Chapter 3 Message and Recovery Procedures

AUTOQOS Messages

Error Message ACLMGR-3-UNLOADING: Unloading [chars] label [dec] feature.

Explanation The ACL manager was unable to fit the complete configuration into the hardware, so some features will be applied in software. This prevents some or all of the packets in a VLAN from being forwarded in hardware and requires them to be forwarded by the CPU. Multicast packets might be dropped entirely instead of being forwarded. [chars] is the direction (input or output), and [dec] is the label number.

Recommended Action Use a simpler configuration. Use the same ACLs on multiple interfaces, if possible.

AUTOQOS Messages

This section contains the automatic quality of service (auto-QoS) messages.

Error Message AUTOQOS-3-FEATURE_UNINITIALIZED: Feature not initialized in the platform, [chars].

Note This message applies only to Catalyst 3550 switches.

Explanation The feature did not initialize and is not enabled on any interface. [chars] is the feature name, which is auto-QoS.

Recommended Action If this feature does not operate, reboot the system by using the reload privileged EXEC command. Verify that this feature is supported on your switch by checking the software configuration guide for this software release.

BACKUP_INTERFACE Messages

This section contains the Flex Link messages.

Error Message BACKUP_INTERFACE-5-PREEMPT: Preempting interface [chars] in backup pair ([chars], [chars]), preemption mode is [chars]

Explanation The switch is pre-empting the current forwarding interface in the backup interface pair. The first [chars] is the number of the current forwarding interface. The second and third [chars] are the names of the interfaces in the backup pair, and the fourth [chars] is the pre-emption mode.

Recommended Action No action is required.

Error Message BACKUP_INTERFACE-5-VLB_NON_TRUNK: Warning: Flexlink VLB is not allowed on non-trunk ports. Please configure [chars] to be a trunk port.

Explanation Flex Link VLB detects a nontrunk port. [chars] is the interface name.

Recommended Action Configure the interface to operate in trunking mode.

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

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Cisco Systems 3750 manual Autoqos Messages, Backupinterface Messages, This section contains the Flex Link 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.