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Switched Port Analyzer (SPAN and RSPAN)

By JMCristobal
marzo 9, 2022
Enterprise Infrastructure
SPAN (Switched Port Analyzer) is a feature that allows copying traffic from a source port or switch vlan to a destination port. In this article, we will discuss: ...
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Configurar AAA en Switch Cisco IOS

By JMCristobal
marzo 9, 2022
Enterprise Infrastructure
AAA – Authentication, Authorization, AccountingAuthentication: Who is the user?Authorization: What can the user do?Accounting: What did the user do? Cisco switches use two protocols for communication with AAA ...
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Configurar Port-Security en Switch Cisco

By JMCristobal
marzo 9, 2022
Enterprise Infrastructure
This feature controls the number of MAC addresses per port.The maximum number of MAC addresses per port can be configured (default is 1).The MAC addresses can be configured ...
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Configurar Storm Control en Cisco IOS

By JMCristobal
marzo 9, 2022
Enterprise Infrastructure
Storm control is a feature used to remedy broadcast, multicast, and unicast unknown overruns in the LAN network. Thresholds are configured, and action is taken if these thresholds ...
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Configuring SNMP on Cisco IOS

By JMCristobal
marzo 9, 2022
Enterprise Infrastructure
Simple Network Management Protocol (SNMP) Configuring SNMPv2C  The following commands are used to configure SNMPv2C: Switch(config)# snmp-server host host-address [ informs] version 2c community-string Switch(config)# snmp-server community string ...
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Configuring NTP on Cisco IOS

By JMCristobal
febrero 23, 2022
Enterprise Infrastructure
Network Time Protocol (NTP) is used for centralized synchronization of the date and time of devices. It works over UDP port 123.  NTP operation modes: Server: the device ...
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Cisco IOS commands

By JMCristobal
febrero 15, 2022
Enterprise Infrastructure
Commands Used to Monitor and Manipulate the CAM Table TaskDisplay all MAC addresses learned on a specific interfaceSwitch# show mac address-table dynamic interface type number Display the current ...
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Configurar Syslog en Cisco IOS

By JMCristobal
febrero 11, 2022
Enterprise Infrastructure
Syslog is a standard for logging messages describing important events on network equipment. These events are used for auditing to know what, when, and how the event happened. ...
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STP: Multiple Spanning-Tree

By JMCristobal
abril 1, 2021
Enterprise Infrastructure
MST is a standard published by the IEEE to create different STP instances for groups of VLANs to have more than one STP topology approaching the Cisco mechanisms ...
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STP: Configuración de Rapid PVST+

By JMCristobal
marzo 29, 2021
Enterprise Infrastructure
The iEEE 802.1w standard was developed using the main concepts of 802.1d (Common Spanning-Tree) but with a faster convergence time. It can be applied to single or multiple ...
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STP: Features de protección

By JMCristobal
marzo 25, 2021
Enterprise Infrastructure
Root Guard The Root Guard feature was developed as a means to control when a candidate root bridge switch connects to the network. It records the bridge ID ...
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STP: Métodos de optimización

By JMCristobal
marzo 22, 2021
Enterprise Infrastructure
Some additional methods allow faster STP convergence if a link failure occurs. Portfast Allows fast connectivity on ports by immediately switching to the Forwarding state without going through ...
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STP: PVST+ configuration

By JMCristobal
marzo 15, 2021
Enterprise Infrastructure
PVST+ (Peer-VLAN Spanning-Tree) First of all, let’s remember: Common spanning-Tree (CST) only handles one instance of STP on switches, based on 802.1Q trunks, by default over vlan 1 ...
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STP – Timers, Port Roles and States

By JMCristobal
marzo 11, 2021
Enterprise Infrastructure
Choosing root ports Once the root bridge is chosen, a Root Port must be chosen for each switch, which is not the root bridge. The root port always ...
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STP Overview

By JMCristobal
marzo 8, 2021
Enterprise Infrastructure
Spanning-Tree Protocol can exist between two devices (switches). Multiple active paths between devices cause loops in the network. STP is a layer 2 link management protocol that provides ...
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This website is free and educational. Contains my thoughts and ideas, which may not represent the thoughts of the various technologies mentioned here. All product names, logos, and illustrations are copyright/trademarks of their respective owners.
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