The ForwardBufferMemory property indicates how much memory IP allocates to store packet data in the router packet queue. ...

The ForwardBufferMemory property indicates how much memory IP allocates to store packet data in the router packet queue. When this buffer space is filled, the router begins discarding packets at random from its queue. Packet queue data buffers are 256 bytes in length, so the value of this parameter should be a multiple of 256. Multiple buffers are chained together for larger packets. The IP header for a packet is stored separately. This parameter is ignored and no buffers are allocated if the IP router is not enabled. The buffer size can range from the network MTU to the a value smaller than 0xFFFFFFFF. Default: 74240 (fifty 1480-byte packets, rounded to a multiple of 256).