Chapter 2 System Message Overview

How to Read System Messages

Table 2-3

Representation of Variable Fields in Messages

 

 

 

Representation

 

Type of Information

 

 

 

[dec]

 

Decimal integer

 

 

 

[char]

 

Single character

 

 

 

[chars]

 

Character string

 

 

 

[enet]

 

Ethernet address (for example, 0000.FEED.00C0)

 

 

 

[hex]

 

Hexadecimal integer

 

 

 

[inet]

 

Internet address

 

 

 

All syslog messages generated by a Catalyst 3750 and 2975 switch other than the master switch are displayed ending with (Switch-x) where Switch-xis the number of the stack member generating the message. Syslog messages generated by the master switch are displayed with no hostname string.

This example shows a partial switch system message on a switch other than a Catalyst 3750 and

2975 switch:

00:00:46: %LINK-3-UPDOWN: Interface Port-channel1, changed state to up

00:00:47: %LINK-3-UPDOWN: Interface GigabitEthernet0/1, changed state to up

00:00:47: %LINK-3-UPDOWN: Interface GigabitEthernet0/2, changed state to up

00:00:48: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to down

00:00:48: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet0/1, changed

state to down 2 *Mar 1 18:46:11: %SYS-5-CONFIG_I: Configured from console by vty2 (10.34.195.36)

18:47:02: %SYS-5-CONFIG_I: Configured from console by vty2 (10.34.195.36)

*Mar 1 18:48:50.483 UTC: %SYS-5-CONFIG_I: Configured from console by vty2 (10.34.195.36)

This example shows a partial switch system message for a stack master and a stack member switch (hostname Switch-2) in a Catalyst 3750 switch stack or a Catalyst 2975 switch stack:

00:00:46: %LINK-3-UPDOWN: Interface

Port-channel1, changed

state to up

00:00:47: %LINK-3-UPDOWN: Interface

GigabitEthernet1/0/1,

changed state to up

00:00:47: %LINK-3-UPDOWN: Interface

GigabitEthernet1/0/2,

changed state to up

00:00:48: %LINEPROTO-5-UPDOWN: Line

protocol on Interface

Vlan1, changed state to down

00:00:48: %LINEPROTO-5-UPDOWN: Line

protocol on Interface

GigabitEthernet1/0/1, changed

state

to down 2

 

 

*Mar

1 18:46:11: %SYS-5-CONFIG_I: Configured from console

by vty2 (10.34.195.36)

18:47:02: %SYS-5-CONFIG_I: Configured from console by vty2

(10.34.195.36)

*Mar

1 18:48:50.483 UTC: %SYS-5-CONFIG_I: Configured from

console by vty2 (10.34.195.36)

00:00:46: %LINK-3-UPDOWN: Interface Port-channel1, changed state to up (Switch-2)

00:00:47: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/1, changed state to up (Switch-2)

00:00:47: %LINK-3-UPDOWN: Interface GigabitEthernet1/0/2, changed state to up (Switch-2)

00:00:48: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan1, changed state to down (Switch-2)

00:00:48: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/1, changed state to down 2 (Switch-2)

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

2-6

OL-8551-04

 

 

Page 16
Image 16
Cisco Systems 3750 manual Type of Information

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.