CCNA,CCNP,CCIE Blogs

You’re feeling pretty confident in your understanding of Cisco’s Enhanced Interior Gateway Routing Protocol (EIGRP), but then somebody mentions something called EIGRP named mode configuration, or possibly even Named EIGRP, and suddenly you’re all like …..?!? CCNP candidate is required to have at least a passing knowledge of EIGRP named mode and how it differs from classic EIGRP. Classic EIGRP, which is also referred to as   EIGRP Autonomous System (AS) mode , is how most people think of EIGRP. A simple classic EIGRP configuration begins with he ever-familiar  router eigrp   autonomous-system  command, where  autonomous-system  is a value between 1 and 65535. You can use the context-sensitive help functionality in IOS to confirm the command syntax as shown below: R12.4(config)# router eigrp   ?     <1-65535>   Autonomous system number The output in the previous example is from a router running IOS 12.4. As you can see, this particular version of IOS supports EI

Routing Meaning and Objectives Routing is a process by which an information, packet is sent from one location to another location. This process is performed by a hardware device called Router. Routers thus route traffic to all the networks in your Internet work. In order to route packets containing information, a router needs to know the following key information:  Destination address  Information sources  Possible routes  Best routes  Routing information maintenance and verification- A way of verifying that the known paths to destination are valid and are the most current. The Types Of Routing – 1. Static Routing          2. Dynamic Routing Static routing - Network Administrator Configures Information About Remote Network Manually. they are used to reduce overhead and for security .this types of routing is ideal for small networks. Administrator manually update static route entry, whenever an internet work topology requires a change or during link fai

1) What is Routing? Routing is the process of finding a path on which data can pass from source to destination. Routing is done by a device called routers, which are network layer devices. 2) What is the purpose of the Data Link? The job of the Data Link layer is to check messages are sent to the right device. Another function of this layer is framing. 3) What is the key advantage of using switches? When a switch receives a signal, it creates a frame out of the bits that was extracted from that signal. With this process, it gains access and reads the destination address, after which it forwards that frame to the appropriate port. This is a very efficient means of data transmission, instead of broadcasting it on all ports. 4) When does network congestion occur? Network congestion occurs when too many users are trying to use the same bandwidth. This is especially true in big networks that do not resort to network segmentation. 5) What is a Window in networking terms?

This short post will show you how to upgrade the software on a single Cisco 3850 switch or a 3850 stack, using TFTP and USB. The process is very easy but it is a bit different than the usual software image of previous switches i.e 3750 etc. The main difference is the Cisco 3850 switch run IOS-XE so you have to copy the .bin file to the flash on the switch and then install the software on the switch. Download the required image from cisco.com Begin the install Reboot the switch Step 1 copy the new image to the 3850 3850-SW1# copy tftp flash Address or name of remote host []? 10.1.1.100 Source filename []? cat3k_caa-universalk9.SPA.03.03.01.SE.150-1.EZ1.bin Destination filename [cat3k_caa-universalk9.SPA.03.03.01.SE.150-1.EZ1.bin]? Accessing tftp://10.1.1.250/cat3k_caa-universalk9.SPA.03.03.01.SE.150-1.EZ1.bin… Loading cat3k_caa-universalk9.SPA.03.03.01.SE.150-1.EZ1.bin from 10.251.226.253 (via Port-channel1): !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!