Glossary

12X link –

An InfiniBand link capable of 30 Gb/s in each direction simultaneously. It consists of 12 signal

 

pairs, each running at 2.5 Gb/s. 30 Gb/s technology and is downward compatible with 10 Gb/s

 

(4X). 12x links will become available at the end of 2003
1X link –

An InfiniBand link capable of 2.5 Gb/s in each direction simultaneously. 1X technology is

 

upward compatible with 4X (10Gb/s) and 12X (30 Gb/s) links.
4X link -

An InfiniBand link capable of 10 Gb/s in each direction simultaneously. A 4x link consists of 4

 

signal pairs, each running at 2.5 Gb/s. 10 Gb/s links are the current level of InfiniBand technology.

Agent

A software-driven process running on a communications or networking device that allows that

 

device to participate in a network management system. For example, an SNMP agent running

 

on a router provides the ability for the router to exchange information with an SNMP network

 

management system through the use of the SNMP protocol.
ARP

Address Resolution Protocol (ARP) maps TCP/IP network addresses to MAC physical addresses.

 

This ensures proper host-IP address routing.
Base LIDThe numerically lowest Local Identifier (LID) for a set of ports on a subnet.

CA

See Channel Adapter
Channel Adapter

The Channel Adapter (CA) is the component in an end node that connects to the fabric. A CA

 

is classified as either a Host Channel Adapter (HCA) or a Target Channel Adapter (TCA). See

 

also Host Channel Adapter and Target Channel Adapter.
CLICommand Line Interface.
DMA

Direct Memory Access is an efficient way of transporting data between systems. It allows one

 

system to dump data directly into the memory of another system, thus bypassing the CPU and

 

freeing CPU resources for other uses.
DTE-DCE

Configures the wiring of the RS-232 port. When DCE (Data Communication Equipment) is

 

selected, data is received on Pin3 and transmitted on Pin2 (DB-9 connector). When DTE (Data

 

Terminal Equipment) is selected, Pin3 is the transmit and Pin2 is the receive.
FSPF

Fabric Shortest Path First is a popular link-state path-selection protocol. It takes into account

 

the number of switch links, or hops, a connection has to make in selecting a network path. The

 

number of switch links is used to calculate “cost”.
GID

Group ID (GID) assigned to every HP Fabric interface port. The 16-byte GID value is unique

 

across the fabric. The GID is the result of a combined GUID and LID. The GID and QPN are

 

used to identify the IPoIB interface at the port.

 

Multiple GIDs may be associated with a single port.
GUID

Globally Unique Identifier. A number that uniquely identifies a device or component on the

 

network layer. It identifies the target subnet and the port in that subnet. Every channel adapter

 

has a GUID. The GUID and LID result in a Global ID (GID) address in accordance with the

 

IPv6 standard.
HCASee Host Channel Adapter
Host Channel

Host Channel Adapter modules are a method of supporting HP Fabric scalability in the server

Adapter

without redesigning the system motherboard. HP Fabric HCA modules are similar to Fibre

 

Channel host bus adapters (HBAs) in that they create scalable, extensible connectivity outside

 

the server. In HP Fabric configurations, HCAs are used to extend the input/output (I/O)

 

connectivity normally provided by a bus physically located in the server.
IBML

InfiniBand Management Link. Provides management for multiple InfiniBand modules in a

 

single chassis.
ICMP

Internet Control-Message Protocol (ICMP) is a message control and error-reporting protocol

 

between a host server and a gateway to the Internet.
IEC

International Electrotechnical Commission (IEC) assesses international standards and conformity

 

to these standards for all electrotechnology disciplines.

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