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Cisco ONS 15310-MA SDH Reference Manual, Release 9.1 and Release 9.2
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Chapter 8 Management Network Connectivity
TCP/IP and OSI Networking
Figure 8-20 IP-Over-CLNS Tunnel Scenario 2: ONS Node to Router
8.6.7.4 IP-Over-CLNS Tunnel Scenario 3: ONS Node to Router Across an OSI DCN
Figure 8-21 shows an IP-over-CLNS tunnel from an ONS node to a router across an OSI DCN. The other
vendor NE has an OSI connection to an IP DCN to which a CTC computer is attached. An OSI-only
(LAP-D) RS-DCC is created between the ONS NE 1 and the other vender GNE. The OSI-over-IP tunnel
can be either the Cisco IP tunnel or a GRE tunnel, depending on the tunnel types supported by the router.
IP-over-CLNS tunnel provisioning on ONS NE 1:
• Destination: Router 2 IP address
• Mask: 255.255.255.255 for host route (CTC 1 only), or 255.255.255.0 for subnet route (all CTC
computers on the same subnet)
• NSAP: Other vender GNE NSAP address
• Metric: 110
• Tunnel Type: Cisco IP
IP-over-OSI tunnel provisioning on Router 2 (sample Cisco IOS provisioning):
134356
CTC 1
10.10.10.100/24
IP
DCN
OSI
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
