Appendix A: Glossary
MAC Table: Switching of frames is based upon the DMAC address contained in the frame. The switch builds up a table that maps MAC addresses to switch ports for knowing which ports the frames should go to (based upon the DMAC address in the frame ). This table contains both static and dynamic entries. The static entries are configured by the network administrator if the administrator wants to do a fixed mapping between the DMAC address and switch ports.
The frames also contain a MAC address (SMAC address) that shows the MAC address of the equipment sending the frame. The SMAC address is used by the switch to automatically update the MAC table with these dynamic MAC addresses. Dynamic entries are removed from the MAC table if no frame with the corresponding SMAC address have been seen after a configurable age time.
MEP: MEP is an acronym for Maintenance Entity Endpoint and is an endpoint in a Maintenance Entity Group
MD5: MD5 is an acronym for
Mirroring: For debugging network problems or monitoring network traffic, the switch system can be configured to mirror frames from multiple ports to a mirror port. (In this context, mirroring a frame is the same as copying the frame.)
Both incoming (source) and outgoing (destination) frames can be mirrored to the mirror port.
MLD: MLD is an acronym for Multicast Listener Discovery for IPv6. MLD is used by IPv6 routers to discover multicast listeners on a directly attached link, much as IGMP is used in IPv4. The protocol is embedded in ICMPv6 instead of using a separate protocol.
MVR: Multicast VLAN Registration (MVR) is a protocol for Layer 2
The main reason for using MVR is to save bandwidth by preventing duplicate multicast streams being sent in the core network; instead the stream(s) are received on the MVRVLAN and forwarded to the VLANs where hosts have requested them.
NAS: NAS is an acronym for Network Access Server. The NAS is meant to act as a gateway to guard access to a protected source. A client connects to the NAS, and the NAS connects to another resource asking whether the client's supplied credentials are valid. Based on the answer, the NAS then allows or disallows access to the protected resource. An example of a NAS implementation is IEEE 802.1X.
NetBIOS: NetBIOS is an acronym for Network Basic Input/Output System. It is a program that allows applications on separate computers to communicate within a Local Area Network (LAN), and it is not supported on a Wide Area Network (WAN).
The NetBIOS gives each computer in the network both a NetBIOS name and an IP address corresponding to a different host name, and provides the session and transport services described in the Open Systems Interconnection (OSI) model.
NFS: NFS is an acronym for Network File System. It allows hosts to mount partitions on a remote system and use them as though they are local file systems.
NFS allows the system administrator to store resources in a central location on the network, providing authorized users continuous access to them, which means NFS supports sharing of files, printers, and other resources as persistent storage over a computer network.
NTP: NTP is an acronym for Network Time Protocol, a network protocol for synchronizing the clocks of computer systems. NTP uses UDP (datagrams) as a transport layer.
OAM: OAM is an acronym for Operation Administration and Maintenance. It is a protocol described in
Optional TLVs: A LLDP frame contains multiple TLVs. For some TLVs it is configurable if the switch shall include the TLV in the LLDP frame. These TLVs are known as optional TLVs. If an optional TLVs is disabled, the corresponding information is not included in the LLDP frame.
LGB5028A User‘s Manual | Page 221 | |
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