I have replaced ADC Kentrex box with NM-1T3/E3 (the box has failed). After configuring the serial interface, I see the line up and the protocol up but I can't ping Sprint's router as well as they can't ping my router. Sprint is not very helpful because this is not their managed equipment. Any suggestions?
My first thought would be to verify that the address that you have configued is completely correct.
The fact that the line is up and the line protocol is up is a good sign and indicates that the line parameters match up with Sprint ok. Do you have CDP enabled? If so do you get any information from show cdp neighbor detail (which if it gives you response data will verify the IP address of the peer).
I am not familiar with the dsu mode command and the significance of setting it to 1. Have tested the effect of removing it or of configuring it to some other value?
This document gives several answers on frequently asked questions for PFRv3 channel state behavior.
Q1: What are all the channel operational states from a BR (border role) perspective and what are the rules/conditions to be in each st...
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