Chapter 3 Message and Recovery Procedures

GIGASTACK Messages

GIGASTACK Messages

This section contains the GigaStack GBIC module messages.

Error Message GIGASTACK-1-NO_LOOP_DETECT: The link neighbor of link [dec] of GigaStack GBIC in [chars] did not respond to the loop detection request. If loop topology is deployed, make sure all switches in the stack are running the latest software.

Note This message applies only to Catalyst 3550 switches.

Explanation No acknowledgement for the loop-detection request is received from one of the links on a GigaStack GBIC module. Either the neighboring switch does not support the GigaStack GBIC loop-breaking algorithm, or the link between the two GigaStack GBIC modules is broken. Under this condition, a GigaStack loop topology is not automatically detected, and the connectivity between switches in the stack can be lost. [dec] is the link number, and [chars] is the slot number.

Recommended Action If a loop topology is used with the GigaStack GBIC module, ensure that the latest software is running on all switches in the stack. Check the GigaStack GBIC modules involved to ensure that they are functioning.

Error Message GIGASTACK-3-INIT_FAILURE: GigaStack GBIC in [chars] initialization failed.

Note This message applies only to Catalyst 3550 switches.

Explanation The GigaStack GBIC module failed power-on self-test (POST). [chars] is the interface name.

Recommended Action Remove the GigaStack GBIC module, and re-insert it into the GBIC module slot.

Error Message GIGASTACK-6-LOOP_BROKEN: Link loss is detected in the GigaStack loop. Link 2 of the GigaStack GBIC in [chars] is re-enabled.

Note This message applies only to Catalyst 3550 switches.

Explanation The loop formed by GigaStack GBIC modules is broken because of a link loss. Link 2 of the master loop breaker is re-enabled to replace the broken link. [chars] is the interface name.

Recommended Action No action is required.

Catalyst 3750, 3560, 3550, 2975, 2970, and 2960 Switch System Message Guide

 

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Cisco Systems 3750 manual Gigastack Messages, This section contains the GigaStack Gbic module messages

3750 specifications

The Cisco Systems 3750 series is a family of enterprise-class stackable switches that were designed to provide high-performance networking solutions for organizations requiring robust management features, security, and scalability. Known for their reliability and advanced capabilities, the 3750 series is particularly aimed at accommodating the demands of LAN environments in organizations ranging from small businesses to large enterprises.

One of the defining features of the Cisco 3750 series is its StackWise technology. This innovative feature enables the stacking of up to nine switches together, allowing them to function as a single logical unit. This results in simplified management, higher redundancy, and increased scalability. The StackWise technology allows for seamless failover and enhanced bandwidth between the stacked switches.

In terms of performance, the 3750 series supports Layer 2 and Layer 3 switching, offering routing capabilities to handle both traditional and modern network demands. It is equipped with advanced Quality of Service (QoS) features, ensuring that critical applications such as voice and video are prioritized for optimal performance.

The Cisco 3750 also features extensive security capabilities. It incorporates features such as IEEE 802.1X authentication, DHCP snooping, and dynamic ARP inspection to protect against unauthorized access and various network attacks. These enhancements help maintain data integrity and secure communications across the network.

Another noteworthy characteristic of the 3750 series is its support for Power over Ethernet (PoE). PoE allows for the delivery of power over Ethernet cables to connected devices, such as IP phones and wireless access points, facilitating simpler installations and reducing the need for additional power outlets.

The Cisco 3750 series also provides a comprehensive set of management tools. With features like Cisco's Embedded Event Manager (EEM) and extensive SNMP support, network administrators can efficiently monitor and manage network performance, troubleshoot issues, and maintain high availability.

Additionally, the series is compatible with Cisco's IOS software, which provides a rich set of features, including advanced routing protocols, multicast support, and extensive security options, further enhancing the functionality and versatility of the switches.

Overall, the Cisco Systems 3750 series stands out for its stackable design, high-performance features, security capabilities, and management tools, making it a popular choice for organizations looking for dependable and scalable networking solutions.