Glossary
10GBASE-ER A single-mode fiber for up to 80 kilometers (extended range).
10GBASE-LR A single-mode fiber for up to 10 kilometers (long range).
10GBASE-SR A multimode fiber for up to 400 meters (short range).
20/80 rule A rule which says that 20% of traffic is local, and 80% of traffic is to servers in the data center.
5G An emerging wireless standard based on Release 15 Category NR from the 3GPP standards organization.
6RD (IPv6 Rapid Deployment) A tunnel mechanism that allows a service provider to provide unicast IPv6 service to its customers over its IPv4 network by using encapsulation of IPv6 in IPv4.
ABR (area border router) An OSPF router that is connected to more than one area.
access layer In the hierarchical network model, the ...
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