Scenario 6: Using Ospf - Cisco ONS 15600 Reference Manual

9.2.6 Scenario 6: Using OSPF

Figure 9-6
Subnet Mask 255.255.255.0
Default Gateway = 192.168.1.1
Subnet Mask 255.255.255.0
9.2.6 Scenario 6: Using OSPF
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 their links with their neighbors. Link state protocols advertise their
directly connected networks and their active links. Each link state router captures the link state
advertisements (LSAs) 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. The router
continuously recalculates to capture ongoing topology changes.
ONS 15600 SDHs use the OSPF protocol in internal ONS 15600 SDH networks for node discovery,
circuit routing, and node management. You can enable OSPF on the ONS 15600 SDHs so that the
ONS 15600 SDH topology is sent to OSPF routers on a LAN. Advertising the ONS 15600 SDH network
Cisco ONS 15600 SDH Reference Manual, Release 9.0
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Scenario 5: Static Route with Multiple LAN Destinations
LAN D
Router #3
LAN C
LAN A
CTC Workstation
IP Address 192.168.1.100
Host Routes = N/A
ONS 15600 SDH #2
IP Address 192.168.2.20
Default Router = N/A
Static Routes = N/A
Router #2
Router #1
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
Int "A"
Int "B"
ONS 15600 SDH #1
IP Address 192.168.2.10
Subnet Mask 255.255.255.0
Default Router = 192.168.2.1
Static Routes
SDH RING
Chapter 9 Management Network Connectivity
Destination 0.0.0.0
Mask 0.0.0.0
Next Hop 192.168.2.1
Cost = 2
ONS 15600 SDH #3
IP Address 192.168.2.30
Subnet Mask 255.255.255.0
Default Router = N/A
Static Routes = N/A
LAN B
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