Bay Networks NauticaRS, Справочное руководство

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1-16 117237-E Rev.00
NauticaRS 5.5R Reference Guide
Supported RIP Types
Nautica routers support both RIP1 and RIP2. RIP2 has several
enhancements, including the ability to transmit sub-address
information with the routing table, allowing networks with
variable-length sub-networks to be supported.
Introduction to IPX
The Nautica series also supports Novell’s IPX protocol. The IPX
protocol provides a connectionless datagram delivery service,
providing both internetwork addressing and intranode addressing
(sockets). IPX’s major task is to deliver packets from one source
on the internetwork to a destination at another place on the
internetwork, this process is known as internetwork addressing.
IPX RIP is responsible for advertising the best route to a node,
and for assigning a workstation’s network address. IPX achieves
this in two ways:
• Broadcasting an unsolicited IPX RIP message (every 30
seconds).
• Responding to a Get Target Request. This method is
requested by a node to determine the fastest path to a
particular destination, and is responded to by the router
attached to the local network. By checking the source address
of the response message, the client workstation can
determine its own network number.
Internetwork addressing works in the same way as outlined
earlier, while intranode addressing allows data to be delivered to
the appropriate process on the correct node. The intranode
addressing uses sockets to identify the various processes that are
running on any given node at any one time. Sockets can be seen as
mailboxes in an apartment complex: within a single building
(network) there are multiple apartments (services); each
apartment has a mailbox (socket) that directs mail (data) to it
alone.