Chapter 8 Management Network Connectivity

TCP/IP and OSI Networking

8.6.7.1 Provisioning IP-over-CLNS Tunnels

IP-over-CLNS tunnels must be carefully planned to prevent nodes from losing visibility or connectivity. Before you begin a tunnel, verify that the tunnel type, either Cisco IP or GRE, is supported by the equipment at the other end. Always verify IP and NSAP addresses. Provisioning of IP-over-CLNS tunnels in CTC is performed on the node view Provisioning > OSI > IP over CLNS Tunnels tab. For procedures, see the “Turn Up a Node” chapter in the Cisco ONS 15310-MA SDH Procedure Guide.

Provisioning IP-over-CLNS tunnels on Cisco routers requires the following prerequisite tasks, as well as other OSI provisioning:

(Required) Enable IS-IS

(Optional) Enable routing for an area on an interface

(Optional) Assign multiple area addresses

(Optional) Configure IS-IS interface parameters

(Optional) Configure miscellaneous IS-IS parameters

The Cisco IOS commands used to create IP-over-CLNS tunnels (CTunnels) are shown in Table 8-13.

Table 8-13

IP Over CLNS Tunnel Cisco IOS Commands

 

 

 

 

Step

Step

 

Purpose

 

 

 

1

Router (config) # interface ctunnel

Creates a virtual interface to transport IP over a

 

interface-number

CLNS tunnel and enters interface configuration

 

 

 

mode. The interface number must be unique for each

 

 

 

CTunnel interface.

 

 

 

2

Router (config-if # ctunnel destination

Configures the destination parameter for the

 

remote-nsap-address

CTunnel. Specifies the destination NSAP1 address of

 

 

 

the CTunnel, where the IP packets are extracted.

 

 

 

3

Router (config-if) # ip address

Sets the primary or secondary IP address for an

 

ip-address mask

interface.

 

 

 

 

If you are provisioning an IP-over-CLNS tunnel on a Cisco router, always follow procedures provided in the Cisco IOS documentation for the router you are provisioning. For information about ISO CLNS provisioning including IP-over-CLNS tunnels, refer to the “Configuring ISO CLNS” chapter in the Cisco IOS Apollo Domain, Banyon VINES, DECnet, ISO CLNS, and XNS Configuration Guide.

8.6.7.2 IP Over CLNS Tunnel Scenario 1: ONS Node to Other Vendor GNE

Figure 8-19shows an IP-over-CLNS tunnel created from an ONS node to another vendor GNE. The other vendor NE has an IP connection to an IP DCN to which a CTC computer is attached. An OSI-only (LAP-D) RS-DCC and a GRE tunnel are created between the ONS NE 1 to the other vender GNE.

IP-over-CLNS tunnel provisioning on the ONS NE 1:

Destination: 10.10.10.100 (CTC 1)

Mask: 255.255.255.255 for host route (CTC 1 only), or 255.255.255.0 for subnet route (all CTC computers residing on the 10.10.10.0 subnet)

NSAP: 39.840F.80.1111.0000.1111.1111.cccccccccccc.00 (other vendor GNE)

Metric: 110

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Cisco Systems 15310-MA Provisioning IP-over-CLNS Tunnels, IP Over Clns Tunnel Scenario 1 ONS Node to Other Vendor GNE

15310-MA specifications

Cisco Systems has established itself as a leader in the networking domain, offering a wide array of solutions to meet the needs of modern businesses. Among its impressive product lineup are the Cisco 15310-CL and 15310-MA routers, designed to provide advanced network performance and reliability.

The Cisco 15310-CL is a versatile platform that primarily serves as a carrier-class router aimed at supporting high-speed data and voice services. It is built to handle the demands of large enterprises and service providers, offering a robust design that ensures maximum uptime and performance. One of its standout features is its modular architecture, which enables users to customize their configurations based on specific application needs. This scalability allows for future expansion without the need for a complete hardware overhaul.

Key technologies integrated into the Cisco 15310-CL include high-density Ethernet interfaces and a comprehensive suite of Layer 2 and Layer 3 protocol support. The device is capable of supporting multiple types of connections, including TDM, ATM, and Ethernet. This flexibility makes it an ideal choice for organizations that require seamless migration between various service types. Moreover, with features such as MPLS (Multiprotocol Label Switching) support and advanced Quality of Service (QoS) mechanisms, the router ensures that critical applications receive the necessary bandwidth and low latency required for optimal performance.

In contrast, the Cisco 15310-MA focuses on access solutions, providing a cost-effective entry point for businesses looking to enhance their network capabilities. It is well-suited for smaller offices or branch locations that need reliable connectivity without the expense and complexity associated with larger systems. The device supports a range of access methods and provides essential features like firewall capabilities, VPN support, and comprehensive security measures to protect sensitive data.

Both models benefit from Cisco's commitment to security and manageability, offering features like enhanced encryption protocols and user authentication mechanisms that help safeguard networks against threats. Additionally, they can be managed through Cisco’s intuitive software tools, simplifying configuration and monitoring tasks for IT administrators.

The Cisco 15310-CL and 15310-MA are ideal solutions for businesses seeking to enhance their network infrastructure, ensuring firms can keep pace with evolving technology demands while maintaining a focus on security and performance. Their combination of advanced features, modular capabilities, and robust support makes them valuable assets in the networking landscape.