Cabletron Systems FRM User Manual - page 382
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Frame Relay Module 4. 0 User G uide, Rev 01
Event
is a change in status in software or hardware operation (e.g., configuration, function,
operating state, performance, etc.), that is reported to automatic and specified destina-
tions within the network the FRM is on. This term is synonymous with “alarm.”
F
Fragment
is an IP datagram that is a piece of a larger datagram, the larger one having been seg-
mented to allow it to pass through a network that did not support the larger datagram.
(See “Fragmentation.”)
Fragmentation
is the breaking up of IP datagrams into smaller segments, to allow the datagrams to
pass through a network that does not support the full size. If IP fragments the data-
grams, they will be reassembled at the final destination; if another protocol fragments
them (for example, to pass through an X.25 network), they will be reassembled at the
other side of that network.
Frame
is a unit of data transmitted between OSI level 2 entities, and containing its own
control information for addressing and error checking.
Frame relay
is transmission of data in a format that combines level 2 and level 3 functionality, but
provides connection information only for level 2.
G
Gateway
is a port that provides access to a “foreign” network (one that is not part of the local
network).
H
HPAD
is an integral (to an FRM) SNA or BSC PAD connected to a host.
Hunt group
is a designated group of ports that share incoming calls according to a pre-defined
algorithm.
I
ICMP
stands for “internet control message protocol,” which handles IP error and control
messages. Gateways and hosts use ICMP to report problems concerning datagrams
back to the source.