[HECnet] Asymmetric connectivity in a cluster

Johnny Billquist bqt at softjar.se
Sun Apr 22 16:11:02 PDT 2018


I haven't really looked at what this might be, but one reflection is that ncp is not really the right tool of you're running decnet+.

  Johnny 


dwe-6006 at philtest.org skrev: (23 april 2018 01:01:28 CEST)
>I'm not sure that asymmetric is the correct description but I can't
>think of
>a better term. I am using SIMH and I have a two node cluster (with a
>quorum
>disk) the two nodes have a common system disk. 
>The two nodes are RODNEL (1.1) booting from SYS0 and ADV2 (1.3) booting
>from
>SYS2. Both are running DECnet Plus both are running Multinet for the IP
>stack. At one time there was also a node (never actually a member of
>the
>cluster called HCBVAX (1.2) it booted from SYS1 but it no longer
>exists.
>The nodes are connected over an Ethernet and the MAC addresses are the
>ones
>that I would expect AA-00-04-00-01-04 (1.1) and AA-00-04-00-03-04 (1.3)
>HCBVAX was AA-00-04-00-02-04 (1.2)
>I can login to RODNEL and "set host adv2" with no problem, I can login
>to
>ADV2 and "set host rondel" with no problem. On each of the nodes I can
>"show
>cluster" and I see what I expect to see with no errors. While logged in
>to
>RODNEL the command "moni cluster" works fine. While logged in to ADV2
>the
>wheels seem to fall off the bus - "show cluster" is fine but "moni
>cluster"
>isn't Any help would be appreciated. This is the information that I
>have
>gathered so far (I am not happy with the forwarding address in the
>error
>message from "moni proc" on ADV2 which seems to arise from RODNEL 
>
>--Dave
>
>View of Cluster from system ID 1027  node: ADV2            22-APR-2018
>22:24:50
>+-----------------------------+
>|      SYSTEMS      | MEMBERS |
>+-------------------+---------|
>|  NODE  | SOFTWARE |  STATUS |
>+--------+----------+---------|
>| ADV2   | VMS V7.3 | MEMBER  |
>| RODNEL | VMS V7.3 | MEMBER  |
>+-----------------------------+
>^Z
>$
>$ moni cluster
>%MONITOR-I-ESTABCON, establishing connection to remote node(s)...
>%%%%%%%%%%%  OPCOM  22-APR-2018 22:24:56.75  %%%%%%%%%%%
>Message from user SYSTEM on RODNEL
>Event: Address Unreachable PDU Discard from: Node LOCAL:.RODNEL
>Routing,
>        at: 2018-04-22-23:24:56.740-04:00Iinf
>        Discard Reason=Destination Addrs Unknown,
>        Source Address=49::00-01:AA-00-04-00-03-04:21,
>        Forwarding Address=49::00-01:AA-00-04-00-02-04:21
>        eventUid   FC95D640-467B-11E8-99E1-AA0004000104
>        entityUid  5683CC80-467B-11E8-8004-AA0004000104
>        streamUid  5A113900-467B-11E8-8004-AA0004000104
>
>Still on ADV2 - NCP is odd as well:
>
>$ mcr ncp
>NCP>sho exec char
>
>
>Node Volatile Characteristics as of 22-APR-2018 22:31:17
>
>Executor node = 1.3 (ADV2)
>
>Identification           = DECnet-OSI for OpenVMS
>Management version       = V4.0.0
>Incoming timer           = 0
>Outgoing timer           = 0
>NSP version              = V4.1.0
>Maximum links            = 0
>Delay factor             = 0
>Delay weight             = 0
>Inactivity timer         = 0
>Retransmit factor        = 0
>Routing version          = V2.0.0
>Type                     = nonrouting IV
>Routing timer            = 0
>Subaddresses             = 0
>Broadcast routing timer  = 0
>Maximum address          = 0
>Maximum circuits         = 0
>Maximum cost             = 0
>Maximum hops             = 0
>Maximum visits           = 0
>Maximum area             = 0
>Max broadcast nonrouters = 0
>Max broadcast routers    = 0
>Maximum path splits      = 0
>Area maximum cost        = 0
>Area maximum hops        = 0
>Maximum buffers          = 0
>Segment buffer size      = 0
>Buffer size              = 0
>Pipeline quota           = 0
>Alias maximum links      = 0
>Path split policy        = Normal
>Maximum Declared Objects = 0
>
>
>NCP>show know nodes
>
>
>Known Node Volatile Summary as of 22-APR-2018 22:31:29
>
>Executor node = 1.3 (ADV2)
>
>State                    = on
>Identification           = DECnet-OSI for OpenVMS
>
>
>NCP>def node rodnel
>Node address          (1.1-63.1023): 1.1
>Node name          (1-6 characters): rodnel
>NCP>set node rodnel all
>%NCP-W-UNRCMP, Unrecognized component
>
>
>NCP>set node rodnel
>Node address          (1.1-63.1023): 1.1
>Node name          (1-6 characters): rodnel
>%NCP-W-UNRCMP, Unrecognized component , Node
>
>
>NCP>exit
>
>Whereas RODNEL seems happier:
>
>
>NCP>sho exec char
>
>
>Node Volatile Characteristics as of 22-APR-2018 20:15:29
>
>Executor node = 1.1 (RODNEL)
>
>Identification           = DECnet-OSI for OpenVMS
>Management version       = V4.0.0
>Incoming timer           = 0
>Outgoing timer           = 0
>NSP version              = V4.1.0
>Maximum links            = 0
>Delay factor             = 0
>Delay weight             = 0
>Inactivity timer         = 0
>Retransmit factor        = 0
>Routing version          = V2.0.0
>Type                     = nonrouting IV
>Routing timer            = 0
>Subaddresses             = 0
>Broadcast routing timer  = 0
>Maximum address          = 0
>Maximum circuits         = 0
>Maximum cost             = 0
>Maximum hops             = 0
>Maximum visits           = 0
>Maximum area             = 0
>Max broadcast nonrouters = 0
>Max broadcast routers    = 0
>Maximum path splits      = 0
>Area maximum cost        = 0
>Area maximum hops        = 0
>Maximum buffers          = 0
>Segment buffer size      = 0
>Buffer size              = 0
>Pipeline quota           = 0
>Alias maximum links      = 0
>Path split policy        = Normal
>Maximum Declared Objects = 0
>
>
>NCP>sho kno node
>
>
>Known Node Volatile Summary as of 22-APR-2018 20:15:37
>
>Executor node = 1.1 (RODNEL)
>
>State                    = on
>Identification           = DECnet-OSI for OpenVMS
>
>
>    Node           State      Active  Delay   Circuit     Next node
>                              Links
>
>1.3 (ADV2)                                                 1.1 (RODNEL)
>NCP>sho node adv2 char
>
>
>Node Volatile Characteristics as of 22-APR-2018 20:16:02
>
>Remote node =   1.3 (ADV2)
>
>Service password         = 0000000000000000

-- 
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