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Cisco ONS 15454 Reference Manual, R8.5.x
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13
Management Network Connectivity
This chapter provides an overview of ONS 15454 data communications ne twork (DCN) connectivity.
Cisco Optical Networking System (ONS) network communication is based on IP, including
communication between Cisco Transport Controller (CTC) computers a nd ONS 15454 nodes, and
communication among networked ONS 15454 nodes. The chapt er provides scenarios showing Cisco
ONS 15454 nodes in common IP network configurations as wel l as information about provisionable
patchcords, the 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 t o
equipment that is based on the Open System Interconnection (OSI) protocol suites. This chapter also
describes the ONS 15454 OSI implementation an d provides scenarios that show how the ONS 1545 4 can
be networked within a mixed IP and OSI environment.
Note This chapter does not provide a comprehensive explanation of IP networking conc epts 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 Procedure Guide.
Chapter topics include:
• 13.1 IP Networking Overview, page 13-1
• 13.2 IP Addressing Scenarios, page 13-2
• 13.3 Routing Table, page 13-24
• 13.4 External Firewalls, page 13-25
• 13.5 Open GNE, page 13-27
• 13.6 TCP/IP and OSI Networking, page 13-29
• 13.7 IPv6 Network Compatibility, page 13-62
• 13.8 FTP Support for ENE Database Backup, page 13-62
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.

13.1 IP Networking Overview

ONS 15454s can be connected in many different ways within an IP environment :