Extreme Networks ExtremeWare XOS Guide Manual page 465

M (continued)
member VLAN
MIB
mirroring
MMF
MSM
MTU
multicast
multinetting
ExtremeWare XOS 11.1 Concepts Guide
In ESRP, you configure zero or more member VLANs for each ESRP
domain. A member VLAN can belong to only one ESRP domain. The
state of the ESRP device determines whether the member VLAN is in
forwarding or blocking state.
Management Information Base. MIBs make up a database of
information (for example, traffic statistics and port settings) that the
switch makes available to network management systems. MIB names
identify objects that can be managed in a network and contain
information about the objects. MIBs provide a means to configure a
network device and obtain network statistics gathered by the device.
Standard, minimal MIBs have been defined, and vendors often have
private enterprise MIBs.
Port mirroring configures the switch to copy all traffic associated with
one or more ports to a designated monitor port. The monitor port can
be connected to an network analyzer or RMON probe for packet
analyzer.
Multimode fiber. MMF is a fiber optic cable with a diameter larger
than the optical wavelength, in which more than one bound mode can
propagate. Capable of sending multiple transmissions simultaneously,
MMF is commonly used for communications of 2 kilometers or less.
Master Switch Fabric Module. This Extreme Networks-proprietary
name refers to the module that holds both the control plane and the
switch fabric for switches that run the ExtremeWare XOS software.
One MSM is required for switch operation; adding an additional MSM
increases reliability and throughput. Each MSM has two CPUs. The
MSM has LEDs as well as a console port, management port, modem
port, and compact flash; it may have data ports as well. The MSM is
responsible for upper-layer protocol processing and system
management functions. When you save the switch configuration, it is
saved to all MSMs.
Maximum transmission unit. This term is a configurable parameter
that determines the largest packet than can be transmitted by an IP
interface (without the packet needing to be broken down into smaller
units).
Note: Packets that are larger than the configured MTU size are
dropped at the ingress port. Or, if configured to do so, the system can
fragment the packet and reassemble it at the receiving end.
Multicast messages are transmitted to selected devices that specifically
join the multicast group; the addresses are specified in the destination
address field. In other words, multicast (point-to-multipoint) is a
communication pattern in which a source host sends a message to a
group of destination hosts.
IP multinetting assigns multiple logical IP interfaces on the same
circuit or physical interface. This allows one bridge domain (VLAN) to
have multiple IP networks.
M
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