Cisco CRS-1 - Carrier Routing System Router Getting Started Guide

Glossary
GL-5
Cisco CRS-1 Series Carrier Routing System Getting Started Guide
FAT32
32 bit File Allocation Table. A method of storing information on a hard disk. FAT32 supports drives of
to 2 terabytes and pathnames greater that 256 characters.
FC
fan controller. Two fan controller cards are installed in every line card chassis as a redundant pair to
manage the fan assemblies; there is a BITS timing connector on the fan controller card.
FCRAM
fast cycle random access memory. A fast low latency version of SDRAM used within the Cisco CRS-1
Series routing system.
FEC
forward error correction. FEC is a class of methods for controlling errors in a one-way communication
system. FEC sends extra information along with the data, which can be used by the receiver to check and
correct the data.
FEC is used to correct errors on links including the internal line card to fabric PAROLI
links.
FIB
Forwarding Information Base. Database that stores information about switching of data packets. A FIB
is based on information in the Routing Information Base (RIB). It is the optimal set of selected routes
that are installed in the line cards for forwarding. See also RIB.
FM
fiber module. A module installed in the fabric chassis.
flooding
Traffic passing technique used by switches and bridges in which traffic received on an interface is sent
out all the interfaces of that device except the interface on which the information was originally
received.
forwarding
Process of sending a frame toward its ultimate destination by way of an internetworking device.
Frame Relay
Industry-standard, switched data link layer protocol that handles multiple virtual circuits using
high-level data link control (HDLC) encapsulation between connected devices. Frame Relay is more
efficient than X.25, the protocol for which it generally is considered a replacement. See also HDLC and
cHDLC.
FRR
fast reroute. Automatically reroutes traffic on a label switch path (LSP) if a node or link in an LSP fails.
FRR reduces the loss of packets traveling over an LSP.
FRU
field replaceable unit. A component of the Cisco CRS-1 router that can be ordered individually.
FTP
File Transfer Protocol. Application protocol, part of the TCP/IP protocol stack, used for transferring
files between network nodes. FTP is defined in RFC 959.
G
Gbps
gigabits per second. The amount of data that can be sent in a fixed amount of time. 1 gigabit = 2
30
bits,
1,073,741,824 bits.
GE
Gigabit Ethernet. Standard for a high-speed Ethernet, approved by the IEEE 802.3z standards committee
in 1996.
Gigabit Ethernet
The Ethernet speed for the Cisco CRS-1 Series router control bus running between all chassis.

Cisco CRS-1 - Carrier Routing System Router Specifications

General

Brand	Cisco
Model	CRS-1 - Carrier Routing System Router
Category	Network Router
Language	English