Glossary
GL-5
Cisco ASR 1000 Series Aggregation Services Routers Hardware Installation Guide
OL-13208-11
IOSD
This refers to IOS daemon running as a process under Linux on the ASR 1000 Series route processor.
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 ASR 1000 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 ASR 1000 Series route processors while
allowing for stateful switchover between the ASR 1000 Series route processor.
L
LC
Line card
LDP
Label Distribution Protocol
LIPC
Local IPC between two processes
Location ID
A location ID is configured on each data border element (DBE). The signaling border element (SBE)
may associate endpoints with a particular location ID and then use the location IDs to route calls
between different DBEs.
M
Media address
Pool of IP addresses on the DBE for media relay functionality. A pool of addresses is defined for the
Global VPN that the DBE is attached to. All vDBEs within the DBE draw media addresses from this
pool.
MGCP
Media Gateway Control Protocol. This is a VoIP signaling protocol, usually used between a dumb
device and a clever controller. It is similar in functionality (if not syntax) to H.248. It is defined in RFC
2705.
MPLS
Multi-Protocol Label Switching
N
NAT
Network Address Translation. This is a program or piece of hardware that converts an IP address from
a private address to a public address in real time. It allows multiple users to share a single public IP
address.
NAT traversal
Detects that the endpoints are behind a NAT device.
NBAR
Network-based Application Recognition
