Chapter 9 Management Network Connectivity

9.2.3 Scenario 3: Using Proxy ARP to Enable an ONS 15600 Gateway

Figure 9-2 Scenario 2: CTC and ONS 15600s Connected to Router

 

 

 

LAN A

 

 

 

 

 

 

 

 

 

 

 

 

 

Int "A"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Int "B"

 

 

 

 

 

 

 

 

 

CTC Workstation

Router

 

IP Address 192.168.1.100

 

 

 

IP Address of interface “A” to LAN “A” 192.168.1.1

 

 

 

 

Subnet Mask 255.255.255.0

 

 

 

IP Address of interface “B” to LAN “B” 192.168.2.1

Default Gateway = 192.168.1.1

 

 

 

Subnet Mask 255.255.255.0

 

Host Routes = N/A

 

 

 

Default Router = N/A

 

 

 

 

 

 

 

 

 

 

 

Host Routes = N/A

 

 

 

 

 

 

 

 

 

 

 

LAN B

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ONS 15600 #2

 

 

 

 

 

 

 

 

 

 

IP Address 192.168.2.20

 

 

 

 

 

 

 

 

 

 

Subnet Mask 255.255.255.0

 

 

 

 

 

 

 

 

 

 

Default Router = 192.168.2.1

 

 

 

 

 

 

 

 

 

 

Static Routes = N/A

 

 

 

 

 

 

 

 

 

 

 

 

 

SONET RING

ONS 15600 #1

ONS 15600 #3

 

IP Address 192.168.2.10

IP Address 192.168.2.30

 

Subnet Mask 255.255.255.0

Subnet Mask 255.255.255.0

 

Default Router = 192.168.2.1

Default Router = 192.168.2.1

81201

Static Routes = N/A

Static Routes = N/A

9.2.3 Scenario 3: Using Proxy ARP to Enable an ONS 15600 Gateway

Scenario 3 is similar to Scenario 1, but only one ONS 15600 (Node 1) connects to the LAN (Figure 9-3). Two ONS 15600s (Nodes 2 and 3) connect to Node1 through the SONET data communications channel (DCC). Because all three ONS 15600s are on the same subnet, Proxy ARP enables Node 1 to serve as a gateway for Nodes 2 and 3.

Note This scenario assumes that all CTC connections are to Node 1. If you connect a laptop to either Node 2 or Node 3, network partitioning will occur; neither the laptop or the CTC computer will be able to see all nodes. If you want laptops to connect directly to end network elements (ENEs), you will need to create static routes (refer to the “9.2.5 Scenario 5: Using Static Routes to Connect to LANs” section on page 9-6) or enable the ONS 15600 proxy server (see the “9.2.7 Scenario 7: Provisioning the

ONS 15600 Proxy Server” section on page 9-11).

Cisco ONS 15600 Reference Manual, R7.2

9-4

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Cisco Systems manual Scenario 3 Using Proxy ARP to Enable an ONS 15600 Gateway, ONS 15600 Proxy Server section on
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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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