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III.7 Novell IPX

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Cisco IOS softwareOperating system software allows centralized, integrated, and automated installation and management of internetworks, while ensuring support
clientNode or software program (front-end device) that requests services from a server.
client-server computingTerm used to describe distributed computing (processing) network systems in which transaction responsibilities are divided into two parts: client (front end) and server (back end). Both terms (client and server) can be applied to software programs or actual computing devices.
Enhanced IGRP (EIGRP)Provides superior convergence properties and operating efficiency, and combines the advantages of link state protocols with those of distance vector protocols.
encapsulationThe wrapping of data in a particular protocol header
frameLogical grouping of information sent as a data link layer unit over a transmission medium. Often refers to the header and trailer, used for synchronization and error control, that surround the user data contained in the unit
Get Nearest Server (GNS)Request packet sent by a client on an IPX network to locate the nearest active server of a particular type.
Internetwork Packet Exchange (IPX)NetWare connectionless layer 3 protocol, used for transferring data from servers to workstations.
Media Access Control (MAC)sublayers of the data link layer defined by the IEEE, that handles access to shared media, such as whether token passing or contention will be used
NetWarePopular distributed NOS developed by Novell. Provides transparent remote file access and numerous other distributed network services.
NetWare Link Services Protocol (NLSP)Link-state routing protocol based on IS-IS (Intermediate System-to-Intermediate System)
Network operating system (NOS)Generic term used to refer to what are really distributed file systems
routing metricMethod by which a routing algorithm determines that one route is better than another.
Service Advertisement Protocol (SAP)IPX protocol that provides a means of informing network clients, via routers and servers, of available network resources and services
Until Novell's NetWare 5.0 release in 1998, all NetWare networksused IPX.
NetWare uses a ______ architecture.client/server
NetWare servers are dedicated servers andcannot be used as clients
NetWare Clients (sometimes called workstations) requestservices, such as file and printer access, from servers.
Novell Routing Information Protocol (RIP)different from IP RIPdifferent from IP RIP, used to facilitate the exchange of routing information
NetWare Core Protocol (NCP)used to provide client-to-server connections and applications
Sequenced Packet Exchange (SPX)service for Layer 4 connection-oriented services
IPX uses the _______ addressing structurenetwork.node
IPX RIP sends routing updates every ____seconds60
IPX RIP uses ticks (network delay) and hop count as its routing metrics and is limited to a maximum of _____ hops.16
In Novell IPX addressing, the node number is usually theMedia Access Control (MAC) address for a network interface
The IPX network number, which is assigned by the network administrator, can be up toeight base 16 (hexadecimal) digits in length
The best and recommended way to obtain a Novell network address is toask the network administrator for one.
you can get the IPX address directly from a neighbor router bytelneting to the neighbor router and use the show protocols or show ipx interface command.
Ethernet 802.3novell ether
Ethernet 802.2SAP
Ethernet IIarpa
Ethernet_SNAPSNAP
Multiple encapsulations are supported on a single LAN interface, allowing older and newer NetWare nodes to coexist on the same LAN segment as long as youconfigure multiple logical networks
The IPX packet is thebasic unit of Novell NetWare networking.
Because Novell RIP is a distance-vector routing protocol, it uses these two metrics to make routing decisionsticks (a time measure) and hop count (a count of each router transversed).
If two or more paths have the same tick value, Novell RIP comparesthe hop count
If two or more paths have the same tick value and hop count, the routerload shares
Load sharing is the use oftwo or more paths to route packets to the same destination evenly among multiple routers to balance the work and improve network performance.
A router's Novell RIP routing table is different from its IP routing table because the router maintains a routing table forevery IPX protocol that is enabled.
each IPX-enabled router periodically passes copies of its Novell RIP routing table to itsdirect neighbor
Each Novell network service is identified by a number, called aSAP identifier.
SAP updates are sent every60 seconds.
When a Novell client requests a particular network service, , if a Netware server is located on the segment,it responds to the client request
When a Novell client requests a particular network service and there are no Netware servers on the local network, then the Cisco router responds witha server address from its own SAP table.
. Adding, finding, and removing services on the network isdynamic because of SAP advertisements.
Workstations do not keep SAP tables-onlyrouters and servers keep SAP tables
Routers do not forwardSAP broadcasts.
NetWare clients automatically discover available network services because Novell servers and routersannounce the services by using SAP broadcasts.
The NetWare client/server interaction begins whenthe client powers up and runs its client startup programs.
The Cisco router does not respond tothe GNS request.
If there are no NetWare servers on the local network, the Cisco router responds with aserver address from its own SAP table
By supporting serverless LAN segments and distributing clients evenly among available servers, Cisco IOS software providesnetwork-based load sharing, improves application availability, and minimizes the need to configure and manage large numbers of local servers, assuming that the servers are identical
Interface IPX configuration tasks include the following:Assign unique network numbers to each interface and setting the optional IPX encapsulation type if it is different from the default.
When enabling IPX, if no node address is specified, the Cisco router usesthe MAC address of the interface.
When assigning IPX network numbers to interfaces that support multiple IPX networks, you can also configureprimary and secondary IPX networks.
Each IPX network on an interface must use a distinctencapsulation, and it should match that of the clients and servers using the same network number.
. A subinterface is a mechanism thatallows a single physical interface to support multiple logical interfaces or networks.


Continuing Education
Harrison County
Bridgeport, WV

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