Chapter 4 Cisco Transport Controller Operation

Using the CTC Launcher Application to Manage Multiple ONS Nodes

Figure 4-8

TL1 Tunnels

IP + OSI

Tunnel provisioning

IP DCN

CTC

Central office

Other vendor

GNE 1

TL1 tunnel

ONS ENE 1

OSI/DCC IP/DCC

IP

TL1 tunnel

Other vendor

ONS ENE 2

GNE 2

OSI/DCC

IP/DCC

140175

TL1 tunnels provide several advantages over static IP-over-CLNS tunnels. Because tunnel provisioning is needed only at the CTC computer, they are faster to set up. Because they use TL1 for TCP transport, they are more secure. TL1 tunnels also provide better flow control. On the other hand, IP over CLNS tunnels require less overhead and usually provide a slight performance edge over TL1 Tunnels (depending on network conditions). TL1 tunnels do not support all IP applications such as SNMP and RADIUS Authentication. Table 4-11shows a comparison between the two types of tunnels.

Table 4-11

TL1 and Static IP-Over-CLNS Tunnels Comparison

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Static

 

 

 

 

Category

 

IP-Over-CLNS

TL1 Tunnel

Comments

 

 

 

 

 

 

 

Setup

 

Complex

Simple

Requires provisioning at ONS NE, GNE, and DCN routers. For

 

 

 

 

 

 

 

TL1 tunnels, provisioning is needed at CTC computer.

 

 

 

 

 

 

 

Performance

 

Best

Average to

Static tunnels generally provide better performance than TL1

 

 

 

 

 

 

good

tunnels, depending on TL1 encoding used. LV+Binary provides

 

 

 

 

 

 

 

the best performance. Other encoding will produce slightly

 

 

 

 

 

 

 

slower TL1 tunnel performance.

 

 

 

 

 

 

 

Support all IP

 

Yes

No

TL1 tunnels do not support SNMP or RADIUS Server IP

 

applications

 

 

 

applications.

 

 

 

 

 

 

 

ITU Standard

 

Yes

No

Only the static IP-over-CLNS tunnels meet ITU standards. TL1

 

 

 

 

 

 

 

tunnels are new.

 

 

 

 

 

 

Tunnel traffic control

Good

Very good

Both tunnel types provide good traffic control

 

 

 

 

 

 

 

Security setup

 

Complex

No setup

Static IP-over-CLNS tunnels require careful planning. Because

 

 

 

 

 

 

needed

TL1 tunnels are carried by TL1, no security provisioning is

 

 

 

 

 

 

 

needed.

 

 

 

 

 

 

 

 

 

 

Cisco ONS 15310-MA SDH Reference Manual, Release 9.1 and Release 9.2

 

 

 

 

 

 

 

 

 

 

 

 

 

4-18

 

 

 

 

 

78-19417-01

 

 

 

 

 

 

 

 

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Image 104
Cisco Systems 15310-MA manual Static Category IP-Over-CLNS TL1 Tunnel Comments

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.