Glossary
GL-2
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
OL-14127-08
M
MAC
media access control. Lower of the two sublayers of the data link layer defined by the IEEE. The MAC
sublayer handles access to shared media.
MIB
Management Information Base. Database of network management information that is used and
maintained by a network management protocol such as SNMP or CMIP. The value of a MIB object can
be changed or retrieved using SNMP or CMIP commands, usually through a GUI network management
system. MIB objects are organized in a tree structure that includes public (standard) and private
(proprietary) branches.
O
OIR
online insertion and removal. Feature supported by SIPs and SPAs allowing removal of the cards while
the router and the cards are activated, without affecting the operation of other cards or the router.
Although this removal can be done while the SIP or SPA is activated, it is generally recommended that
you gracefully deactivate the hardware using the appropriate commands for your platform prior to
removal of the hardware.
P
PPP
Point-to-Point Protocol. A link-layer encapsulation method for dialup or dedicated circuits.
Q
QoS
quality of service. Measure of performance for a transmission system that reflects its transmission
quality and service availability.
S
SFP
small form-factor pluggable optical transceiver. A type of fiber optic receptacle device that mounts
flush with the front panel to provide network connectivity.
single height
Describes the dimension of a SPA that occupies a single SIP subslot, or half of the SIP.
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