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The Elements of IPX Routing 6-13
The SAP broadcasts that servers and routers send are local and, therefore,
only received by SAP agents on their connected segments. However, SAP
agents periodically broadcast their server information so that all SAP agents
on the internetwork have information about all servers that are active on
the internetwork.
Server Information Table
A server information table holds information about all the servers on the
internetwork. SAP agents use this table to store information received in SAP
broadcasts. Figure 6-6 shows an example of a typical server information
table.
Figure 6-6 Server Information Table
The server information table provides the following information:
■ Interface — Indicates from which interface the information was received
■ Server Name — The name of the server
■ Server Type — Indicates the type of service provided
■ Network Address — The address of the network on which the server
resides
■ Node Address — The node of the server
■ Socket Address — The socket number on which the server will receive
service requests
■ Hops to Server — The number of intermediate networks that must be
passed through to reach the server associated with this entry
■ Age of Server — The time since the last update for that server
The server information table is either statically or dynamically generated
and updated.
Server Table
Interface Name Type Network Node Socket Hops Age
1 LPX1102 4 45469f33 00-00-00-00-00-01 451 2 102
1 LPX1103 4 45469f44 00-00-00-00-00-01 451 5 65
2 LPX2001 4 45470001 00-00-00-00-00-01 451 4 33