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1、2022年Alberts CCNA Study Guide(1)Access list1-99 IP standard100-199 IP extended200-299 Protocol type code300-399 DECnet access list400-499 XNS Standard Access500-599 XNS Extended Access600-699 AppleTalk700-799 48 bit MAC address800-899 IPX900-999 IPX Extended1000-1099 IPX SAP1100-1199 Extended 48 bit
2、 MAC address1200-1299 IPX summary addressPort numbersTCP=6UDP=17FTP=21TELNET=23SMTP=25DNS=53TFTP=69SNMP=161NOVEL IPX Frame TypeInterfaceNovell Frame TypeCisco KeywordEthernetEthernet 802.3 and NetWare 3.11Novell EtherIPX Ethernet EncapsulationEthernet 802.2 and NetWare 3.12SAPEthernet IIARPA, DECnet
3、 and supports TCP/IP, IPX and upper layersEthernet SNAPSNAP, AppleTalk, IPX, and TCP/IPToken RingToken Ring 802.SAPToken Ring_SNAPSNAPFDDIFDDI SNAPSNAPFDDI 802.2SAPFDDI RAWNOVELL-FDDIDOD modelIPDODProtocolApplication, Presentation, SessionProcess ApplicationTelnet, FTP, LPD, SNMP, TFTP, SMTP, NFS, X
4、 WINDOWTransportHost to HostTCP, UDPNetworkInternetICMP, BOOTP, ARP, RARP, IPData LinkNetwork AccessEthernet, Fast Ethernet, Token Ring, FDDIIPX Protocl Stack:Application, Presentation, Session ?/span RIP, SAP, NCP, NLSP, etcTransport ?/span IPX, SPXNetwork ?/span IPXData link ?/span ODL Open Data L
5、inkPhysical ?/span whateverOSI Model:Transport is TCP SegmentsNetwork is IP Packets/DatagramsData Link is Ethernet framesPhysical is BitsThe five steps to Encapsulation:1. Build the data2. Package data for end-to-end transport (Segments transport subsystem)3. Append network address in header (data is put into a packet or datagram) Network4. Append local address in data link header (must be put into a frame or packet) Data5. Convert to bits for transmission 1 and 0 PhysicalData Segment Packet Frame BitsData Encapsulation Method1. User information is converted to data for transmissi