A DTE is a Host computer system and the DTE main DTE signals are
DCE signals are
Some devices auto sense the signals from the DTE Host and can change their orientation. That is why it works with a straight as well as a rolled cable. However you should always try to use the proper cabling for not all interfaces on all devices are auto-sensing....
If we take this question to the physical level, routers, wireless access point Ethernet ports, and PC NICs all send using pins 1 and 2, whereas hubs and switches send using pins 3 and 6. Straight-through cables are used when connecting devices that use the opposite pairs of pins to transmit data (Tx to Rx and Rx to Tx), if the devices are the same (use the same pins for Tx and Rx) then we must use a cross-over cable to cross the transmission.
And as Edison pointed out, before Auto-MDIX, we had to use a crossover cable to connect a switch to a switch, with Auto-MDIX there is only one thing to consider, if speed/duplex are manually configured Auto-MDIX is disabled, and we'll have to use a crossover cable.
NOTE the 2960 does support the auto-MDIX feature and it is enabled by default
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
Introduction Featured Speakers Luis Espejel is the Telecommunications
Manager of IENova, an Oil & Gas company. Currently he works with Cisco
IOS® and Cisco IOS XE platforms, and NX to some extent. He has also
worked as a Senior Engineer with the Routing P...
In this session you can learn more about Layer 3 multicast and the best
practices to identify possible threats and take security measures. It
provides an overview of basic multicast, the best security practices for
use of this technology, and recommendati...