Cisco ASA Active-Standby Configuration

Facebook0Twitter0Google+0Linkedin0Total0On my previous post I talked about Cisco ASA Active/Active configuration. In this post I will describe Active/Standby redundancy which is used much more frequently compared with the active/active scenario. ASA Active/Standby failover/redundancy means connecting two identical ASA firewall units via LAN cable so that when one device or interface fails then the second one will take over… Read More »

Site to Site VPN with Dynamic Crypto Map

Facebook0Twitter0Google+0Linkedin0Total0In this post I will talk about Hub-and-Spoke VPN with one dynamic and two static crypto-maps between Cisco routers. The scenario is as following: There is a central HQ site which will be the Hub of our VPN network and also two branch sites which will be the spokes in our VPN network (see diagram below). The central… Read More »

Configuring AnyConnect WebVPN on Cisco Router

Facebook0Twitter0Google+0Linkedin0Total0In this post I will explain how to configure WEB VPN (or sometimes called SSL VPN) using the Anyconnect VPN client on a Cisco 870 router. Web Based VPN has three Remote Access modes: Clientless – You connect to a web page portal from which you can have access to web based applications, File Sharing and Outlook Web… Read More »

Trunking Switch Cisco 3750 vs HP 5130

Facebook0Twitter0Google+0Linkedin0Total0For Switch Cisco ——Cisco C3750X——- ! interface Port-channe4 description EtherChannel connected to HP-5310 switchport trunk encapsulation dot1q switchport mode trunk switchport trunk native vlan 100 ! interface GigabitEthernet1/1/1 description EtherChannel connected to HP-5310 switchport trunk encapsulation dot1q switchport mode trunk switchport trunk native vlan 100 channel-group 4 mode active ! interface GigabitEthernet2/1/1 description EtherChannel connected to HP-5310 switchport… Read More »

Configure VLAN Trunking Protocol (VTP) in Cisco IOS Switch

Facebook0Twitter0Google+0Linkedin0Total0When you have dozens or more number of switches in your network, managing VLAN becomes difficult. VLAN Trunking Protocol (VTP) simplifies creation and management of VLANs in network. Before you configure VLANs, you need to understand the basics of VTP protocol. In this post, I will show steps to Configure VLAN Trunking Protocol (VTP) in Cisco IOS Switch.… Read More »

Configure LACP EtherChannel in Cisco IOS Switch

Facebook0Twitter0Google+0Linkedin0Total0Link Aggregation or Ether Channel is a technology which allows for two or more physical ports to combine into one logical port providing high availability and increased bandwidth. Link Aggregation Control Protocol (LACP) is a industry standard (IEEE 802.3ad) protocol that is used to bundle two or more links and can work with devices from different vendors. If… Read More »

Configure Inter VLAN Routing in Cisco Router

Facebook0Twitter0Google+0Linkedin0Total0 Communication between different VLANs require router or some form of routing. Routing between the VLANs can be done using layer 3 switch or use more popular form of inter-vlan routing called router on a stick. Layer 3 switches are pretty expensive which is the main reason why router on a stick configuration is popular. In this post,… Read More »

Understanding VLANs in Switching World

Facebook0Twitter0Google+0Linkedin0Total0VLAN (Virtual Local Area Network) is a logical LAN that have separate broadcast domain. VLAN is often called LAN virtualization. VLAN groups ports of the switch and each group are given different VLAN-ID and VLAN name. Before getting deep into VLANs, we need to have understanding of broadcast domains and collision domains. Understanding VLANs in switching world is… Read More »

Configure VLAN in Cisco Catalyst Switch 3750

Facebook0Twitter0Google+0Linkedin0Total0If you have basic understanding of VLANs in Switching World then you can easily configure VLANs in Cisco Catalyst switches. In this post, I will show steps to Configure VLAN in Cisco Catalyst Switch. Configure VLAN in Cisco Catalyst Switch The diagram below shows our scenario. There are two switches, Switch1 and Switch2. We will create VLAN 2… Read More »

Configure Inter VLAN Routing in Cisco Router

Facebook0Twitter0Google+0Linkedin0Total0Communication between different VLANs require router or some form of routing. Routing between the VLANs can be done using layer 3 switch or use more popular form of inter-vlan routing called router on a stick. Layer 3 switches are pretty expensive which is the main reason why router on a stick configuration is popular. In this post, I… Read More »

Manage User Accounts and Passwords in Cisco IOS Devices

Facebook0Twitter0Google+0Linkedin0Total0Managing user Accounts and passwords in Cisco IOS Devices is very important task. With several different user accounts, you can also set different privilege level for each one of them. Different privilege means different available commands that can be executed per user account. In this article, we will go deep on creating users accounts and all its features… Read More »

Understanding Basics of EIGRP Routing Protocol

Facebook0Twitter0Google+0Linkedin0Total0Enhanced Interior Gateway Routing Protocol (EIGRP) is an advanced dynamic routing protocol that is used for routing decisions and configuration on the routers. EIGRP was developed by Cisco Systems as a proprietary protocol, which can be used only on Cisco routers but in 2013 partial functionality of EIGRP was converted to an open standard. EIGRP only sends incremental… Read More »