
Overview
115976-A Rev. A 1-7
Box-wide/Global Objects -- Objects that provide services uniformly to all slots of
a network device (box-wide); for example, TCP, SNMP, FTP, TFTP, NTP, and
TELNET. Some protocols, such as IP and OSPF have box-wide as well as
interface-specific objects. For example, IP contains BGP and OSPF, which in turn
contain other box-wide/globally configurable objects. When you add IP on an
interface, the BCC automatically finds, adds, and enables the box-wide/global IP
object with all default settings. The BCC can also enable any box-wide/global
objects that derive required attribute values from existing interface-level objects.
The root-level context,
box, contains all box-wide/globally configurable objects.
Board -- Typically a logic or circuit board dedicated to a particular task, such as
providing central or distributed processing for a network device, or providing an
interface to a specific network transmission medium. Each board typically resides
in a slot in a network device. Some boards contain other boards such as an RMON
probe or a Data Collection Module (DCM).
Slot -- A location as well as a physical and electrical means for attaching modules
to logic and power connections internal to a network device. Each slot in a Bay
Networks device typically accommodates a processor or interface module (board)
of some type.
Line -- (1) A physical (and on some devices, logical) circuit identified typically by
means of a slot, connector, media type, and (where applicable, such as with TI/E1
facilities) a channel number. (2) The lowest common denominator for identifying
a packet data stream.
Connector -- The physical and electrical means to interconnect an interface
module in a network device directly or indirectly to a physical network medium.
Port -- (1) See connector. (2) On a network device or a user endstation, a logical
point of termination for data sent or received by a specific protocol or application.
For example, a UNIX workstation receives syslog messages from a remote device
at UDP logical port number 162.
Interface -- (1)A datalink/physical layer connection to a physical network
transmission medium. (2) Any packet stream of a particular type. The BCC
identifies each interface by combining its name (such as ethernet, token ring, fddi,
sync, or hssi), a slot number (where the interface resides physically in the device
chassis), and a connector number (on the module occupying the designated slot).
Certain devices, such as ASN routers, extend this terminology to include other
objects necessary for identifying a specific interface. An interface includes
media-specific driver software.
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