802.1Q Open standard that defines how multiple VLANs can be shared across a link between two switches.

ABR OSPF area border router. Connects one or more areas to the backbone area.

administrative distance A number ranking system to determine the most reliable routing table learning method or routing protocol.

AES-NI Advanced Encryption Standard New Instructions. CPU technology to allow for the offloading from the OS encryption-based computations.

ARP table Table created by the Switch Security Module to keep the IP-ARP mappings of each logical switch. The ARP table is populated by doing ARP snooping and DHCP snooping. Each ESXi host’s Switch Security Module sends a copy of its ARP entries to the NSX Controller.

ASBR OSPF autonomous system ...

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