HP Cisco MDS 8/12c HP Virtual Connect: Common Myths, Misperceptions, and Objec - Page 30

Appendix B: Definitions Table 1. Definitions Term ACL (VACL) BPDU CX-4 DAC Downlink External Network FlexNICs (Physical Functions) Flex-10 NIC Port Hypervisor Internal Cross-Connect LACP LAG LLDP Logical Path LOM NAT NPIV Port Trunk (Channel Group) Quality of Service (QoS) Definition Access Control List or VLAN Access Control List: A set of rules that allows or disallows network traffic to flow between network devices Bridge Protocol Data Unit: A spanning tree configuration frame exchanged between switches in the same spanning tree domain An industry standard cabling specification used by VC for network connectivity using 10Gb Ethernet over copper. Direct Attached Cable: A copper cable with SFP+ transceivers directly attached. An internal port (enclosure midplane) on an Interconnect Module (blade switch or Virtual Connect) that directly connects to a server blade's NIC port. The network and associated network devices external to the VC domain One of four virtual NIC partitions available per Flex-10 Nic port. Each capable of being tuned from 100Mb to 10Gb. Only supported with Virtual Connect Flex-10 I/O modules. A physical 10Gb port that is capable of being partitioned into 4 Flex NICs. Only supported with Virtual Connect Flex-10 I/O modules. A virtual machine hypervisor such as VMware ESX, Microsoft Hyper-V, Citrix XenServer, etc. A non-visible port that interconnects two horizontally adjacent VC-Enet modules Link Aggregation Control Protocol (IEEE 802.3ad): A link aggregation configuration frame exchanged between two devices that form a logical port trunk/channel between them. Link Aggregation Group: 802.3ad terminology for a port trunk/channel group. Link Layer Discovery Protocol. An IEEE 802.1ab protocol that provides CDP-like functionality A single physical port or a single port channel. Both represent a single communication path. LAN on Motherboard. A NIC embedded on the system board of a server. Network Address Translation: A feature that allows a network device (such as a switch or router) to replace/rewrite addresses within a frame with a different address. N-Port ID Virtualization: ANSI T11 feature for Fibre Channel that allows multiple WWNs to login to the fabric over a single N-Port. A group of two or more ports that operate as a single logical port and single logical path for the purposes of load balancing. 802.3ad and EtherChannel are both port trunking technologies . A very broad term associated with network traffic 30