12-2
Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter12 CT C Network Connectivity
12.2 IP Addressing Scenari os
The ONS 15454 SDH proxy server can control the visibility and accessibility between CTC
computers and ONS 15454 SDH element nodes.
12.2 IP Addressing Scenarios
ONS 15454 SDH IP addressing generally has eight common scenarios or configurations. Use the
scenarios as building blocks for more complex network configurations. Table12-1 provides a general
list of items to check when setting up ONS 15454 SDH nodes in IP networks.
Note The ONS 15454 secure mode option is available when TCC2/TCC2P cards are installed. Secure mode
allows two IP addresses to be provisioned for the node, one for the MIC-C/T/P LAN port and one for the
TCC2/TCC2P TCP/IP port. Secure mode IP addressing is described in the “12.2.9 Scenario 9: IP
Addressing with Secure Mode Enabled” section on page 12-19. IP addresses shown in the other
scenarios assume secure mode is not enabled or, if enable d, the IP addresses shown in the examples appl y
to the MIC-C/T/P LAN port.

12.2.1 Scenario 1: CTC and ONS 15454 SDH Nodes on Same Subnet

Scenario 1 shows a basic ONS 15454 SDH LAN configuration (Figure 12-1). The ONS 15454 SDH
nodes and CTC computer reside on the same subnet. All ONS 15454 SDH nodes connect to LAN A and
all ONS 15454 SDH nodes have DCC connections.
Table12-1 General ONS 15454 SDH IP Troubleshooting Checklist
Item What to check
Link integrity Verify that link integrity exists between:
CTC computer and network hub/switch
ONS 15454 SDH nodes (MIC-C/T/P wire-wrap pins or RJ-45 port) and
network hub/switch
Router ports and hub/switch ports
ONS 15454 SDH
hub/switch ports
If connectivity problems occur, set the hub or switch port that is connected to
the ONS 15454 SDH to 10 Mbps half-duplex.
Ping Ping the node to test connections between computers and ONS 15454 SDH
nodes.
IP addresses/subnet
masks
Verify that ONS 15454 SDH IP addresses and subnet masks are set up
correctly.
Optical connectivity Verify that ONS 15454 SDH optical trunk (span) ports are in service and that
a DCC is enabled on each trunk port.