CHAPTER
15-1
Cisco ONS 15454 DWDM Reference Manual, R8.5
78-18343-02
15
Management Network Connectivity
This chapter provides an overview of ONS 15454 data communications network (DCN) connectivity.
Cisco Optical Networking System (ONS) network communication is based on IP, including
communication between Cisco Transport Controller (CTC) computers and ONS 15454 nodes, and
communication among networked ONS 15454 nodes. The chapter shows common Cisco ONS 15454 IP
network configurations and includes detailed data communications network (DCN) case studies that are
based on actual ONS 15454 installations. The chapter provides information about the ONS 15454 IP
routing table, external firewalls, and open gateway network element (GNE) networks.
Although ONS 15454 DCN communication is based on IP, ONS 15454 nodes can be networked to
equipment that is based on the Open System Interconnection (OSI) protocol suites. This chapter also
describes the ONS 15454 OSI implementation and provides scenarios that show how the ONS 15454 can
be networked within a mixed IP and OSI environment.
This chapter does not provide a comprehensive explanation of IP networking concepts and procedures,
nor does it provide IP addressing examples to meet all networked scenarios. For ONS 15454 networking
setup instructions, refer to the “Turn Up a Node” chapter of the Cisco ONS 15454 DWDM Procedure
Guide.
Note Unless otherwise specified, in this chapter “ONS 15454” refers to both ANSI and ETSI shelf assemblies.
Chapter topics include:
• 15.1 IP Networking Overview, page 15-2
• 15.2 IP Addressing Scenarios, page 15-2
• 15.3 DCN Case Studies, page 15-23
• 15.4 DCN Extension, page 15-37
• 15.5 Routing Table, page 15-39
• 15.6 External Firewalls, page 15-41
• 15.7 Open GNE, page 15-42
• 15.8 TCP/IP and OSI Networking, page 15-45
• 15.9 Link Management Protocol, page 15-49
• 15.10 IPv6 Network Compatibility, page 15-54
Note To connect ONS 15454s to an IP network, you must work with a LAN administrator or other individual
at your site who has IP networking training and experience.
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