Chapter 7 Circuits and Tunnels

Bridge and Roll

7.9.3 Single and Dual Rolls

Circuits have an additional layer of roll types: single and dual. A single roll on a circuit is a roll on one of its cross-connects. Use a single roll to:

Change either the source or destination of a selected circuit (Figure 7-7and Figure 7-8, respectively).

Roll a segment of the circuit onto another chosen circuit (Figure 7-9 on page 7-20). This roll also results in a new destination or a new source.

In Figure 7-7, you can select any available VC high-order path on Node 1 for a new source.

Figure 7-7

S1

S2

Single Source Roll

Node 1

Original leg

New leg

Node 2

D

83267

In Figure 7-8, you can select any available VC high-order path on Node 2 for a new destination.

Figure 7-8

S

Single Destination Roll

Node 1

Original leg

New leg

Node 2

D1

D2

83266

Figure 7-9shows one circuit rolling onto another circuit at the destination. The new circuit has cross-connects on Node 1, Node 3, and Node 4. CTC deletes the cross-connect on Node 2 after the roll.

Figure 7-9 Single Roll from One Circuit to Another Circuit (Destination Changes)

S

Node 1

Node 2

D

Node 3

Node 4

D2

Original leg

New leg

78703

Figure 7-10shows one circuit rolling onto another circuit at the source.

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

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78-19417-01

 

 

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Cisco Systems 15310-MA manual Single and Dual Rolls, Single Destination Roll

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.

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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.