Chapter 7 Configuring STP and RSTP on the ML-Series Card

Verifying and Monitoring STP and RSTP Status

Table 7-6 Commands for Displaying Spanning-Tree Status

Command

Purpose

 

 

ML_Series# show spanning-tree

Displays detailed STP or RSTP information.

 

 

ML_Series# show spanning-tree

Displays brief summary of STP or RSTP information.

brief

 

 

 

ML_Series# show spanning-tree

Displays STP or RSTP information for the specified interface.

interface interface-id

 

 

 

ML_Series# show spanning-tree

Displays a summary of port states or displays the total lines of

summary [totals]

the STP or RSTP state section.

 

 

 

Note The show spanning-tree interface interface-idprivileged EXEC command displays information only if the port is in a link-up operative state. Otherwise, you can use the show running-config interface privileged EXEC command to confirm the configuration.

Examples of the show spanning-treeprivileged EXEC commands are shown here:

Example 7-1 show spanning-tree Commands

ML_Series# show spanning-tree brief

Bridge group 1 is executing the rstp compatible Spanning Tree protocol

Bridge Identifier has priority 32768, sysid 1, address 000b.fcfa.339e

Configured hello time 2, max age 20, forward delay 15

We are the root of the spanning tree

Topology change flag not set, detected flag not set

Number of topology changes 1 last change occurred 1w1d ago from POS0.1

Times: hold 1, topology change 35, notification 2 hello 2, max age 20, forward delay 15

Timers: hello 0, topology change 0, notification 0, aging 300

Port 3 (FastEthernet0) of Bridge group 1 is designated disabled

Port path cost 19, Port priority 128, Port Identifier 128.3.

Designated root has priority 32769, address 000b.fcfa.339e

Designated bridge has priority 32769, address 000b.fcfa.339e

Designated port id is 128.3, designated path cost 0

Timers: message age 0, forward delay 0, hold 0

Number of transitions to forwarding state: 0

Link type is point-to-point by default

BPDU: sent 0, received 0

ML_Series# show spanning-tree interface fastethernet 0

Port 3 (FastEthernet0) of Bridge group 1 is designated disabled

Port path cost 19, Port priority 128, Port Identifier 128.3.

 

Designated root has priority 32769, address 000b.fcfa.339e

 

Designated bridge has priority 32769, address 000b.fcfa.339e

 

Designated port id is 128.3, designated path cost 0

 

Timers: message age 0, forward delay 0, hold 0

 

Number of transitions to forwarding state: 0

 

Link type is point-to-point by default

 

BPDU: sent 0, received 0

 

ML_Series# show spanning-tree summary totals

 

Switch is in pvst mode

 

Root bridge for: Bridge group 1-Bridge group 8

 

Cisco ONS 15310-CL, ONS 15310-MA, and ONS 15310-MA SDH Ethernet Card Software Feature and Configuration Guide, R9.1 and R9.2

 

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Cisco Systems Cisco ONS 15310-MA, ONS 15310-CL manual Displays detailed STP or Rstp information, STP or Rstp state section
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ONS 15310-CL, ONS 15310-MA, Cisco ONS 15310-MA specifications

Cisco Systems has long been a leader in networking and telecommunications technology, and among its impressive lineup of products, the Cisco ONS 15310 series stands out as an essential solution for optical networking. This series includes models such as the ONS 15310-MA, ONS 15310-CL, and ONS 15310-CA, each designed to meet the diverse needs of service providers and enterprises seeking to enhance their optical transport networks.

The Cisco ONS 15310-MA is an advanced multi-service platform designed for metropolitan area networks. It facilitates the seamless transport of data, voice, and video over optical networks. One of its main features is its ability to support a variety of interfaces, including Ethernet, SONET/SDH, and Wavelength Division Multiplexing (WDM), allowing users to integrate multiple services into a single platform. Additionally, the ONS 15310-MA supports advanced traffic management and Quality of Service (QoS) features to prioritize critical applications and ensure consistent performance.

The ONS 15310-CL variant is tailored for more specific applications, providing enhanced capabilities aimed at delivering carrier-grade services. It features a robust architecture that accommodates high-capacity traffic without compromising reliability. This model emphasizes low power consumption and a compact design, making it suitable for deployment in space-constrained environments. The ONS 15310-CL also supports a wide range of optical interfaces, making it highly flexible for various network configurations.

In terms of technologies, the Cisco ONS 15310 series leverages Optical Transport Network (OTN) capabilities, providing high efficiency and greater bandwidth utilization. OTN technology enables efficient error correction and adds resilience to the network through its built-in protection mechanisms. Furthermore, the series supports seamless integration with existing IP/MPLS networks, creating a cohesive infrastructure as organizations evolve their networking requirements.

One of the defining characteristics of the ONS 15310 series is its focus on scalability. Network operators can start with a modest deployment and gradually expand capacity as demand grows. This adaptability is complemented by Cisco's comprehensive management and monitoring tools, providing operators with real-time insights into network performance and facilitating proactive management.

In conclusion, the Cisco ONS 15310-MA and ONS 15310-CL models represent sophisticated solutions for modern optical networks. With their versatile features, advanced technologies, and robust design, they empower service providers and enterprises to build resilient, high-capacity networks that meet the demands of today’s data-driven world.
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