These are questions, I was able to answer and help others across various different social media boards. The reason behind why I love to help others with tech/networking engineer questions is to share what I’ve learned or currently learning. Note: Please feel free to correct me by leaving a comment below. For anonymity I will … More Questions & Answers: Series 1
Introduction The way BGP advertises routes to peers is via network command. However unlike other IGP(e.g OSPF , EIGRP etc) which summerises the entire network. For example to advertise and summarise an entire /16 network in an IGP (ospf in our example) you would use the following network command: 255.255.255.255 – 255.255.0.0 = 0.0.255.255 RouterA(config-router): … More BGP: Create non-existent entry in CP RIB to advertise entire subnet.
Even though the control plane isn’t effective at forwarding, can it still used to route? Under special circumstances Yes! such as control plane policing(QoS). A better example and my favourite is PBR. Let’s dive into a CCIE EL topic- PBR(Policy Based Routing) All forwarding is done by data plane however, under some circumstances, the control … More Control Plane Routing: PBR Policy Based Routing Part 1
Introduction In traditional networking Inside our router or multilayer switch there is a separation of duties. In order to fully understand these different duties one needs to understand, what happens when a packet enters our ingress and exits the egress interfaces? We must also get a dynamic overview between forwarding and routing. However before we … More Separation of Duties: Control Plane & Data Plane: Part 1
Did you know that a router Can Foward Ethernet Frames just like a switch? Did you know that a router Can Foward Ethernet Frames just like a switch? If packet arrives at router- with the destination address of the encapsulated Ethernet destination field same as the router’s address. It either means the Ethernet frame arrived … More Routers, FIBS and Adjacency’s
Are You Studying for CCNA/CCNP Certification & Using A Physical Lab? Automate On-Boarding Cisco Legacy IOS Devices Before I begin this write-up on this python code. I would like provide you with brief background regarding the out-of-box on-boarding process for modern IOS devices. With iOS-XE/XR and NX-OS, they have on-box python shell. This allows you … More IOS: Automate Through Serial Console Port!
Overview: Layer 3 Spine and Leaf The hardware used in my Homelab: Spine and leafs: Cisco 3750X/Cisco 3850/Cisco 3650x. Cisco Router 2921 as boarder leafs. Servers: HPE ProLiant DL 360P G8, HPE ProLiant DL 380P G9 and HPE ProLiant 360P G7 The code to my entire home lab fabric can be found on my GitHub … More Spine and Leaf datacenter style Home Lab