Communication link failure

I am running an SSIS packsge across 2 servers. There at 33 Mil rows being copied over. At 5.6 mil rows I get this

[OLE DB Source [1]] Error: An OLE DB error has occurred. Error code: 0x80004005. An OLE DB record is available.Source: "Microsoft SQL Native Client"Hresult: 0x80004005Description: "Protocol error in TDS stream". An OLE DB record is available.Source: "Microsoft SQL Native Client"Hresult: 0x80004005Description: "Communication link failure". An OLE DB record is available.Source: "Microsoft SQL Native Client"Hresult: 0x80004005Description: "TCP Provider: An existing connection was forcibly closed by the remote host. ". An OLE DB record is available.Source: "Microsoft SQL Native Client"Hresult: 0x80004005Description: "Communication link failure". An OLE DB record is available.Source: "Microsoft SQL Native Client"Hresult: 0x80004005Description: "TCP Provider: An existing connection was forcibly closed by the remote host. ". An OLE DB record is available.Source: "Microsoft SQL Native Client"Hresult: 0x80004005Description: "Communication link failure". An OLE DB record is available.Source: "Microsoft SQL Native Client"Hresult: 0x80004005Description: "TCP Provider: The specified network name is no longer available. ".

[DTS.Pipeline] Error: The PrimeOutput method on component "OLE DB Source" (1) returned error code 0xC0202009. The component returned a failure code when the pipeline engine called PrimeOutput(). The meaning of the failure code is defined by the component, but the error is fatal and the pipeline stopped executing.

Is there any known cause of this?

Thanks

Looks like a connection problem and that something, somewhere starts to drop packets or even the connection. You might have to enlist the help of the network guys if such people exist where you're at.