Cisco XR 12000 Series - Manual (Page 141)

GL-5
Cisco XR 12000 Series Router SIP and SPA Hardware Installation Guide
OL-17438-04
G L O S S A R Y
D
double height Describes the dimension of a SPA that occupies two, vertically-aligned SIP subslots.
F
FPD Field-programmable device. General term for any hardware component implemented on router cards
that supports separate software upgrades. SIPs and SPAs must have the right FPD version to function
properly; an FPD incompatibility will disable all interfaces on the SPA or all SPAs within the SIP.
FPD image package An FPD image package is used to upgrade FPD images. Whenever a Cisco IOS XR image is released
that supports SPAs, a companion SPA FPD image package is also released for that Cisco IOS XR
software release.
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.
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.
SIP SPA interface processor. A SIP is a platform-specific carrier card that inserts into a router slot like a
line card. A SIP can hold one or more SPAs in its subslots, depending on the SIP type. The SPA
provides the network interface. The SIP provides the connection between the route processor (RP) and
the SPA.
SPA Shared port adapter. A SPA is a modular, platform-independent port adapter that inserts into a subslot
of a compatible SIP carrier card to provide network connectivity and increased interface port density.
The SPA provides the interface between the network and the SIP.
subslot Secondary slot on a SIP where a SPA is installed. The primary slot is the chassis slot on the router.