I am going to install a new cisco 2821 Router in a educational institution.
I am 4 e1 ports installed and will get 8 mbps from service provider.When i am connecting to the remote site (Service Provider Network) then my e1 ports frequently gets up and down status of my e1 ports very frquently ( i seen the status through show ip int brief commands).Wireless media is also checked and there is no problem with the media. I have taken the same router to other network (my service provider) it was working perfect there. Now Service Provider is saying to provide proper earth/ ground to the router (Although i have already provided it). Please tell me what would be problem. and Also tell me how much earth/ ground (in ohms) should i provide to Router.
Is it possible that router ceate such problem if i dont provide proper earth?