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Why Are Packets Dropped on a PVC Between a J-series Device and Another Vendor?

Problem—I configured a permanent virtual circuit (PVC) between T1, E1, T3, or E3 interfaces on my Juniper Networks device and another vendor's device, and packets are being dropped and ping fails.

Solution—If the other vendor's device does not have the same FRF.12 support as the J-series device or supports FRF.12 in a different way, the J-series interface on the PVC might discard a fragmented packet containing FRF.12 headers and count it as a "Policed Discard." As a workaround for this problem, configure multilink bundles on both peers, and configure fragmentation thresholds on the multilink bundles.

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