Konica Minolta pagepro 4650EN pagepro 4650EN/5650EN Reference Guide - Page 190

SLP, SMTP, SNMP, router's perspective, a subnet is all machines connected to one of its ports.

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SLP Traditionally, in order to locate services on the network, users had to supply the host name or network address of the machine providing the desired service. This has created many administrative problems. However, SLP (Service Location Protocol) simplifies the discovery and use of network resources such as printers by automating a number of network services. It provides a framework that allows networking applications to discover the existence, location, and configuration of networked services. With SLP users no longer need to know the names of network hosts. Instead, they need to know only the description of the service they are interested in. Based on this description, SLP is able to return the URL of the desired service. Unicast, Multicast, and Broadcast SLP is a unicast and a multicast protocol. This means that messages can be sent to one agent at a time (unicast) or to all agents (that are listening) at the same time (multicast). However, a multicast is not a broadcast. In theory, broadcast messages are "heard" by every node on the network. Multicast differs from broadcast because multicast messages are only "heard" by the nodes on the network that have "joined the multicast group." For obvious reasons network routers filter almost all broadcast traffic. This means that broadcasts that are generated on one subnet will not be "routed" or forwarded to any of the other subnets connected to the router (from the router's perspective, a subnet is all machines connected to one of its ports). Multicasts, on the other hand, are forwarded by routers. Multicast traffic from a given group is forwarded by routers to all subnets that have at least one machine that is interested in receiving the multicast for that group. SMTP SMTP (Simple Mail Transfer Protocol) is a protocol for sending e-mail. This protocol was originally used to send e-mail between servers; however, currently client e-mail software use it to also send e-mail to servers using POP. SNMP SNMP (Simple Network Management Protocol) is actually a set of protocols for managing complex networks. SNMP works by sending messages to different parts of a network. SNMP-compliant devices, called agents, store data about themselves in Management Information Bases (MIBs) and return this data to the SNMP requesters. 172 Network Printing

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Network Printing
172
SLP
Traditionally, in order to locate services on the network, users had to supply
the host name or network address of the machine providing the desired ser-
vice. This has created many administrative problems.
However, SLP (Service Location Protocol) simplifies the discovery and use of
network resources such as printers by automating a number of network ser-
vices. It provides a framework that allows networking applications to discover
the existence, location, and configuration of networked services.
With SLP users no longer need to know the names of network hosts. Instead,
they need to know only the description of the service they are interested in.
Based on this description, SLP is able to return the URL of the desired
service.
Unicast, Multicast, and Broadcast
SLP is a unicast and a multicast protocol. This means that messages can be
sent to one agent at a time (unicast) or to all agents (that are listening) at the
same time (multicast). However, a multicast is not a broadcast. In theory,
broadcast messages are “heard” by every node on the network. Multicast
differs from broadcast because multicast messages are only “heard” by the
nodes on the network that have “joined the multicast group.”
For obvious reasons network routers filter almost all broadcast traffic. This
means that broadcasts that are generated on one subnet will not be “routed”
or forwarded to any of the other subnets connected to the router (from the
router’s perspective, a subnet is all machines connected to one of its ports).
Multicasts, on the other hand, are forwarded by routers. Multicast traffic from
a given group is forwarded by routers to all subnets that have at least one
machine that is interested in receiving the multicast for that group.
SMTP
SMTP (Simple Mail Transfer Protocol) is a protocol for sending e-mail.
This protocol was originally used to send e-mail between servers; however,
currently client e-mail software use it to also send e-mail to servers using
POP.
SNMP
SNMP (Simple Network Management Protocol) is actually a set of protocols
for managing complex networks. SNMP works by sending messages to differ-
ent parts of a network. SNMP-compliant devices, called agents, store data
about themselves in Management Information Bases (MIBs) and return this
data to the SNMP requesters.