Recently, Cisco's switching is needed because of work. Of course, it is also the technology of switching. Simple operations have been completed in general work, but recently it was found that network performance is very low in a large-scale integration test. If the test line is on one line, the other won't be able to run. Looking for someone from another ccnp department, we found that the loop in the settings appeared. However, after the loop is solved, it still cannot work. So it is in debug. In my spare time, I found Cisco was quite interesting. I had no time to read this project before, and now I decided to start learning this. At the same time, I began to record some data records I learned.
First, we will introduce fast Ethernet media types.
100 basetx
100baset2
100baset4
100 basefx
In 1982, IEEE standardized the Ethernet technology to 802.3. Subsequently, the technology type experienced rapid development and changes, from the 10base5 of the crude cable to the 10base2 of the fine cable, to 1base5 (a short backend), and the twisted pair 10 BaseT, and to the 100 basetx, 100baset4, 100 basefx, and basefx, which are transmitted over five categories of fast Ethernet, and then the Gigabit Ethernet interface, including short-wave long-light transmission 1000 basesx, long-wavelength optical transmission 1000 baselx, and five-class line transmission Baset. In July 18 this year, IEEE officially passed the 802.3ae: 10 Gbps Ethernet standard (also called 10-Gigabit Ethernet ),