Chapter 3 Message and Recovery Procedures

QM Messages

Error Message QATM-2-TCAM_WRITE: Cannot write the TCAM.

Note This message applies only to Catalyst 3550 switches.

Explanation The TCAM could not be written to. This error might mean a hardware failure.

Recommended Action Find out more about the error by using the show tech-supportprivileged EXEC command and by copying the error message exactly as it appears on the console or system log and entering it in the Output Interpreter tool. Use the Bug Toolkit to look for similar reported problems. For more information about these online tools and about contacting Cisco, see the “Error Message Traceback Reports” section on page 2-7for more information.

Error Message QATM-4-TCAM_LOW: TCAM resource running low for table [chars], resource type [chars], on TCAM number [dec].

Note This message applies only to Catalyst 3550 switches.

Explanation The TCAM resource is running low and might cause system instability. The first [chars] is the TCAM table, the second [chars] is the resource type, and [dec] is the TCAM number.

Recommended Action Avoid further configurations that might deplete the indicated TCAM resource type that is running low. Use the show tcam user EXEC command to display information about the input security access control list (ACL), the output security ACL, the QoS, or other regions of the TCAM, as shown in the message TCAM table. If possible, change to a different TCAM allocation by using the sdm prefer global configuration command to configure the template used in the Switch Database Management (SDM) resource allocation.

QM Messages

This section contains the QoS manager messages. An incorrect QoS setting causes these messages.

Error Message QM-4-ACTION_NOT_SUPPORTED: Action is not supported in policy map [chars].

Note This message applies only to Catalyst 3550 switches.

Explanation An action other than the set, trust, and police policy-map class configuration commands was configured in a policy map. This is a hardware limitation. [chars] is the name of the policy map.

Recommended Action Configure only the supported actions of set, trust, and police when in policy-map class configuration mode.

 

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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.