Reported from firmware is 320. Data in current interval (316 seconds elapsed): 0 Line Code Violations, 0 Path Code Violations 0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins 0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 316 Unavail Secs Total Data (last 24 hours) 691 Line Code Violations, 0 Path Code Violations, 0 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins, 0 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 86400 Unavail Secs
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