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Cisco ONS 15454 Reference Manual, R7.0
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Chapter 13 Management Network Connectivity
13.7 13.7.9 OSI/IP Networking Scenarios
Figure 13-30 IP-over-CLNS Tunnel Scenario 3: ONS Node to Router Across an OSI DCN
13.7.9 OSI/IP Networking Scenarios
The following eight scenarios show examples of ONS 15454s in networks with OSI-based NEs. The
scenarios show ONS 15454 nodes in a variety of roles. The scenarios assume the following:
• ONS 15454 NEs are configured as dual OSI and IP nodes with both IP and NSAP addresses. They
run both OSPF and OSI (IS-IS or ES-IS) routing protocols as “Ships-In-The-Night,” with no route
redistribution.
• ONS 15454 NEs run TARP, which allows them to resolve a TL1 TID to a NSAP address. A TID
might resolve to both an IP and an NSAP address when the destination TID is an ONS 15454 NE
that has both IP and NSAP address.
• DCC links between ONS 15454 NEs and OSI-only NEs run the full OSI stack over LAP-D, which
includes IS-IS, ES-IS, and TARP.
• DCC links between ONS 15454 NEs run the full OSI stack and IP (OSPF) over PPP.
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CTC 1
10.10.10.100/24
OSI
DCN
OSI
IP
Other vendor
GNE
Other vendor
NE
OSI
OSI-only
DCC (LAPD)
GRE or
Cisco IP tunnel
OSI
ONS NE 1
10.10.30.30/24
39.840F.80. 111111.0000.1111.1111.dddddddddddd.00
Router 2
Interface 0/0: 10.10.10.10/24
Interface 0/1: 10.10.20.10/24
39.840F.80.111111.0000.1111.1111.aaaaaaaaaaaa.00
Router 1
Interface 0/0: 10.10.20.20/24
Interface 0/1: 10.10.30.10/24
39.840F.80. 111111.0000.1111.1111.bbbbbbbbbbbb.00