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2 port vwic cards have only one clock since they are both from the same provider you may try changing your E1 0/1 to clock internal and see if that helps.
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2 port vwic cards have only one clock since they are both from the same provider you may try changing your E1 0/1 to clock internal and see if that helps.

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it is already configured as internal.... 

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it is already configured as internal....


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Installed 2 port VWIC cards on cisco 3845 routers but seeing High level slip and CRCs errors on both interfaces. We have tested the circuits with our provider and could not able to find any errors on their side and we have swapped out the interface cards on boths sides but still the problem persists. 
 
Proivder does not provide the timing for these circuits (unframed E1s), so we have configured one side as internal and other as line. 
 
I just found we need to enable independent clocking on both E1s. 
 
Can anyone confirm where do I need to apply this command - on internal or Line or both? 
 
Router A: 
 
Controller E1 0/0 
Clock source Internal 
Channel-group 0 unframed 
 
controller E1 0/1 
Clock source Internal 
Channel-group 0 unframed 
 
 
 
Router B 
 
Controller E1 0/0 
Clock source line 
Channel-group 0 unframed 
 
controller E1 0/1 
Clock source line 
Channel-group 0 unframed 
 
 
 
 
 
 
 
 
 
 
 
 
&nbsp;high level slip seconds are seen cloking up regularly on E1s
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Installed 2 port VWIC cards on cisco 3845 routers but seeing High level slip and CRCs errors on both interfaces. We have tested the circuits with our provider and could not able to find any errors on their side and we have swapped out the interface cards on boths sides but still the problem persists.

Proivder does not provide the timing for these circuits (unframed E1s), so we have configured one side as internal and other as line. 

I just found we need to enable independent clocking on both E1s.

Can anyone confirm where do I need to apply this command - on internal or Line or both?

Router A:

Controller E1 0/0
Clock source Internal 
Channel-group 0 unframed

controller E1 0/1
Clock source Internal 
Channel-group 0 unframed



Router B

Controller E1 0/0
Clock source line
Channel-group 0 unframed

controller E1 0/1
Clock source line
Channel-group 0 unframed












 high level slip seconds are seen cloking up regularly on E1s

Enabling independent clock source for E1 circuits?

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