Guest Shell (5.2.b)

Not to be confused with Cisco IOS shell ( that provides shell scripting capability to the Cisco IOS command-line-interface (CLI). Guestshell is a virtualized Linux-based environment, designed to run custom Linux applications, including Python for automated control and management of Cisco devices. It also includes the automated provisioning (Day zero) of systems. This container shell … Read more now..

EEM Applets (5.2.a)

Embedded Event Manager (EEM) provides real-time event detection and automation directly on Cisco IOS, IOS-XR and NX-OS platform. EEM offers the ability to monitor events and take informational, corrective, or any desired EEM action when the monitored events occur or when a threshold is reached. EEM provides a flexible, policy-driven framework that supports in-box monitoring … Read more now..

Cisco Shell

Cisco IOS shell ( provides shell scripting capability to the Cisco IOS command-line-interface (CLI).  Cisco enhances the process of controlling and configuring an IOS router using the CLI by including, variable substitution, paths, conditional statements, loops, pipes, functions, etc. Lets cover some of the features and how we enable it, it’s disabled by default. Prerequisites … Read more now..

MPLS LDP – IGP Synchronization

In certain networks, for example; Multiprotocol Label Switching (MPLS) Virtual Private Network (VPN) applications rely upon Label Switched Paths (LSP’s) set up by Label Distribution Protocol (LDP), in these networks, it is possible for the IGP to become operational on a link on which LDP is not resulting in labeled traffic being blackholed. IP packets could still … Read more now..

Juniper Online Proctored Exam (OP)

Juniper Networks Certification Program team is now offering an online proctored (OP) exam option that will allow candidates to conveniently and easily take an associate-level written exam in the comfort of their home or office while being monitored by an offsite proctor. While this was originally open just for Associate-level exams the Juniper Networks Certification … Read more now..

IPv6 Fundamentals

Well-known IPv6 multicast addresses Source address is always unicast Router Advertisement(ICMPv6 type 134): Advertisements are sent periodically, every 200 seconds (cisco). They are also sent immediately as a response to a Router Solicitation message originated by an end host. Router Solicitation(ICMPv6 type 133): Sent upon an interface of a node being enabled (FF02::2). Redirect(ICMPv6 type … Read more now..

Serial Interfaces (HDLC/PPP)

Serial interfaces can have different types of encapsulations and each encapsulation type determines the kind of keepalives that will be used. Enter the keepalive command in interface configuration mode in order to set the frequency at which a router sends ECHOREQ packets to its peer, keepalives can also be disabled with the “keepalive 0″ or … Read more now..

Adding the FortiGate Firewall to VIRL

Cisco VIRL allows you to add support for 3rd Party VM’s. I’m going to show you how to add the FortiGate virtual appliance to VIRL. First of all you will need the FortiGate Virtual Machine from  We will be using the KVM image provided by Fortinet, other versions are available i.e. ESXi, Hyper-V, etc so make you get the … Read more now..

Cisco TrustSec Switch-to-Switch Link Security (Manual Mode)

MACsec is the IEEE 802.1AE standard for authenticating and encrypting packets between two MACsec capable devices. The Catalyst 3750-X and 3560-X switches support 802.1AE encryption with MACsec Key Agreement (MKA) on downlink ports for encryption between the switch and host devices. The switch also supports MACsec link layer switch-to-switch security by using Cisco TrustSec Network … Read more now..