24-Port Managed Gigabit Switch
M
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),
which 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 has been
seen after a configurable age time.
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 coping the frame.)
Both incoming (source) and outgoing (destination) frames can
be mirrored to the mirror port.
N
NetBIOS
NetBIOS is an acronym for Net
work Basic Input/Output System.
It is a program that allows applications on separate computers
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