Unless properly engineered, network management of large SONET/SDH networks
can severely stress the embedded data communications network, resulting in
less responsive communication between the network manager and network eleme
nts. At worst, this stress can cause severe operations network instabilitie
s. We explore the types of demands large networks place on the SONET/SDH op
erations network, as well as ways to make the operations network more robus
t.