09/06/96 Debugging 128-Port Remote SPECIAL NOTICES Information in this document is correct to the best of our knowledge at the time of this writing. Please send feedback by fax to "AIXServ Information" at (512) 823-4009. Please use this information with care. IBM will not be responsible for damages of any kind resulting from its use. The use of this information is the sole responsibility of the customer and depends on the customer's ability to eval- uate and integrate this information into the customer's operational environment. +----------------------------------------------------------+ | | | NOTE: The information in this document has NOT been | | verified for AIX 4.1. | | | +----------------------------------------------------------+ ABOUT THIS DOCUMENT This document applies to AIX versions 3.2.3 and 3.2.5. INFORMATION NEEDED FOR DEBUGGING Important: Users should NOT be logged in on any device on the 128-port RANs while doing the following diagnostics. 1. Are all the needed 128-port PTFs installed? _______ 2. How many 128-port controllers are installed in this system? _____ 3. Are there any local RANs (these are NOT connected over modem or DSU)? _____ 4. If there are local RANs, do they work correctly? _____ 5. Was this configuration working previously? _____ 6. What is displayed on the remote RANs LED display (P0,P1,P2,P4,AC)? ________ 7. Is the last remote RAN terminated? _____ 8. Are the RAN node numbers set correctly? ______ 9. Is the line set for 232 or 422 sync? _____ 10. Is cabling 8 wire? _____ 11. Has cabling been checked? If not, use figures in the next section.________ Debugging 128-Port Remote 1 09/06/96 12. Are DSUs or modems being used? _____ 13. Are all DSUs/modems the same type and model? _____ 14. Who is the manufacturer and what is the model type of each? ______________________________ 15. Do the transmit (TD) and receive (RD) data lights flash on the remote RAN?_______ NOTE: Packet information from the 6000 should be received by the RAN and acknowledgment sent back from the RAN. This is the reason for the flashing TD and RD lights. 16. If only one of the RANs TD or RD lights is flashing, which one is it? _____ 17. Does the DSU/modem flash the same TD and RD lights? ____ NOTE: Some modems may show an SD or TxD light instead of TD. They may also display an RxD or something similar in place of RD. 18. Is this a leased-line phone connection or a regular carrier? _______ 19. What speed is the leased line (phone line) set for? The 128-port line speed should be set the same as the leased- line speed._______ EXAMPLE: Digital leased-line speed is 57.6 128-port line "1" speed should also be 57.6 20. If the phone line is suspect, has it been checked by the local phone company? _________ 21. In "smit chg128psync" output, what is the Line 1 and Line 2 setup? See configuration information later in this document to compare your configuration to the exam- ples. (Include this information on another page when sending in.) To resend the initialization string to the remote RANs, press the Enter key on the "Change/Show Characteristics of a 128-Port Async Adapter" screen. Observe the LED on the remote RAN. 22. What happens when the command "cfgmgr -v" is issued? View the output on the terminal screen and observe the RAN's LED display. RANs change? ______ EIGHT-WIRE SYNCHRONOUS MODEM WIRING Eight-Wire Synchronous Modem wiring allows RANs to be installed in remote locations and connected to the host adapter via RS-232 or RS-422 synchronous modems. The IBM 128-Port Host Adapter and the RAN have been designed so that the synchronous ports can support either RS-422 or RS-232 line levels. To connect host adapters and RANs to RS-232 Debugging 128-Port Remote 2 09/06/96 synchronous modems, use the special cables shown in the diagram below. Note that only the negative lead for each RS-422 signal is used in this configuration. The positive lead is left "floating". ============================================================ FIGURE 1 RS232 Synchronous Modem Cable Specs. ============================================================ (LOCAL) (REMOTE) 128-Port Controller RS-232 RS-232 Synchronous Synchronous Synchronous Concentrator Port Modem Modem "IN" Port RxD 1 .......3 RxD 3 RxD 6 RxD RxC 4 ......17 RxC 17 RxC 9 RxC TxD 6 .......2 TxD 2 TxD 1 TxD TxC 9 ......15 TxC 15 TxC ...........4 TxC GND 12 ...... 7 SG 7 SG ..........12 GND 4 RTS 4 RTS 5 CTS 5 CTS 6 DSR 6 DSR 20 DTR 20 DTR GND (shell)....... 1 GND 1 GND ..... (shell) GND (Cable Shield) (Cable Shield) (HD-15 Male) (DB-25 Male) (DB-25 Male) (HD-15 Female) ============================================================ ============================================================ FIGURE 2 RS422 Synchronous Modem Cable Specs. ============================================================ (LOCAL) (REMOTE) 128-Port Controller RS-422 RS-422 Synchronous Synchronous Synchronous Concentrator Port Modem Modem "IN" Port RxD - 1 .......... 6 - RD 6 - RD ......... 6 - RxD RxD + 2 .......... 24 + RD 24 + RD ......... 7 + RxD RxC - 4 .......... 8 - RT 8 - RT ......... 9 - RxC RxC + 5 .......... 26 + RT 26 + RT ........ 10 + RxC TxD - 6 .......... 4 - SD 4 - SD ......... 1 - TxD TxD + 7 .......... 22 + SD 22 + SD ......... 2 + TxD TxC - 9 .......... 5 - ST 5 - ST ......... 4 - TxC TxC + 10 ......... 23 + ST 23 + ST ......... 5 + TxC GND 12 ......... 19 GND 19 GND ........ 12 GND (HD-15 Male) (DB-37 Male) (DB-37 Male) (HD-15 Female) =========================================================== IBM 128-PORT CONTROLLER REMOTE RAN CONFIGURATIONS This document is subject to change at any time and is meant as a reference only. It is provided "as is" by the IBM Printer/Async support team as an aide to customers and no warranty is expressed or implied by IBM. These configurations were tested with the following hardware and software: o IBM RISC System model 520 o AIX 3.2.3 Extended with all necessary 128-Port PTFs applied o One 128-Port Controller and four (4) RANs Debugging 128-Port Remote 3 09/06/96 o Two 232 Sync modems o 128-Port lines configured for a speed of 14.4K o Eight-wire cabling The "T" in these figures represents a terminator plug. To change the 128-port controller settings, use the command "smit chg128psync". NOTE: After making changes to 128-port lines via the above SMIT command,you should issue the "cfgmgr -v" command on the command line. RANs may not show as "available", otherwise. 128-port 232 Sync Controller -------| Modem |---- / 232/Sync -----| Modem |-------- NODE 1 ----- T Line 1 Cable Type [ 8 ] Node 1 Comm Mode [232_modem] Node 2 Comm Mode [232_modem] Node 3 Comm Mode [direct] Node 4 Comm Mode [direct] =========================================================== 128-port 232/Sync Controller -------| Modem |---- / 232/Sync -----| Modem |------- NODE 1 ----- NODE 2 ---- T Line 1 Cable Type [ 8 ] Node 1 Comm Mode [232_modem] Node 2 Comm Mode [direct] Node 3 Comm Mode [232_modem] Node 4 Comm Mode [direct] ============================================================ 128-port 232/Sync Controller -------| Modem |---- / 232/Sync -----| Modem |------- NODE 1 ----- NODE 4 ---- T Line 1 Cable Type [ 8 ] Node 1 Comm Mode [232_modem] Node 2 Comm Mode [direct] Node 3 Comm Mode [232_modem] Node 4 Comm Mode [direct] =========================================================== Debugging 128-Port Remote 4 09/06/96 128-port 232/Sync Controller -------| Modem |---- / 232/Sync -----| Modem |-------- NODE 4 ----- T Line 1 Cable Type [ 8 ] Node 1 Comm Mode [232_modem] Node 2 Comm Mode [232_modem] Node 3 Comm Mode [direct] Node 4 Comm Mode [direct] 128-port 232/Sync Controller ---- NODE 1 ------| Modem |---- / 232/Sync -----| Modem |-------- NODE 2 ---- T Line 1 Cable Type [ 8 ] Node 1 Comm Mode [direct] Node 2 Comm Mode [232_modem] Node 3 Comm Mode [232_modem] Node 4 Comm Mode [direct] =========================================================== 128-port 232/Sync Controller ---- NODE 1 ------| Modem |---- / 232/Sync -----| Modem |-------- NODE 4 ---- T Line 1 Cable Type [ 8 ] Node 1 Comm Mode [direct] Node 2 Comm Mode [232_modem] Node 3 Comm Mode [direct] Node 4 Comm Mode [232_modem] =========================================================== Debugging 128-Port Remote 5 09/06/96 128-port 232/Sync Controller ---- NODE 1 ------| Modem |---- / 232/Sync -----| Modem |-------- NODE 2 ----- | | T ----- NODE 3 ----- Line 1 Cable Type [ 8 ] Node 1 Comm Mode [direct] Node 2 Comm Mode [232_modem] Node 3 Comm Mode [direct] Node 4 Comm Mode [232_modem] ========================================================= 128-port 232/Sync Controller ---- NODE 1 ------| Modem |---- / 232/Sync -----| Modem |-------- NODE 3 ----- | | T ----- NODE 4 ----- Line 1 Cable Type [ 8 ] Node 1 Comm Mode [direct] Node 2 Comm Mode [232_modem] Node 3 Comm Mode [direct] Node 4 Comm Mode [232_modem] ========================================================= 128-port 232/Sync Controller ---- NODE 1 ---- NODE 2 ----| Modem |----- / 232/Sync -----| Modem |---- NODE 3 -- | | T ----- NODE 4 -- Line 1 Cable Type [ 8 ] Node 1 Comm Mode [direct] Node 2 Comm Mode [direct] Node 3 Comm Mode [232_modem] Node 4 Comm Mode [direct] Suggested Reading: "AIX Version 3.2 System Management Guide: Communications and Networks" (GC23-2487-00) Debugging 128-Port Remote 6 09/06/96 READER'S COMMENTS Please fax this form to (512) 823-4009, attention "AIXServ Informa- tion". 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