XO Communication has made several big Ethernet announcements already this year, and the carrier just announced another Ethernet move in choosing to deploy vendor Ciena's LE-311v Service Delivery Switch at its Ethernet hubs in 75 U.S. markets. The gear will play a key role in helping XO manage external network-to-network interfaces (E-NNI) at the points where other service providers connect to the XO hubs.
Having a reliable E-NNI function will help the carrier Ethernet market at large, because carriers can put their faith in their own customers' traffic moving over lines set up on other carriers' networks without threatening the service level agreements and reliability guarantees they have struck with their customers.
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XO earlier this year expanded and upgrade Ethernet offerings
Embarq bought Ethernet gear from Ciena earlier this year