Chapter 3 Message and Recovery Procedures

PLATFORM_HCEF Messages

Error Message PLATFORM_FBM-4-RESOURCE_CRUNCH: Fallback bridging on bridge-group [dec] is experiencing a resource crunch. One or more bridge-groups may not be functional. It will recover automatically when system recovers from resource crunch. Delete the bridge-group to immediately recover.

Note This message applies only to Catalyst 3750 and 3560 switches.

Explanation Fallback bridging could not be configured properly. The most likely cause is a

TCAM-full condition on at least one stack member.

Recommended Action The switch automatically recovers, but this could take some time. For an immediate recovery, use the shutdown interface configuration command to disable the port and stop the traffic flow to the switch. Use the clear mac-address-table dynamic privileged EXEC command to remove all MAC addresses from the TCAM. Use the no shutdown interface configuration command to re-enable the port.

PLATFORM_HCEF Messages

This section has the Cisco Express Forwarding (CEF) message.

Error Message PLATFORM_HCEF-3-ADJ: [chars]

Note This message applies only to the Catalyst 3750 and 3560 switches.

Explanation This message appears when an unsupported feature is configured on a switch running Cisco IOS Release 12.2(25)SE. [chars] is the error message.

Recommended Action Determine if a generic routing encapsulation (GRE) tunnel or the ip cef accounting global configuration command are configured. Only Distance Vector Multicast Routing Protocol (DVMRP) tunnels are supported. If the GRE tunnel is configured, remove the tunnel, or upgrade the switch software to a Cisco IOS release when the GRE feature is needed. If the ip cef accounting command is configured, remove it by using the no ip cef accounting global configuration command.

Note Cisco IOS Release12.2(25)SEB2 does not support the ip cef accounting command.

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

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Cisco Systems 3750 manual Platformhcef Messages, This section has the Cisco Express Forwarding CEF message

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.