Cisco Flex link
Introduction Flex link is a Cisco solution which replaces STP in certain network topologies. It works by detecting link down […]
Ethernet
Ethernet
Convergence, Ethernet
Resilient Ethernet Protocol (REP)
Introduction I’m writing a short summary of REP as part of my CCDE studies. REP is an alternative protocol used
Convergence, Ethernet
Detecting Network Failure
Introduction In todays networks, reliability is critical. Reliability needs to be high and convergence needs to be fast. There are
CCIE, Ethernet
The history of Ethernet – DIX vs 802.3
I’m planning to do a post on BPDUs sent by Cisco switches and analyze why they are sent. To fully
CCIE, Ethernet, Notes
Ethernet – notes
RJ 45 pinouts 10-BASE-T and 100BASE-TX uses pairs two and three, gigabit Ethernet uses all four pairs. Pinout for straight
Ethernet
The facts of Ethernet – Round three
The previous post talked about autonegotiation. This time I will talk about cables and pinouts and how auto MDIX works.
Ethernet
The facts of Ethernet – Round two
Autonegotiation – Either you love it or you hate it but pretty much everyone has an opinion on it. I
Ethernet
The facts of Ethernet round one
Ethernet is the most used layer 2 protocol today and it’s dominance is not likely to end anytime soon. I