DECnet-IV, DECnet-Plus und TCP/IP Evolution of DNA DNA Phases - PowerPoint PPT Presentation

IT-Sympoisum 2007 19.04.2007 DECnet-IV, DECnet-Plus und TCP/IP Evolution of DNA DNA Phases Phase I • - 1976 PDP-11 RSX DECUS IT – Symposium 2007 DECUS IT – Symposium 2007 - Program to program (task to task) communication - File Transfer - Typical customer was NOT an end user - Maximum network size of 16 point-to-point nodes Nürnberg Nürnberg Phase II • - 1978 VAX 11/780 VMS V1, RSX, RT-11 - Remote file access - Viewing and listing directories - Network management - Maximum network size of 64 point-to-point nodes - Provided a means of monitoring, testing and controlling the network Karl Bruns Karl Bruns Phase III Trainer/Consultant • Trainer/Consultant - 1980 OpenVMS and Networking OpenVMS and Networking - Adaptive routing OSI, DECnet, X.25 and TCP/IP OSI, DECnet, X.25 and TCP/IP - Network terminals (e.g. SET HOST) Lessingstr. 1 - Multipoint lines Lessingstr. 1 D-86438 Kissing D-86438 Kissing - CCITT X.25 Phone +49/8233/2938 Phone +49/8233/2938 - Record access Mobile +49/1717168148 Mobile +49/1717168148 - Down-line loading www.kbruns-training.de www.kbruns-training.de - Maximum size of network was 255 nodes karl.bruns@web.de karl.bruns@web.de 1 2 Karl Bruns Karl Bruns Seite 1 www.hp-user-society.de 1

IT-Sympoisum 2007 19.04.2007 DECnet IV Evolution of DNA Architektur • Phase IV user - 1983 DCL.EXE user defined protocols layer - Incorporated LAN technology into DECnet - Ethernet-LANs Data appli- CTERM X.25 $QIO - LAT-Support, Terminalserver Access Mail cation REMACP GAP ... Protocol layer - with VMS 4.0: VAXcluster - Token Ring Support for Q-Bus Session session - SNA-Gateway Protocol layer - Implementing OSI with separate Products: VOTS, OSAK, FTAM, Network X.400, ... Mgmt end Listener Network - Maximum size of network ~64.000 nodes commu- Service nication Protocol layer • Phase V NCP - 1988 IBM announced SAA Routing routing Vector Digital announced DNA Phase V with full support of the layer Routing OSI architecture model NSAP max. 20 bytes data Ethernet - 1991 FDDI DDCMP X.25 CI link V2 VAX Extensions for VAX/VMS (Wave 1) layer VAX P.S.I. V5 still remaining NCP physical layer DECnet/OSI for Ultrix - 1992 DECnet/OSI Wave 2 full NCL-Management - 1993 Wave 3 DNA IV applications over OSI Transport (TP4) DECnet/OSI for Digital UNIX - 1996 DECnet-Plus for OpenVMS V7.1 and Digital UNIX V4.0 3 4 Karl Bruns Karl Bruns Seite 2 www.hp-user-society.de 2

IT-Sympoisum 2007 19.04.2007 Verwaltung von DECnet IV Verwaltung von DECnet IV Volatile Database: • Beispiele: • • SHOW • NCP> SHOW LINE EWA-0 CHAR • SET • CLEAR • NCP> SHOW CIRCUIT EWA-0 CHAR Permanent Database: • • NCP> SHOW KNOWN LINE • LIST CHAR • DEFINE • NCP> SHOW KNOWN CIRCUIT • PURGE CHAR Erweiterungen der Kommandos: • • NCP> SHOW KNOWN LINK • LINE CHAR • CIRCUIT • NCP> SHOW KNOWN OBJECT • LINK • OBJECT • NCP> SHOW KNOWN NODES • EXECUTOR • NCP> SHOW EXEC CHAR $ MC NCP • • NCP> SHOW EXEC STATUS • NCP> • NODE 5 6 Karl Bruns Karl Bruns Seite 3 www.hp-user-society.de 3

IT-Sympoisum 2007 19.04.2007 Verwaltung von DECnet IV Verwaltung von DECnet IV Konfigurieren von DECnet IV: • • $ @ SYS$MANAGER:NETCONFIG.COM Einschalten des Event- Loggings: Start von DECnet IV: • • $ @ SYS$MANAGER:STARTNET.COM • NCP> SET LOGG MONITOR • Sollte vor LAT und TCP/IP gestartet KNOWN EVENTS werden in SYSTARTUP_VMS.COM oder SYSMAN • NCP> SET LOGG MONITOR STATE ON Anhalten von DECnet: • NCP> EXIT • • NCP> SET EXEC STATE SHUT • $ REPLY/ENABLE • NCP> SET EXEC STATE OFF Vorstellung der DECnet-Knoten: • • NCP> SET NODE 1.5 NAME AXP5 • NCP> DEF NODE 1.5 NAME AXP5 7 8 Karl Bruns Karl Bruns Seite 4 www.hp-user-society.de 4

IT-Sympoisum 2007 19.04.2007 Verwaltung von Verwaltung von DECnet IV DECnet IV • Fehlersuche • $ SHOW DEV E* /FULL • Knoten hört auf MOP- Requests: • $ANALYSE / SYSTEM > SHOW LAN • NCP> SET CIRC EWA-0 STATE OFF • MC NCP • NCP> SET CIRC EWA-0 • Counters zurücksetzen: SERVICE ENABLE • NCP> ZERO ... COUNTERS • NCP> SET CIRC EWA-0 STATE ON • Anzeigen: • NCP> SHOW ... COUNTERS • Beispiel: • NCP> ZERO KNOWN LINE COUNTERS • Warten... • NCP> SHOW KNOWN LINE COUNTERS 9 10 Karl Bruns Karl Bruns Seite 5 www.hp-user-society.de 5

IT-Sympoisum 2007 19.04.2007 Installation von DECnet What comprises DECnet-Plus ? • Bei Installation von OpenVMS wird nach DECnet Version gefragt • DNA Phase IV, complete stack including • Für die Migration von DECnet DNA IV Applications • DNA IV Routing IV auf DECnet-Plus muss • DNA IV Datalinks (DDCMP etc.) • Phase IV erst deinstalliert werden: • OSI (Complete Stack, Layers 1-7) OSI Applications (FTAM, VTP) • OSI Transport (TP0, TP2, TP4) • $ PRODUCT REMOVE OSI Routing (ISO 8473, ISO 9542, ISO 10589) • DECNET_PHASE_IV OSI Datalinks (ISO 8802.3, ISO 8802.2, ...) • OSI CONS (X.25, ISO 8208, ISO 7776) • • DNA Phase IV Applications over TP4 • Dann kann DECnet-Plus installiert und konfiguriert • DNA IV - OSI Interworking werden: Phase IV Router with V Router • Phase IV and V Router with IV and V End Systems • $ PRODUCT INSTALL DECNET_OSI • “DECnet over TCP/IP” $ NET$CONFIGURE ADVANCED 11 12 Karl Bruns Karl Bruns Seite 6 www.hp-user-society.de 6

IT-Sympoisum 2007 19.04.2007 The Double-Headed OSI Standards Monster Reference Model of Open Systems Interconnection D D C $ F X X X.25 E E M V T SNA D Q APPL T 5 4 ISO 7498-1 ISO 7498-2 ISO 7498-3 ISO 7498-4 C C A T ... 7 G CCITT X.200 CCITT X.800 CCITT X.650 CCITT X.700 E A I MGMT A 0 0 I d d P A R P O M 0 0 t n L P M ... Basic Reference Security Naming and Management s s OSI OSI Presentation 6 DNA Model Architecture Adressing Framework CDI Net Net DNA Session Control DECdns, .. Mgmt OSI Session 5 Mgmt CMIP ISO 7498 describes: NSP ISO TP 0, 2, 4 4 NCL 1. 7-layer-architectured-model (CLNS) (CONS) DECmcc 3 2. abstract description of the layers and services ISO Internet, IS-IS Routing and IS-ES X.25 PLP 3. Protocols of the layers (entities) LLC1 LLC2 Frame Layer 2 Ethernet Frame (LAPB) Ethernet Token DQDB FDDI DDCMP HDLC PPP V2.0 Relay Ring SMDS X.21, ISDN 802.3 1 802.5 802.6 X.21 bis 13 14 Karl Bruns Karl Bruns Seite 7 www.hp-user-society.de 7

IT-Sympoisum 2007 19.04.2007 OSI Applications Network Layer over CONS OSI Application FTAM X.400 ... CLNS: ISO Internet Protocol 8473 • CONS: OSI Transport directly over X.25 PLP over X.25 frame layer or LLC2 • Null Internet OSI Presentation • Routing: IS-IS (Link State Routing LSR) • ES-IS DNA IV-routing (Routing Vector Routing (RVR) = Distance Vector Routing) Adaptive Routing OSI Session • Routing is based on costs (Metric) • ES = End System • IS = Intermediate System (Router) • L1-routing • OSI Transport L2-routing (area routing) • TP0, TP2 L1 L2 • RVR RVR RVR LSR LSR RVR X.25 packet layer LSR LSR most important rule: within an area only one algorithm • LLC2 X.25 frame layer 802.2 for mixed domains on L2: LAPB • Interphase links with static routes (Reachable Address Tables) Ethernet 802.3 MAN (DQDB) 802.6 X.21 FDDI 9314-x X.21bis ISDN 15 16 Karl Bruns Karl Bruns Seite 8 www.hp-user-society.de 8