My first blog on CCDE will be OSPF in the DataCenter, as this is a subject that I will be working on at my regular job in the coming months. I'm reading up on google pages, and listening to Orhan lectures on it, and reading the Cisco Press CCDE Study Guide, and must confess that … Continue reading OSPF in the DataCenter
Category: CCIE
CCDE Written Exam
I've had my CCIE for 5 years now. In order to renew my CCIE in the past, I either passed the CCIE written exam, or I used Cisco Learning credits. This time I'm considering going for the CCDE Written exam in order to renew my CCIE EI certification. Here are the requirements to renew the … Continue reading CCDE Written Exam
1.0 Network Fundamentals.20%. 1.3 Compare physical interface and cabling types 1.3.b Connections (Ethernet shared media and point-to-point)
Connections of ethernet shared media and point-to-point. When ethernet networking was in the beginning stages, coax was used and all the computers connected or "tapped" into the coax with another coax cable. The nics had a bnc connector. This was a shared media. After that, network hubs were used. This allowed the use of unshielded … Continue reading 1.0 Network Fundamentals.20%. 1.3 Compare physical interface and cabling types 1.3.b Connections (Ethernet shared media and point-to-point)
1.0 Network Fundamentals. 20%. 1.3 Compare physical interface and cabling types. 1.3.a Single-mode fiber, multimode fiber, copper.
In network engineering we use media to connect things together. There are basically 3 kinds of media, fiber, copper and wireless. Fiber media is made from glass or plastic. Back in the day, when I first started running fiber, there was one manufacturer, which was Corning. Now there are several more. Fiber optic cable uses … Continue reading 1.0 Network Fundamentals. 20%. 1.3 Compare physical interface and cabling types. 1.3.a Single-mode fiber, multimode fiber, copper.
CCIE Enterprise Infrastructure Blueprint
CCIE Enterprise Infrastructure (v1.0) Exam Topics – Practical ExamExam Description: The Cisco CCIE Enterprise Infrastructure (v1.0)Practical Exam is an eight-hour, hands-on exam that requires acandidate to plan, design, deploy, operate, and optimize dualstack solutions (IPv4 and IPv6) for complex enterprise networks.Candidates are expected to program and automate the networkwithin their exam, as per exam topics … Continue reading CCIE Enterprise Infrastructure Blueprint
QoS
QoS, or quality of service is a very large subject. What is QoS and why is it needed? QoS is the ability to provide different priority to different applications, users, or data flows, or to guarantee a certain level of performance to a data flow. Why is it needed? The root cause for QoS is … Continue reading QoS
IGP Redistribution Examples
I. RIP Redistribution Principles 1. Doesn't differentiate between internal and external routes. a. Administrative Distance of 120 for all routes.2. No default seed metric.a. Command to redistribute is "redistribute [protocol] metric [hops]b. Command to set the default-metric is "default-metric [hops] II. EIGRP Redistribution Principles 1. AD of 170 for external EIGRPa. Helps to automatically prevent … Continue reading IGP Redistribution Examples
Before continuing on with redistribution, some more basics:
I. The reason for redistribution is because each protocol has different route advertisement rules. A. RIP, EIGRP, OSPF, and BGP use different rules so routes will not advertise from one protocol to another protocol without redistribution. II. Redistribution occurs in the routing table (RIB) with the "show ip route" output. It does not occur in … Continue reading Before continuing on with redistribution, some more basics:
Moving from packet tracer to gns3
Update: I’ve been labbing with packet tracer and decided to go back to gns3 again. Packet tracer has a lot of commands that are missing. I want to post a blog on advanced redistribution issues and I could not create a prefix list in packet tracer, among some other commands that were making it a … Continue reading Moving from packet tracer to gns3
Redistribution Basics
LEFT#sh run | s r e router eigrp 1 redistribute ospf 1 metric 1000 100 255 1 1500 network 172.16.0.0 0.0.0.3 LEFT#sh run | s r o router ospf 1 router-id 10.0.0.1 log-adjacency-changes redistribute eigrp 1 subnets LEFT#