I am somewhat new to cisco IOS. We have full T1 line terminated at cisco 2620 (IOS 12.3)with the integrated CSU/DSU. It has two interfaces FastEthernet 0/0 (LAN) and Serial 0/0 (T1). At least that's what the router shows when I execute the command 'show int'.
I've been seeing a lot of frame drops in the serial0/0 interface and CRC error. Here is what my router shows (1wd4 stat):
Input queue: 0/75/0 (size/max/drops); Total output drops: 404021
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up
My ISP asked me to check the frame type and clock source. They said it should be ESF for frame and line for clock source. Looking through IOS 12.3 documentation, I see one of the controllers (either E1 or T1) has these settings. But if I execute the 'show controller e1' or 'show controller t1', I see nothing or even errors. The router goes back to command prompt as if nothing is configured for E1 or T1.
So my question is where would I go to set these configs?
We are pleased to announce availability of Beta software for 16.6.3.
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