SiteA and Site B are connected Point-to-Point with two 1.5 Mbps T1 lines. In order to bundle the traffic into a single 3 Mbps line I have created a Multilink group and added both lines to it on the router at each site. Recently we have been having slowness on the connection where it wasn't before. I did a 'sh controller t1' command to see if there were errors and the first one I did (0/2/0) was fin and showed everything fine but the second line (0/2/1) has a bunch of errors:
SiteAGW#sh controller t1 0/2/1
T1 0/2/1 is up.
Applique type is Channelized T1
Cablelength is long gain36 0db
No alarms detected.
alarm-trigger is not set
Soaking time: 3, Clearance time: 10
AIS State:Clear LOS State:Clear LOF State:Clear
Version info Firmware: 20070320, FPGA: 20, 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 (461 seconds elapsed):
0 Line Code Violations, 0 Path Code Violations
461 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
461 Errored Secs, 0 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Data in Interval 1:
0 Line Code Violations, 1371 Path Code Violations
897 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
895 Errored Secs, 0 Bursty Err Secs, 2 Severely Err Secs, 0 Unavail Secs
Data in Interval 2:
0 Line Code Violations, 2800 Path Code Violations
895 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
889 Errored Secs, 0 Bursty Err Secs, 8 Severely Err Secs, 0 Unavail Secs
Data in Interval 3:
0 Line Code Violations, 2854 Path Code Violations
890 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 0 Degraded Mins
885 Errored Secs, 0 Bursty Err Secs, 8 Severely Err Secs, 0 Unavail Secs
I logged onto SiteB's router and found the same thing. The first T1 I looked at (0/0/0) was fine but the second one (0/0/1) had a bunch of errors:
SiteBGW#sh controller t1 0/0/1
T1 0/0/1 is up.
Applique type is Channelized T1
Cablelength is long 0db
No alarms detected.
alarm-trigger is not set
Soaking time: 3, Clearance time: 10
AIS State:Clear LOS State:Clear LOF State:Clear
Version info Firmware: 20071011, 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 (559 seconds elapsed):
0 Line Code Violations, 57140 Path Code Violations
556 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 10 Degraded Mins
559 Errored Secs, 559 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Data in Interval 1:
0 Line Code Violations, 88777 Path Code Violations
900 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 15 Degraded Mins
900 Errored Secs, 900 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Data in Interval 2:
0 Line Code Violations, 94691 Path Code Violations
895 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 15 Degraded Mins
900 Errored Secs, 900 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Data in Interval 3:
0 Line Code Violations, 88393 Path Code Violations
894 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 15 Degraded Mins
900 Errored Secs, 900 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Data in Interval 4:
0 Line Code Violations, 80340 Path Code Violations
897 Slip Secs, 0 Fr Loss Secs, 0 Line Err Secs, 15 Degraded Mins
900 Errored Secs, 900 Bursty Err Secs, 0 Severely Err Secs, 0 Unavail Secs
Could this be causing our connection issues? What could be causing just one of the lines on the Multilink team to do this and how do I fix it?
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