Cisco Systems ASR 1000 Series

Glossary

GL-3

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

OL-13208-03

DHCP Dynamic Host Configuration Protocol

Diagnostic mode A command mode in Cisco IOS XE where all the commands stored in the non-RPIOS sub-package are

still accessible. All commands available in diagnostic mode are also available in privileged EXEC

mode.

DTE Date Terminal equipment. Auxiliary ports of a UART.

DUART Dual Asynchronous Receiver/Transmitter. Used for the CONsole serial port.

ESI Enhanced SerDes Interconnect—Four serial links, each at 1.25-3.125Gbps, 24b/26b. These are the

datapath links on the midplane connecting the RP, SIPs, and standby ESP modules to the active ESP.

EBFC Event-based flow control – packet-based protocol over SPA-SPI interface used by newer high-channel

count, variable rate SPA’s such as ATM to pass egress queue status deltas to the host.

EFC Extended flow control – calendar-based interface used by high-channel count SPA’s to pass egress

queue status to the host.

EMIX Typical traffic pattern including voice for a typical enterprise environment with a mix of packet sizes

and with an average packet size of 250 bytes.

EOBC Ethernet Out of Band Channel—Used for communication between the control processors on the Cisco

ASR1000 chassis

ESP Cisco ASR 1000 Series Embedded Services Processor. The ESP handles forwarding plane traffic and

performs packet processing functions such as Firewall inspection, ACLs, encryption and QoS. Note

that the Cisco ASR1000-ESP is also referred to as the ''forwarding processor'' in the document.

ESPBase ASR1000rp1-espbase.pkg. Provides the ESP operating system and control processes, and the ESP

software.

ESS This is the QFP client that provides a framework for mapping edge switching services feature data from

the control plane into QFP data plane data structures.

EV-FC Event-based flow control - interface used for chip-to-chip communication of the status of egress

queues, used on the embedded services processor

FECP Forwarding engine control processor. A general purpose CPU on the forwarding p rocessor primarily

responsible for managing the forwarding engine and its connection to I/O.

FH Full height shared port adapter

FIB Cisco Forwarding Information Base

Field-replaceable Cisco component can be returne d if damaged