G–1
Glossary
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Active
In a failover solution, it refers to the device that
is currently in use.
ActiveUpdate
ActiveUpdate server. The Trend Micro server
hosting the Network VirusWall Enforcer 2500
components. The ActiveUpdate server can be
set as the update source.
Baseboard management controller
Short for BMC. It is a microcontroller responsible
for the Intelligent Platform Management Inter-
face (IPMI).
BMC logs
Short for Board Management Control logs.
These type of logs report critical hardware status
and error.
BPDU
Short for
b
ridge
p
rotocol
d
ata
u
nit. BPDUs are
data messages that travel across the switches
within an extended LAN that uses a spanning
tree protocol topology. BPDU packets contain
information on ports, addresses, priorities and
costs and ensure that the data ends up where
the sender intended it to go. BPDU messages
go back and forth across bridges to detect loops
in a network topology. The protocol then
removes the loops by shutting down selected
bridge interfaces and places redundant switch
ports in a backup, or blocked, state.
Client
Refers to an IP address, which Network
VirusWall Enforcer 2500 scans for unwanted
packets.
Device role
A device identifies its role after assigning the
original attribute setting (Primary or Secondary).
DHCP
Short for Dynamic Host Configuration Protocol,
a protocol for assigning dynamic IP addresses to
devices on a network. With dynamic addressing,
a device can have a different IP address every
time it connects to the network. In some sys-
tems, the device's IP address can even change
while it is still connected. DHCP also supports a
mix of static and dynamic IP addresses.
DIMM
Short for dual in-line memory module, a small
circuit board that holds memory chips. A single
in-line memory module (SIMM) has a 32-bit path
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