is sent to a host using TCP or UCP protocol, the host must run a SYSLOG Program . There are third-party software in UNIX and windeow systems (kiwi Syslog daemon is good ).Refer to the configuration manual for Cisco PIX Firewall and VPN to configure syslog. You can set the log message sending method, such as email, sen
Logging Cisco device logs using syslogThe following configuration describes how to send logs from a Cisco device to a syslog serverDevice#conf TDevice (config) #logging onDevice (config) #logging the IP address of the A.B.C.D//log serverDevice (config) # logging facility Local1Facility identification, RFC3164 the local device identification specified as LOCAL0-LO
First, start the log service
(1) Start log logging on
Note: by de fault, the logging level was set to 3 (error).
The default log level is 3 (error)
(2) Set log level logging Trap Severity_level (1-7)
(3) Check log settings show logging
second, test log output
Test the log information output by following these steps:
(1) Log information is sent to the console port.
Logging Console 7
Quit
This test will generate the following
Network administrators often need to connect to a vro to perform configuration verification, and statistical data review on the Cisco router. There are many methods to connect to a Cisco router, such as configuring a port, a secondary port, or using Telnet. However, I like to connect to the vro through the Console
Network address port Conversion NAPT is a very familiar way of transformation. NAPT is commonly used in access devices, which can hide small and medium-sized networks behind a legitimate IP address.Unlike dynamic address NAT, NAPT maps An internal connection to a separate IP address in the external network, adding a TCP port number selected by the NAT device to the address.This time, let's get to know napt.
The main function of Port-channel in practical work is to bundle two or more ports into a virtual channel.Interface Port-channel1Description Port (1/0/5-6)Switchport Trunk Encapsulation dot1qSwitchport Trunk allowed VLAN 10Switchport mode Trunk!Interface Port-channel2Description Po
The main function of Port-channel in practical work is to bundle two or more ports into a virtual channel.Interface Port-channel1Description Port (1/0/5-6)Switchport Trunk Encapsulation dot1qSwitchport Trunk allowed VLAN 10Switchport mode Trunk!Interface Port-channel2Description Po
The implementation of the multi-port Cisco switch module is a common problem. How to configure the Cisco switch module, any problems related to ports will be fully resolved in this article.
Cisco switch module adaptive 1/2 Gbps interface: provides high-performance connections and is compatible with existing devices. IS
Introduction to Cisco Port Channel)Port trunking is used to bind multiple low-bandwidth ports of a vswitch to a high-bandwidth link to achieve load balancing. Avoid link congestion. Through configuration, You can bind two or four ports to forward data on specific ports to prevent packet loss when the forwarding rate of a single link is too low. Advantages of Trun
(config) #no monitor session 1Switch (config) #endSwitch#wrSwitch#show MonitorNo SPAN configuration is present in the system.3. Other(1) Port image filtering, port mirroring can do filter.Monitor session session_number Filter VLAN Vlan-id [, |-]* * Specifies which VLANs belong to the traffic that the source port is entering, and can be emitted from the destinati
The following is a brief analysis of the port security function of a Cisco switch. It is taken from the recently published Cisco/H3C switch advanced configuration and management technical manual. The Port security function in the Cisco IOS switch limits the number of MAC add
In the middle of a Cisco switching network, how do I find out which port of the switch is connected to the IP address of a machine? The most convenient and quick way is to use the User tracking function of the CiscoWorks 2000 LMS network management software. The graphical interface is clear at a glance.
If you do not have this software, you can use the following manual analysis method to find the answer:
Ex
Port security Configuration for the Cisco PT Simulation Experiment (7) switchExperimental Purpose : Master the port security function of the switch, control the user's secure accessExperimental Background : The company network adopts the personal fixed IP Internet program, in order to prevent the company internal User IP address borrowing, using, unauthorized acc
For enterprise users, multi-device port access control can optimize the network more reasonably. Here we analyze in detail how to configure a Cisco router to implement this function. You only need a CISCO router with an asynchronous module or a router with a built-in asynchronous serial port.
You can enjoy full contro
CISCO PT Simulation Experiment (2) port configuration and management for switchesExperimental Purpose : Master the basic configuration and management of the switch, and understand the basic commands of the switch configuration.Experimental background : A company has a new batch of two-layer switch, before formally put into use to initialize the configuration and management, in order to maintain later.Techni
Cisco PT Simulation Experiment (5) port aggregation configuration for switchesExperimental Purpose :Understanding Port Aggregation FundamentalsMaster the configuration method of general switch port aggregationExperimental Background : The company's finance department and the sales department of the PC through 2 switche
The port rate between switches and switches, between switches and routers, does not meet the actual rate and requires tying more than two ports together to load balance and prevent single points of failure.1. Select Switch SW2960 to configure the F0/1 and F0/2 port modes to truck#conf Terminal into privileged mode#interface Range Fa0/1–2 used to bind a set of ports and enter the
The console port is a port for each network management device. By default, authentication is not performed and plug-and-play is enabled. To ensure security, we can authenticate the console port, there are two authentication methods: 1. password 2. user name + Password
Take Cisco configuration as an example:
1. Passwo
Server, web server, email server, network device, SQL Server, file server, and printer.
3. view all network devices in one graph
Prtg network monitor can be used to monitor network devices, classify these devices, and view them in a unified graph. In other words, in a graph, you can immediately view the alarms, CPU loads, and response times displayed on the Windows network.
4. Use email or short message service to send a warning
5. Monitor applications on the network and other servers, such as
Cisco PT Simulation Experiment (5) port aggregation configuration for switchesExperimental Purpose :Understanding Port Aggregation FundamentalsMaster the configuration method of general switch port aggregationExperimental Background : The company's finance department and the sales department of the PC through 2 switche
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