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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.
E
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
F
FECP
Forwarding engine control processor. A general purpose CPU on the forwarding processor 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 returned if damaged