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Showing posts from March, 2011

What is Carrier Ethernet

A New Ethernet ?
I was recently working with Cisco ASR9000s and when looking at the different line card options I came across the phrase "Carrier Ethernet", I didn't know if I had missed the mail shot telling me that the Ethernet Standard had changed.

From Cisco's ASR 9000 Series Ethernet Line Card data sheet "The Cisco ASR 9000 Series Line Cards together with the Cisco ASR 9000 Series platforms are designed to provide the fundamental infrastructure for scalable CarrierEthernet and IP/MPLS networks"

So what is CarrierEthernet? In its most simplistic form it is the ability to emulate  Ethernet services across the WAN. It makes more sense if instead of reading CarrierEthernet read Carrier Ethernet Services.





E-Line = Point to Point
E-LAN = Multipoint
ETree = Point to Multipoint

These topology definitions alone do not cover what Carrier Ethernet is; Carrier Ethernet include standards and SLAs that are required in essence so you can compare offerings from different Ser…