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Configure EIGRP on the ASA Firewall

By JMCristobal
October 8, 2021
Security
Create an EIGRP routing process asa-jmcristobal(config)# router eigrp as-num Configure the interfaces and networks that participate in EIGRP routing: asa-jmcristobal(config-router)# network ip-addr [mask] We can configure one or ...
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Upgrade Firepower Threat Defense with FMC

By JMCristobal
September 14, 2021
Security
Equipment to be used: FMC 2600 with version 6.6.4FTD 2130 with version 6.4.0.10 The objective is to upgrade the FTD to version 6.6.4 through the FMC. Before you ...
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Cisco ASA Remote Management – SSH/ASDM

By JMCristobal
August 10, 2021
Security
By default SSH, telnet or https management is disabled. First of all we must have configured the management interface of the equipment, something similar to: ASA-JMCristobal# sh run ...
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EIGRP

By JMCristobal
May 10, 2021
Enterprise Infrastructure
EIGRP (Enhanced Interior Gateway Routing Protocol) is an advanced vector distance protocol, an enhanced version by Cisco’s proprietary Interior Gateway Routing Protocol (IGRP). EIGRP uses the same algorithm ...
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STP: Multiple Spanning-Tree

By JMCristobal
April 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: Rapid PVST+ configuration

By JMCristobal
March 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: Protection Features

By JMCristobal
March 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: Optimization methods

By JMCristobal
March 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
March 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
March 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
March 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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Etherchannel PAgP y LACP

By JMCristobal
February 19, 2021
Enterprise Infrastructure
The audio of the video is only in Spanish EtherChannels can be negotiated between two switches; there are two protocols for this negotiation: PAgP and LACP. PAgP (Port ...
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Etherchannel Overview

By JMCristobal
February 18, 2021
Enterprise Infrastructure
Etherchannel, also known as Link Aggregation, is a technology that allows grouping several physical interfaces that connect a pair of devices; when the etherchannel is established, the devices ...
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VTP – VLAN Trunking Protocol

By JMCristobal
February 11, 2021
Enterprise Infrastructure
VTP uses Layer 2 trunk links to communicate VLAN information within a group of switches. VTP manages the addition, deletion, and renaming of vlan names by sending VTP ...
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DTP – Dynamic Trunking Protocol

By JMCristobal
February 8, 2021
Enterprise Infrastructure
DTP is cisco’s proprietary protocol for negotiating trunking mode between two switches. A trunk link can only be negotiated between two switches if both belong to the same ...
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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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