Cisco ONS 15454 - Page 460

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Cisco ONS 15454 Reference Manual, R7.0.1
OL-9217-01
Chapter 13 Management Network Connectivity
13.7 13.7.9 OSI/IP Networking Scenarios
Figure 13-34 OSI/IP Scenario 3 with OSI/IP-over-CLNS Tunnel Endpoint at the GNE
13.7.9.4 OSI/IP Scenario 4: Multiple ONS DCC Areas
OSI/IP Scenario 4 (Figure 13-35) is similar to OSI/IP Scenario 3 except that the OSI GNE is subtended
by multiple isolated ONS 15454 areas. A separate IP-over-CLNS tunnel is required to each isolated
ONS 15454 OSPF area. An alternate approach is to create a single IP-over-CLNS tunnel from CTC/CTM
to an ONS 15454 NE, and then to configure a tunnel from that NE to an NE in each isolated OSPF area.
This approach requires additional static routes.
1 The IP OSS manages ONS and other vendor NEs using TL1 and FTP.
2 The router routes requests to the other vender GNE.
3 The other vendor GNE performs mediation for TL1 and FTP, so the DCCs to ONS 15454 and
other vendor NEs are OSI-only.
4 CTC/CTM communicates with ONS 15454 NEs over an IP-over-CLNS tunnel between the
ONS 15454 and the GNE.
5 ONS 15454 NEs exchange TL1 over the full OSI stack. FTAM is used for file transfer.
131931
IP DCN
IP
IP
CTC/CTM
IP OSS
IP
Other
vendor GNE
ONS NE 1
ONS NE 2
Other
vendor NE
Other
vendor NE
IP and
OSI/PPP/DCC
OSI/LAP-D/DCC
OSI/LAP-D/DCC
OSI/LAPD/DCC
1
3
5
4
2