IBM SAN32M1, Installation And Service Manual

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SAN32M1 Fabric Switch Installation and Service Manual 572
SNMP management
station
See simple network management protocol management station .
SNMP v1 See simple network management protocol version 1 .
SNMP v2 See simple network management protocol version 2 .
SRAM See static random access memory .
SSP See system services processor .
state The state of the switch or director. Possible values include online,
offline, testing, and faulty. See
offline state ; online state .
static random access
memory
SRAM. SRAM is microprocessor-cache random access memory. It is
built internal to the microprocessor or on external chips. SRAM is
fast, but relatively expensive (D). Contrast with
dynamic random
access memory .
storage area network SAN. A high-performance data communications environment that
interconnects computing and storage resources so that the resources
can be effectively shared and consolidated.
stored addresses In S/390 mode, a method for configuring addresses.
subnet A portion of a network that shares a common address component. On
transmission control protocol/Internet protocol (TCP/IP) networks,
subnets are defined as all devices whose IP addresses have the same
prefix. Dividing a network into subnets is useful for both security and
performance reasons. IP networks are divided using a subnet mask.
subnet mask A mask used by a computer to determine whether another computer
with which it needs to communicate is located on a local or remote
network. The network mask depends upon the class of networks to
which the computer is connecting. The mask indicates which digits to
look at in a longer network address and allows the router to avoid
handling the entire address. Subnet masking allows routers to move
the packets more quickly. Typically, a subnet may represent all the
machines at one geographic location, in one building, or on the same
local area network.
switch A device that connects, filters and forwards packets between local
area network (LAN) segments or storage area network (SAN) nodes
or devices.