I just turned up a 1 gig ethernet fiber connection across our state - a distance of 250 miles. Each end is terminated on a 7604 with Sup720-3B and 7600-SIP-400. The carrier says this connection goes through 2 OC48s.
With nothing loading down this new link, there is an 8ms RTT when doing pings.
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 184.108.40.206, timeout is 2 seconds:
Success rate is 100 percent (5/5), round-trip min/avg/max = 8/8/8 ms
Is this acceptible? 8ms seems high for a gig fiber link