Brocade Communications Systems Brocate Ethernet Access Switch 6910 - Manual (Page 1177)

Brocade 6910 Ethernet Access Switch Configuration Guide 1127
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Glossary and Acronyms
D
Link Aggregation
See Port Trunk.
LLDP
Link Layer Discovery Protocol is used to discover basic information about neighboring devices in
the local broadcast domain by using periodic broadcasts to advertise information such as device
identification, capabilities and configuration settings.
MD5
MD5 Message-Digest is an algorithm that is used to create digital signatures. It is intended for use
with 32 bit machines and is safer than the MD4 algorithm, which has been broken. MD5 is a
one-way hash function, meaning that it takes a message and converts it into a fixed string of digits,
also called a message digest.
MIB
Management Information Base. An acronym for Management Information Base. It is a set of
database objects that contains information about a specific device.
MSTP
Multiple Spanning Tree Protocol can provide an independent spanning tree for different VLANs. It
simplifies network management, provides for even faster convergence than RSTP by limiting the
size of each region, and prevents VLAN members from being segmented from the rest of the group.
MRD
Multicast Router Discovery is a A protocol used by IGMP snooping and multicast routing devices to
discover which interfaces are attached to multicast routers. This process allows IGMP-enabled
devices to determine where to send multicast source and group membership messages.
Multicast Switching
A process whereby the switch filters incoming multicast frames for services for which no attached
host has registered, or forwards them to all ports contained within the designated multicast VLAN
group.
MVR
Multicast VLAN Registration is a method of using a single network-wide multicast VLAN to transmit
common services, such as such as television channels or video-on-demand, across a
service-provider’s network. MVR simplifies the configuration of multicast services by using a
common VLAN for distribution, while still preserving security and data isolation for subscribers
residing in both the MVR VLAN and other standard or private VLAN groups.
NTP
Network Time Protocol provides the mechanisms to synchronize time across the network. The time
servers operate in a hierarchical-master-slave configuration in order to synchronize local clocks
within the subnet and to national time standards via wire or radio.