I have a 100BaseT Ethernet Router to Ethernet Router link over several miles of fiber using TCP/IP with fixed IP addresses. Nothing in between except fiber and electrical to optical conversion. What test equipment is recommended to measure Bit Error Rate from Ethernet port on one end to Ethernet Port on the other end? Im used to using paired PRBS generator/receiver gear to measure BER on serial links (such as Fireberd 6000a), but how is this done on a packet based link? Is there other equipment that might provide BER or other measurements of link quality for this point to point link? Any thoughts appreciated. Thanks!