07-02-2008 08:36 PM - edited 03-05-2019 11:58 PM
Hi,
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?
07-02-2008 11:48 PM
Hi,
Here are some possible solutions :-
1. the Earth/Neutral(ground) voltage should be less than 0.1volt
2. If its RF link, ask the provider to check the signal DB strength in ODU/IDU's.
3. Check the modem configuration properly.
4. Also check the connectors at modem end are properly punched.
I faced one incident where the link used to go down in the evening time. After somedays we figured out that it was due to signal interference from a device which was started in the evening at a Military base.
07-03-2008 12:40 AM
Hi,
Also check the WAN interface details like CRC, input/output errors..
Ask your provider to perform BERT test.
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