Steelhead Appliance Installation and Configuration Guide
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Glossary
Acceleration Policy.
An acceleration policy contains optimization rules for accelerating the WAN traffic for
endpoint clients. An acceleration policy is required for optimization to occur.
ACK.
A packet message used in the TCP to acknowledge receipt of a packet.
ARP.
Address Resolution Protocol. An IP protocol used to obtain a node's physical address.
Assignment.
An assignment occurs when an endpoint or an acceleration policy is matched to a deployment
ID (DID).
Bandwidth.
The upper limit on the amount of data, typically in kilobits per second (kbps), that can pass
through a network connection. Greater bandwidth indicates faster data transfer capability.
Bit.
A Binary digit. The smallest unit of information handled by a computer; either 1 or 0 in the binary
number system.
Blade.
One component in a system designed to accept some number of components (blades).
Bridge.
Device that connects and passes packets between two network segments that use the same
communications protocol. Bridges operate at the data link layer (Layer 2) of the OSI reference model. In
general, a bridge filters, forwards, or floods an incoming frame based on the MAC address of that frame.
Cache.
A temporary storage area for frequently or recently accessed data.
CIFS.
Common Internet File System. CIFS is the remote file system access protocol used by Windows
servers and clients to share files across the network.
Correct Addressing.
A packet addressing method in which the source IP addresses and port numbers are
used in the header fields.
Database Cursor.
A record pointer in a database. When a database file is selected and the cursor is opened,
the cursor points to the first record in the file. Using various commands, the cursor can be moved forward,
backward, to top of file, bottom of file, and so forth.
De-Duplication.
A method of reducing storage space by eliminating redundant data. It stores only one
unique instance of the data. It replaces redundant data with a pointer to the unique data copy.
Default Gateway.
The default address of a network or Web site. It provides a single domain name and point
of entry to the network or site.
