8-9
Cisco ONS 15310-MA SDH Reference Manual, Release 9.1 and Release 9.2
78-19417-01
Chapter 8 Management Network Connectivity
IP Addressing Scenarios
Figure 8-7 Scenario 5: Static Route with Multiple LAN Destinations
8.2.6 Scenario 6: Using OSPF
Open Shortest Path First (OSPF) is a link-state Internet routing protocol. Link-state protocols use a
“hello protocol” to monitor their links with adjacent routers and to test the status of their links to their
neighbors. Link-state protocols advertise their directly connected networks and their active links. Each
link state router captures the link state “advertisements” and puts them together to create a topology of
the entire network or area. From this database, the router calculates a routing table by constructing a
shortest path tree. Routes are recalculated when topology changes occur.
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 #1
IP Address of interface îAî to LAN ìAî 192.168.1.1
IP Address of interface ìBî to LAN ìBî 192.168.2.1
Subnet Mask 255.255.255.0
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 192.168.2.10
Subnet Mask 255.255.255.0
Default Router = 192.168.2.1
ONS 15310 #3
IP Address 192.168.2.30
Subnet Mask 255.255.255.0
Default Router = N/A
Static Routes = N/A
LAN B
LAN A
Int "A"
Int "B"
SDH RING
Static Routes
Destination 0.0.0.0
Mask 0.0.0.0
Next Hop 192.168.2.1
Cost = 2
LAN C
LAN D
Router #3
Router #2
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