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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
IP Addressing Scenarios
Figure 8-5 Scenario 4: Default Gateway on a CTC Computer
8.2.5 Scenario 5: Using Static Routes to Connect to LANs
Static routes are used for two purposes:
• To connect ONS 15310-MA SDH nodes to CTC sessions on one subnet that are connected by a
router to ONS 15310-MA SDH nodes residing on another subnet. (These static routes are not needed
if OSPF is enabled. Scenario 6 shows an OSPF example.)
• To enable multiple CTC sessions among ONS 15310-MA SDH nodes residing on the same subnet.
In Figure 8-6, one CTC residing on subnet 192.168.1.0 connects to a router through interface A. (The
router is not set up with OSPF.) ONS 15310-MA SDH nodes residing on different subnets are connected
through Node 1 to the router through interface B. Because Nodes 2 and 3 are on different subnets, proxy
ARP does not enable Node 1 as a gateway. To connect to CTC computers on LAN A, a static route is
created on Node 1.
CTC Workstation
IP Address 192.168.1.100
Subnet Mask 255.255.255.0
Default Gateway = 192.168.1.10
Host Routes = N/A
ONS 15310 #2
IP Address 192.168.2.20
Subnet Mask 255.255.255.0
Default Router = N/A
Static Routes = N/A
ONS 15310 #1
IP Address 192.168.1.10
Subnet Mask 255.255.255.0
Default Router = N/A
Static Routes = N/A
ONS 15310 #3
IP Address 192.168.3.30
Subnet Mask 255.255.255.0
Default Router = N/A
Static Routes = N/A
LAN A
SDH RING
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