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Setting Up A Lab Question 1

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BudT

IS-IT--Management
Nov 14, 2000
87
US
I am trying to set up a lab using two Cisco 2500 routers and two Astrocom SP100 CSUs. Can I simply use a cross-over cable between the CSU's and set internal timing to get them to communicate with each other? I've tried doing it this way but the serial line is up and protocol is down. I am using encapsulation of HDLC.
 
You can use a crossover cable between the two CSU's. The pinout for T-1 is 1,2,4 and 5. 1 should go to 4 and 2 should go to 5. As far as timing for the T-1, make sure one is providing clocking and the other is clocking from the line. I used to do this before I got my DTE/DCE cables for my lab.

It doesn't matter what encapsulation you use on the routers as long it matches on both routers.

HTH,
Nick
 
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