Novell Netware Protocol suite
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The document summarizes the Novell Netware protocol suite. It describes the hierarchical model and compares it to the OSI reference model. The key protocols covered include IPX for routing, RIPX for dynamic routing, SPX for service publication, and Watchdog for host monitoring. Upper layer protocols like Netware Shell and RPC redirect I/O operations to lower network layers. The document provides technical details on addressing, encapsulation types, and the functions of various Netware protocols.
Novell Netware Protocol suite
- 1. Novell Netware Protocol suite Omar Adnan Isaid
- 2. Novell Netware Protocol suite • Novel Netware suite is a hierarchical model • We Will explain it with OSI reference
- 3. Network Access Layer • Support multiple LAN and WAN encapsulations standards • PPP,IEEE 802.3 , Token Ring 802.5,FDDI ,ARCnet
- 4. Network Layer • Mainly implemented of IPX protocol.We will talk about : 1.IPX (internetwork packet exchange)protocol 2.RIP IPX protocol 3.SPX (sequenced packet exchange)protocol 4.Watchdog protocol
- 5. IPX (internetwork packet exchanged) • Developed from IDP (internet datagram protocol) in the previously developed XNS • Get the RIP IPX support to provide routing service • IPX address 1.32 bits long(8 hexadecimal digits) 2.IPX is a unique address 3.Assigned by the network administrator
- 6. IPX addressing • Logical networks are assigned a unique 32-bit hexadecimal address in the range of 0x1 - 0xFFFFFFFE. • Hosts have a 48-bit node address which by default is set to the network interface card's MAC address. The node address is appended to the network address to create a unique identifier for the host on the network. • Network number 00:00:00:00 means current network • Broadcast address is FF:FF:FF:FF
- 7. IPX & different encapsulation’s types
- 8. RIP IPX OR RIPX • Routing protocol • Dynamic distance vector or Link-state protocol • Best-path routing desicion according to route’s tick • Each tick is 1/18 second • Tie of having same tick for two routes is solved by the least hop count • RIPX sends its routing updates each 60 seconds
- 9. RIPX • Discover neighbors ,that speaking RIPX • Collect routes • Choose best-path route , according to compromising , between ticks
- 10. Service procedure exchange (SPX) protocol • Completely produced by Novell corporation • Netware 3.11 and earlier networks uses this protocol to built SPX tables in their routers • Servers uses SPX to publish their identifiers , called SPX identifiers • SPX publishes SPX identifiers every 60 seconds
- 11. HOW can WORKSTATIONS can get their demands of SPX identifiers ? 1. Local routers publish SPX tables every 60 seconds 2. End-station can solicit SPX identifiers
- 12. 1. Local routers publish SPX tables every 60 seconds 1. SPX servers publish SPX tables routers every 60 seconds 2. Routers at Netware networks , receive them and build SPX tables 3. the routers in turn publish SPX table every 60 seconds to their stub networks
- 13. 2. End-station can solicit SPX identifiers 1. Simply the end-user (OMAR-PC for example) sends Query about specific SPX identifier(s) to local router 2. Local router process the Query and return the request
- 14. Watchdog protocol • Diagnostic protocol helps to identify the active hosts , from their fail down • This protocol useful for gateways and management systems • Diagnostic done periodically using handshaking methodology
- 15. Upper-layer protocols (session, presentation and application layers) • We will talk about : 1.Netware shell 2.NetWare RPC protocol
- 16. Netware shell protocol • Netware application services produces trap due to I/O operation , that handled by this protocol • This protocol can pass the I/O to lower layers if network access is needed, else request passed to local I/O resources • This protocol can modify operating system vector table to handle the different traps concerns with the SPX/IPX suite services on application level
- 17. NetWare RPC protocol • Do the same as Netware shell Protocol • Different when that redirect mechanism can support in end-to-end communication is RPC
- 18. Netware application layer services • Netware MHS (Message handling service) • NDS (Netware directory service)
- 19. Netware MHS • Have to do with e-mail transport
- 20. NDS (Netware directory service) • Service provide distributed database • E-Directory has been trusted for its scalability, compatibility, reliability, manageability and security • NDS can be consulted to get SPX identifiers in Netware 4.0 and following versions • SPX still needed to locate NDS when client boot up
- 21. IPv4 & IPX (Formats of their datagrams) IPX format IPV4 format