CEF stands for Cisco Express Forwarding, and it is a mechanism of organizing the routing table and the related frame rewrite information in a way that allows for very efficient and fast routing information lookup. CEF can be implemented either in software or using specialized hardware circuits. For more information about router switching paths including CEF, read the following document:
An ASIC stands for "Application Specific Integrated Circuit". As the name suggests, an ASIC is a specialized piece of hardware circuitry designed to perform a particular operation in a highly efficient way. For example, you may have an ASIC that performs encryption and decryption. Or you may have an ASIC that is responsible for filtering frames based on their MAC addresses. An ASIC can be used, for example, to compute and verify checksums of frames, packets, perform NAT, compression and decompression of data, encode and decode video and audio, etc. ASICs are always optimized to perform a single particular operation, and hence they are not universal. That is why there is no single documentation on ASICs simply because there is no universal ASIC. General information exists, of course, e.g.:
Hi Guys, I have two questions about EIGRP behavior when we have Multiple EIGRP routes: 1- I tried to show on some router the acquired EIGRP paths for a route X.X.X.X by typing the command : "show ip eigrp topology X.X.X.X". On the output there w...
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To provide a solution to quickly setup a router at a remote location that supports WiFi and provides instant internet access using LTE as a transport while deploying with Cisco SD-WAN.
Plug the router to a power sou...
Hello!I'm looking for a way to make my EEM script more dynamic and automated for my environment. This is what I have - basically I just capture the 4 IPSec peer IP addresses of each neighbor and insert this data into 4 different variables. ...
Hi all,I have a couple of Nexus9k switches. I need to get tcpdump from the physical interface which connected to the server. I'm looking for a specific protocol on tcpdump so that which feature should I use? I asked that because I couldn't full...