The Topological SNC in an NE of type FO
The situation to be solved
The FOXMAN-UN NP does not know anything about cross connections in NEs of type FO. If a Circuit that exists in the real network starts with, ends or crosses an NE of type FO, the FOXMAN-UN NP is not able to identify it because of the connectivity gap into the NE of type FO.
The user has to define a Topological Sub Network Connection (SNC)
Example:
A network is made of three FOX51x and one NE of type FO. Six 2 Mbit/s sections are connecting the four pieces of equipment as shown in next figure.
The SUBHX Circuit crossing an NE of type FO
This network contains two 64 kbit/s Circuits on SUBHs utilizing channels T1 and T17.
The FOXMAN-UN NP sees four SNCs as follows:
− 2 SNCs in London between SUBH and LOMIF;
− 2 SNCs from Liverpool (LOMIF) to Manchester (SUBHX).
Each SNC is put in a different Application with a random name.