Glossary

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

FPDS

FRU

Used to upgrade FPD images. Whenever a Cisco IOS image is released that supports SPAs, a companion SPA FPD image package is also released for that Cisco IOS software release.

Forwarding Path Data Structures

Field-replaceable unit

G

GEC

Gigabit Ether Channel. This is the logical aggregation of gigabit ethernet links for resiliency and load

 

sharing as defined in the 802.3ad protocol.

GRE

Generic Route Encapsulation

H

HQF

H.248

Hierarchical Queuing Framework

A VoIP signaling protocol, usually used between a dumb device and a clever controller. It is similar in functionality to Media Gateway Control Protocol (MGCP). It is used to communicate between SBC and DBE in a distributed SBC system.

HHHalf height shared port adapters

I

IOCP

 

IO Control Processor. General purpose CPU managing the SPA’s.

IOS

 

Internetworking Operating System

IOSD

 

This refers to IOS daemon running as a process under Linux on the ASR1000- RP1. IOSD is the IOS

 

 

 

process on IOS-SR. The bulk of the control plane, all routing protocols, configuration file management

 

 

 

and so on all are the domain of IOSD.

IOS-SR

 

The Linux-based software infrastructure running on the Cisco ASR1000 series routers.

IPC

 

Inter Process Communication. Any method of passing data between processes running in separate

 

 

 

address spaces.

ISSU

 

In service software upgrade. This refers to a software upgrade when the system is in use. This allows

 

 

 

for two distinct versions of software running on a pair for ASR1000-RP1s while allowing for stateful

 

 

 

switchover between the ASR1000-RP1s.

 

 

 

Cisco ASR 1000 Series Aggregation Services Routers Hardware Installation and Initial Configuration Guide

 

 

 

 

GL-4

 

OL-13208-03

 

 

 

 

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Cisco Systems ASR 1000 Series manual GL-4