An optical network, which includes edge and switching nodes, optically
communicate information formatted into statistically multiplexed control
and data bursts and/or metadata that are framed within Wide Area Network
Interface Sublayer (WIS) frames for 10 Gb/s Ethernet according to the
IEEE 802.3ae Standard. Frames with control bursts are transmitted prior
to frames with related data bursts to configure optical switches in
selected switching nodes so that the frames with the data bursts do not
require O-E-O conversion. Another optical network uses frames that are
data-rate and format compatible with the OC-192 synchronous optical
network (SONET) transmission format. The ingress node to the optical
network inserts the MAC address of the egress node rather than the IP
address of the data destination. For both networks, mapping table
information is exchanged in the optical network in an out-of-band
network.