Chapter 9 Management Network Connectivity

9.2.6 Scenario 6: Using OSPF

Figure 9-6

LAN D

Scenario 5: Static Route with Multiple LAN Destinations

Router #3

LAN C

Router #2

LAN A

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 ”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"

LAN B

ONS 15600 #1

IP Address 192.168.2.10

Subnet Mask 255.255.255.0

Default Router = 192.168.2.1

Static Routes

Destination 0.0.0.0

Mask 0.0.0.0

Next Hop 192.168.2.1

Cost = 2

SONET RING

ONS 15600 #2

IP Address 192.168.2.20

Subnet Mask 255.255.255.0

Default Router = N/A

Static Routes = N/A

ONS 15600 #3

IP Address 192.168.2.30

Subnet Mask 255.255.255.0

Default Router = N/A

Static Routes = N/A

81206

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 15600s use the OSPF protocol in internal ONS 15600 networks for node discovery, circuit routing, and node management. You can enable OSPF on the ONS 15600s so that the ONS 15600 topology is sent to OSPF routers on a LAN. Advertising the ONS 15600 network topology to LAN routers means

Cisco ONS 15600 Reference Manual, R7.2

9-8

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Cisco Systems ONS 15600 manual Scenario 6 Using Ospf, Scenario 5 Static Route with Multiple LAN Destinations
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ONS 15600 specifications

Cisco Systems ONS 15600 is a highly versatile optical networking platform designed to meet the demands of modern telecommunications and data services. This multiservice edge platform supports various transmission mediums and offers a wide array of features that enable efficient data transport. Ideal for service providers and large enterprises, the ONS 15600 is engineered to provide scalable and reliable optical transport solutions.

One of the notable features of the ONS 15600 is its capability to support multiple protocols, including SONET/SDH, Ethernet, OTN, and legacy TDM services. This flexibility allows users to tailor their networks according to specific service requirements while ensuring interoperability with existing infrastructure. The platform is designed to facilitate seamless service migration, accommodating both legacy and next-generation services.

The modular architecture of the ONS 15600 enhances its scalability. It allows for easy expansion by incorporating additional line cards or interface modules without requiring significant downtime. This modularity ensures that service providers can evolve their networks over time, responding to increasing bandwidth demands and new service offerings with ease.

Incorporating advanced technologies, the ONS 15600 employs Dense Wavelength Division Multiplexing (DWDM), significantly increasing the capacity of fiber networks by allowing multiple signals to be transmitted simultaneously over a single optical fiber. This capability helps to optimize fiber utilization and reduce operational costs. In addition, the platform supports Optical Transport Network (OTN) for improved error detection and correction, contributing to higher reliability and performance.

Another key characteristic of the ONS 15600 is its robust management capabilities. The platform can be managed through Cisco's Optical Networking Manager (ONM), providing a centralized interface for network configuration, monitoring, and troubleshooting. This enhances operational efficiency and minimizes downtime, allowing service providers to focus on delivering quality services to their customers.

The ONS 15600 also prioritizes security, offering various features like encryption and access control to safeguard sensitive data during transmission. With its combination of scalability, flexibility, and security, the Cisco ONS 15600 stands out as a reliable choice for organizations looking to enhance their optical networking capabilities while meeting the evolving demands of the digital landscape. Its commitment to quality and performance makes it a cornerstone of modern optical networks.
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