12-11
Cisco ONS 15454 SDH Reference Manual, R5.0
April 2008
Chapter12 CTC Network Connectivity
12.2.7 Scenario 7: Provisioning the ONS 15454 SDH Proxy Server
Figure 12-9 shows the same network as Figure 12-8 on page 12-10without OSPF. Static routes must be
manually added to the router for CTC computers on LAN A to communicate with Nodes 2 and 3 becau se
these nodes reside on different subnets.
Figure12-9 Scenario 6: OSPF Not Enabled
12.2.7 Scenario 7: Provisioning the ONS 15454 SDH Proxy Server
The ONS 15454 SDH proxy server is a set of functions that allows you to network ONS 15454 SDH
nodes in environments where visibility and accessibility between ONS 15454 SDH nodes and CTC
computers must be restricted. For example, you can set up a network so that field technicians and
network operating center (NOC) personnel can access the same ONS 15454 SDH node s while preventing
the field technicians from accessing the NOC LAN. To do this, one ONS 15454 SDH is provisioned as
a gateway network element (GNE) and the other ONS 15454 SDH nodes are provisioned as external
CTC Workstation
IP Address 192.168.1.100
Subnet Mask 255.255.255.0
Default Gateway = 192.168.1.1
Host Routes = N/A
Router
IP Address of interface “A” to LAN A 192.168.1.1
IP Address of interface “B” to LAN B 192.168.2.1
Subnet Mask 255.255.255.0
Static Routes = Destination 192.168.3.20 Next Hop 192.168.2.10
Destination 192.168.4.30 Next Hop 192.168.2.10
ONS 15454 SDH #2
IP Address 192.168.3.20
Subnet Mask 255.255.255.0
Default Router = N/A
Static Routes = N/A
ONS 15454 SDH #1
IP Address 192.168.2.10
Subnet Mask 255.255.255.0
Default Router = 192.168.2.1
Static Routes
Destination = 192.168.1.100
Mask = 255.255.255.255
Next Hop = 192.168.2.1
Cost = 2
ONS 15454 SDH #3
IP Address 192.168.4.30
Subnet Mask 255.255.255.0
Default Router = N/A
Static Routes = N/A
LAN B
LAN A
Int "A"
Int "B"
SDH RING
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