Data Centre Bridging: Enhancement of Simple Ethernet
DCB called as Data Centre Bridging is a set of protocols designed by IEEE 802.1. The
primary goal of this enhancement in the existing Ethernet is to allow it in data centre
purposes using the existing Ethernet fabric. The data centres are huge repositories of data.
These contain lots of computer systems and high speed, high capacity storage systems to
store and process data. Data centres are the backbone of all the industries that have some
IT needs. From websites to e-Commerce, each business has exclusive data centre to store
the data and information about its clients and servers. These data centres are so critical for
a business that hacking or damage in them might permanently destroy the business. Due to
this reason, replication and backup of the data stored in their systems is done from time to
time for emergency cases.
In order to make the data centres work with existing Ethernet network, some changes are
desired in it. The most important one is the reliability. Ethernet gives more priority to
performance than reliability. Due to this, if the network becomes busy, it can drop the
packets in order to make the network flow smooth and avoid congestion. This is highly
undesirable in data centres, as dropping even a single packet of data may corrupt whole
GB’s of data. The reliable transmission TCP is there, but using it is expensive that is
avoided. So, only alternative was to change and made some improvements in the existing
ones, so as to make the data centres work with existing network. To achieve this, data
centre bridging had been made as a solution.
For more info about data centre bridging, Carrier Ethernet click here.