Chapter 7 Circuits and Tunnels

Circuit Properties

Assign different circuit sizes.

Automatically or manually route circuits.

Automatically create multiple circuits with autoranging. VC low-order path tunnels do not use autoranging.

Provide full protection to the circuit path.

Provide only protected sources and destinations for circuits.

Define a secondary circuit source or destination that allows you to interoperate an ONS 15310-MA SDH Linear Multiplex Section Protection configuration with third-party equipment Linear Multiplex Section Protection configurations.

Set Linear Multiplex Section Protection circuits as revertive or nonrevertive.

For the ONS 15310-MA SDH CE-100T-8, CE-MR-6 (ONS 15310-MA SDH only), or ML-100T-8 cards, you can provision circuits either before or after the cards are installed if the slots are provisioned. For the 15310-MA SDH 15310E-CTX-K9 card, you must preprovision the small form-factor pluggables (SFPs) (called pluggable port modules [PPMs] in CTC) before you can create an optical circuit. However, circuits do not carry traffic until the cards and SFPs are installed and the ports are In-Service and Normal (unlocked-enabled); Out-of-Service and Autonomous, Automatic In-Service (OO-AU,Automatic In Service); or Out-of-Service and Management, Maintenance (locked-enabled,maintenance).

7.2 Circuit Properties

You can view information about circuits in the ONS 15310-MA SDH Circuits window, which appears in network, node, and card view. The Circuits window shows the following information:

Name—The name of the circuit. The circuit name can be manually assigned or automatically generated.

Type—The circuit types are: VC high-order path (VC high-order path circuit), VC low-order path (VC low-order path circuit), LOP Tunnel (VC low-order path tunnel), LAP (VC low-order path aggregation point), HOP-V (VC virtual concatenated [VCAT] circuit), or VC low-order path-V (VC low-order path VCAT circuit).

Size—The circuit size. VC low-order path circuits are VC12 and VC3. ONS 15310-MA SDH VC high-order path circuits are VC4, VC4-2c, VC4-3c, or VC4-4c, VC4-8c, and VC4-16c. VCAT circuits are VC-12-nv or VC3-nv, where n is the number of members.

Protection—The type of circuit protection.

Direction—The circuit direction, either two-way or one-way.

Status—The circuit status. See the “7.2.1 Circuit Status” section on page 7-3.

Source—The circuit source in the format: node/slot/port “port name”/VC. (Port name appears in quotes.) Node and slot always appear; port “port name”/VC might appear, depending on the source card, circuit type, and whether a name is assigned to the port. If the port uses a pluggable port module (PPM), the port format is PPM-port number, for example, p2-1. If the port is a E1, DS3, or E3 port, port type is indicated, for example, pE1. If the circuit size is a concatenated size (3c, 6c, 9c, 12c), VCs used in the circuit are indicated by an ellipsis, for example, S7..9, (VCs 7, 8, and 9) or S10..12 (VCs 10, 11, and 12).

Destination—The circuit destination in the same format as the circuit source.

# of Spans—The number of internode links that constitute the circuit. Right-clicking the column displays a shortcut menu from which you can choose to show or hide circuit span detail.

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

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Cisco Systems 15310-MA manual Circuit Properties

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.