Sun Enterprise 10000 InterDomain Networks User Guide
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| Sun Enterprise 10000 InterDomain Networks User Guide
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IDN Glossary |
This contains definitions of abbreviations, words, and phrases that are used in the Sun Enterprise 10000 InterDomain Networks User Guide.
A condition in which all ASICs for the given domain cease arbitration for system buses, thus terminating all hardware transactions. Usually, arbstop errors occur when the ASICs detect hardware anomalies such as hardware parity errors or dropped transactions.
(absent without leave) When a domain is an unknown state (for example, halted or hung) or when it is in a non-responsive state with respect to IDN requests, it is referred to as being AWOL.
If an IDN member domain detects that another IDN member domain is AWOL, that domain sends a warning message to its console and system log. The message indicates only that the domain failed to respond to an IDN message. It does not necessarily indicate that the domain is hung. Typically, an AWOL domain is non-responsive when it stops accepting remote logins or ping(1M) operations.
After a domain has been reported as being AWOL, a recovery event occurs on the SSP to resolve the situation, provided that the Event Detector Daemon has been enabled (see edd(1M)). A message is logged on the SSP in the SSP-specific system log files indicating the occurence of the event.
16-bit mask with each bit representing a system board in the Sun Enterprise 10000 server.
256-Kbyte static RAM attached to each processor PC ASIC. The BBSRAM can be accessed through the PC for reading and writing by using JTAG or the processor. BBSRAM is downloaded when hpost(1M) or the OpenBoot PROM start up code is executed. It provides shared data between the downloaded code and the SSP.
A hardware component that controls the flow of data to and from the system boards that are connected to it.
A cross-domain IDN message exchanged during domain linking. The message contains IDN software and hardware configuration information.
Coherency Interface Controller.
A staging area within the CIC hardware for data targeted for being written to certain CIC registers.
An arbstop condition that involves the set of domains in an IDN.
See also arbstop.
A cross-domain IDN message used by IDN member domains to make certain IDN requests, such as SMR slab allocations and domain name, after they are connected to the IDN.
A cross-domain IDN message that is exchanged during domain linking to synchronize the connection of an incoming domain with other existing IDN member domains.
(Data Link Provider Interface) A standard defined by the UNIX® International OSI Work Group. DLPI defines the format that STREAMS messages must take when interfacing to the datalink layer.
(Databearing Mondo Vector) A subsystem used to exchange control messages between IDN member domains.
A unique numeric value that is chosen by the IDN driver and used to identify IDN member domains. This value is based on physical attributes of the domains and is guaranteed to be unique across the entire Sun Enterprise 10000 server. The values range from 0 to 15.
(Dynamic Reconfiguration) A software feature that enables you to logically attach and detach system boards to and from the operating system without causing machine downtime.
System boards that have been logically grouped together into separate bootable operating environments.
The machine address used by the IDN network software to uniquely identify domains in the Sun Enterprise 10000 server.
(event-detector daemon) Initiates event monitoring on the Sun Enterprise 10000 server control board.
UNIX error number (refer to the Intro(2) man page).
A cross-domain IDN message that is exchanged during domain unlinking to synchronize the disconnect of an outgoing domain with other existing IDN member domains.
A unique value that is defined in each SMR mailbox header. The header cookie value uniquely identifies the mailbox header and provides a means for detecting possible data corruption within SMR mailboxes.
(SSI_INFO) An SSP based sigblock mailbox operation performed by SSP-based IDN commands to query IDN information from the host-side IDN driver.
(Internet Protocol) Refer to the TCP/IP and Data Communications Administration Guide for more information.
The IDN driver is composed of multiple instances with each instance representing a separate logical network interface. Each logical interface can serve as a separate IP subnet.
Least Significant Bits/Most Significant Bits.
The machine address portion of the Ethernet header that contains the Ethernet address. For the IDN feature, this address is used to uniquely identify the target domain for an IP datagram.
(In the context of the IDN feature) Represents the point-to-point interdomain mailboxes that reside in the SMR. They are used to transmit IDN data packets between IDN member domains.
See also SMR.
The IDN member domain that contains the physical SMR. The master domain exports the SMR to the slave domains. Slave domains have a logical SMR that maps to the physical SMR of the master domain. You can determine which IDN member domain is the master by using the ndd(1M) parameter idn_global for the IDN driver.
See also slave domain.
Memory Controller Address Decoding Register.
Network console (see the netcon(1M) man page).
A cross-domain IDN message that is exchanged to initiate domain linking and to negotiate which domain is, or becomes, the master domain.
See also master domain.
The portion of the SMR that is actually used by the IDN driver for data packet (TCP/IP) communication between domains.
In this guide, plumb means to configure the network by using the ifconfig(1M) command.
The data structure created by POST. which describes the physical components of the system. Resides in BBSRAM.
(or sigblock) See bootbus SRAM (BBSRAM).
shared memory domain registers
Allow a message to be forwarded to a particular system board. The shared memory domain registers are located on the interconnect.
Allow an incoming message to be accepted from a particular system board. The shared memory mask registers are located on the system board.
A unit of allocation of SMR space. Slabs represents an array of fixed-sized SMR buffers to be used for IDN data packets.
A structure that is managed by the master domain to administer allocations of the SMR to the slave domains.
An IDN member domain that imports a logical mapping of the physical SMR from the master domain.
The SNMP proxy agent listens to a UDP port for incoming requests and services the group of objects specified in Ultra-Enterprise-1000.mib. See snmpd(1M).
System Service Processor enables you to monitor and control the Sun Enterprise 10000 server.
A kernel mechanism that supports development of network services and data communications drivers. STREAMS defines interface standards for character input/output within the kernel, and between the kernel and user level. The STREAMS mechanism comprises integral functions, utility routines, kernel facilities, and a set of structures.
Local networks with large numbers of hosts are sometimes divided into subnets. See the TCP/IP and Data Communications Administration Guide for more information.
In this guide, unplumb refers to the action of deconfiguring the network.
A 32-bit quantity that is exchanged by IDN member domains during linking to determine which domain is or will become the master domain. The value is guaranteed to be unique across the entire Sun Enterprise 10000 server.
| Sun Enterprise 10000 InterDomain Networks User Guide
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