G
LOSSARY
345
PING
Packet Internet or Inter-Network Gropher. This feature allows you to
send out a PING request to test whether devices on an IP network are
accessible and functioning correctly.
protocol
A set of rules for communication between devices on a network. The
rules dictate format, timing, sequencing and error control.
proxy cache
The Webcache is connected to a Layer 2 switch in your LAN. The Web
browser on each client machine in your network must be configured to
explicitly direct its Web requests to the Webcache.
router
A router is a device on your network which is used to forward IP
packets to a remote destination. An alternative name for a router is a
gateway.
server
A computer in a network that holds the master version of a web
page/object. A web request that is not served by the Webcache must
go to the server across the World Wide Web. This is termed a cache
miss. A web request served by the Webcache is termed a cache hit.
SNMP
Simple Network Management Protocol. The current IETF standard
protocol for managing devices on an TCP/IP network.
Squid log format
A standard Access Log format. Using the Squid log format, you can
analyze Webcache Access Log files with off-the-shelf log analysis tools.
stale
Content stored in the cache can either be
fresh
(also known as
current
)
or
stale
(also known as
expired
). If it is stale, the content is out of date
and the Webcache connects to the origin Web server and retrieves the
content.
See also
expired
.
subnet
An IP network can be divided into sub-networks, also known as
subnets. If you have a small network (less than 254 devices), you may
decide not to have multiple subnets.
subnet mask
A subnet mask is used to divide the device part of the IP address into two
further parts. The first part identifies the subnet number. The second part
identifies the device on that subnet.
TCP/IP
Transmission Control Protocol/Internet Protocol. This is the name for
two of the most well-known protocols developed for the
interconnection of networks. Originally a UNIX standard, TCP/IP is now
supported on almost all platforms, and is the protocol of the Internet.
dua1611-5aaa04.book Page 345 Friday, November 29, 2002 8:56 PM
Summary of Contents for SuperStack 3 WEBCACHE 1000
Page 16: ...dua1611 5aaa04 book Page 16 Friday November 29 2002 8 56 PM ...
Page 22: ...22 dua1611 5aaa04 book Page 22 Friday November 29 2002 8 56 PM ...
Page 80: ...80 dua1611 5aaa04 book Page 80 Friday November 29 2002 8 56 PM ...
Page 110: ...110 dua1611 5aaa04 book Page 110 Friday November 29 2002 8 56 PM ...
Page 136: ...136 CHAPTER 8 SYSTEM TIME dua1611 5aaa04 book Page 136 Friday November 29 2002 8 56 PM ...
Page 138: ...138 dua1611 5aaa04 book Page 138 Friday November 29 2002 8 56 PM ...
Page 180: ...180 dua1611 5aaa04 book Page 180 Friday November 29 2002 8 56 PM ...
Page 206: ...206 dua1611 5aaa04 book Page 206 Friday November 29 2002 8 56 PM ...
Page 234: ...234 dua1611 5aaa04 book Page 234 Friday November 29 2002 8 56 PM ...
Page 248: ...248 CHAPTER 17 SOFTWARE UPGRADES dua1611 5aaa04 book Page 248 Friday November 29 2002 8 56 PM ...
Page 250: ...250 dua1611 5aaa04 book Page 250 Friday November 29 2002 8 56 PM ...
Page 274: ...274 dua1611 5aaa04 book Page 274 Friday November 29 2002 8 56 PM ...
Page 286: ...286 dua1611 5aaa04 book Page 286 Friday November 29 2002 8 56 PM ...
Page 348: ...348 GLOSSARY dua1611 5aaa04 book Page 348 Friday November 29 2002 8 56 PM ...