12-14-2016 08:37 PM
Please advise is it necessary to purchase "BR-3900TRK-02(Trunking feature license)" and "BR-3900EXF-02(Extended Fabric feature" if the total distance between 2 x 6510 is less than 200m through 2 x DWDM.
<--------less than 200meters---->
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12-15-2016 03:54 AM
if the physical fibre length / distance is 200 meter, then you do not need the EF (Extended Fabric license).
For distances approaching / longer than 10km (assuming normal frame size), you will need EF.
For distances up to and including 5km (still assuming normal frame size), you do not need EF since the LE mode (portcfglongdistance) is supported without EF. The LS or LD mode in portcfglongdistance requires EF.
if you want to trunk 2 or more ISLs, independent of distance (or EF), you will need the trunking licenses.
12-15-2016 04:17 AM
the total distance = 6510 to DWDM + the length of the DWDM connection + the distance from the DWDM to 6510.
You will need EF if the total distance is 10km or larger.