t1 test to csu /dsu

Unanswered Question
Mar 12th, 2009
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Hi again


I need to test a T1 going from RT1 to csu/dsu.. now It shows down/down... when I had a telco tech put a hardloop on it I see up/down.. what could be the problem


the second issue that I have is that on the other end of the router I am doing the same testing RT2 with hard loopset by the telco on the other side.. RT2 is down/down.. when we put hardloop we still get down /down..



can you help isolate the issue.. on RT1 and RT2...


HERE IS THE HOW IT LAYS OUT


RT1---CSU/DSU--SMARTJACK--TELCO---SMARTJACK--CSU/DSU--RT2


Thanks

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pkurdziel Thu, 03/12/2009 - 12:54
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Telco should be isolating the issues for you.


When telco loops your equipment you should see (looped) besides the interface.


You can test your interface with a loopback plug.


Run over to your CSU/DSU and push the little loop button? Do you see a loop? Look on both sides.


You can also loop the CSU yourself.


Change your encap to HDLC so you can send pings. Can you loop your interface?


Check this document out: http://www.cisco.com/en/US/tech/tk713/tk628/technologies_tech_note09186a00800a754b.shtml

cisco steps Thu, 03/12/2009 - 13:09
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pkurdziel


Thanks for the reply


I am doing this remotely


RT1 already have 0/0 up/up

now I am working w/ 0/1:0


here is what I did

config t

router ospf 1

passive-interface 0/1:0

end

wr


config t

int s0/1:0

no encap

end

wr


so when he I do show int s0/1:0


it shows down/down



when the tech tech the loopout it show up/down


pkurdziel Thu, 03/12/2009 - 15:31
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It looks like you have an internal controller.

When telco has a loop up check to see if they put it in the wrong place. Do a show controller t1 0/1.

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