Basic HTML version of Foils prepared Dec. 6 98

Foil 30 NetWare (2)

From Introduction to Network Protocols Lectures at Xi'an Jaotong University -- Sept 1998. by Roman Markowski
1 IPX - Internetwork Packet Exchange:
  • connectionless, datagram-based
  • unique address: consists of network number (32 bits) and node number (48bits MAC address)
  • support for four encapsualtion schemes:
    • Novell Ethernet 802.3
    • Novell_Ethernet_802.2
    • Ethernet version II
    • Ethernet_SNAP
  • SAP - Service Advertisement Protocol
    • services like file servers and print servers advertise their services they provide
    • advertisements are sent every 60 sec
    • services are identified by numbers (4=file server; 7=print server)
    • in NetWare 4.x SAP is replaced by NDS (NetWare Directory Services)
2 SPX - Sequenced Packet Exchange :
  • reliable, connection oriented protocol
  • derived from XNS Sequenced Packet Protocol
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