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Re: NetView over XWindows?

To: nv-l@lists.tivoli.com
Subject: Re: NetView over XWindows?
From: Leslie Clark <lclark@US.IBM.COM>
Date: Thu, 3 Feb 2000 15:29:46 -0500
That would fall into the category of things that can't work well
on a R/O map, like Collections based on status, whose
membership changes. If it involves adding and deleting symbols
on the map, it won't work in a R/O map. But it won't work in a r/o
map even if  you have a r/w map open somewhere else. I can
see that the more we get dynamic map function into the product,
the less use we will want to make of r/o maps.

I just wanted to clarify this myth that the flow of  IP status to r/o maps
 was somehow dependant on the activity of r/w maps. Thanks,

So now if you are having trouble getting status, you know you need
to look further for the cause.


Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking

We just noticed an anomaly related to Status and R/O maps earlier this
Cisco routers with virtual HSRP interfaces don't work well with R/O maps.
When an HSRP failover occurs from router A to router B, NetView deletes the
HSRP interface from router A, and adds it to router B on a R/W map.  On a
R/O map the HSRP interface just turns red on router A, and stays red, even
though that IP address CAN be PINGed.  Refreshing the map does "correct"
problem, i.e. the HSRP interface will show up green on router B.

Joel Gerber - I/T Networking Professional - USAA Information Technology Co.
- San Antonio, TX
* (210)456-4231         * mailto:Joel.Gerber@USAA.com   "

        -----Original Message-----
        From:   James Shanks [SMTP:James_Shanks@TIVOLI.COM]
        Sent:   Thursday, February 03, 2000 11:44
        To:     NV-L@UCSBVM.UCSB.EDU
        Subject:        Re: NetView over XWindows?

        There are two issues here, not one.
        (1) How does NetView work over a normal X GUI, and
        (2) How does NetView work over a particular emulated X GUI.

        I can answer the first.  I don't know about the second.  We do not
use emulators
        on a regular basis, though some individuals do, and we do not test
the product
        with them.  Our job is done when the X GUI works.  It is up the
particular brand
        of X emulator to reflect that on the emulated display.

        Do you need a read-write map open to see status updates on a
read-only map?
        The answer is "no".

        For an already-discovered object, present on the map at the time it
opened, the
        icons will change color as status is updated.  I just tried it with
the 5.1.2
        boxes on my desk.   I opened the only map read-only (netview -ro),
did a locate
        and opened the segment submap and the collections submap (the
collection was on
        SNMP-supported objects), and saw my other box (this one I am using
to send notes
        with).  It was green and normal.  I simply shut it down and watched
the other
        box, the one with the open read-only map, and waited for the events
to come into
        the event display which indicated it was down.  The icon on both
submaps I had
        opened turned red as expected when the events were in the display.
I then
        powered up the down box and shortly thereafter netmon noticed it,
and once again
        I got the Up events and the icons turned green at about the same
time.  This
        proves conclusively that status will propagate correctly to a
read-only map when
        there is no read-write one opened.

        Now, if this isn't what you see on your X GUI then you have a
problem that you
        should notify NetView Support about.  Note that I am not talking
about devices
        discovered after your read-only map is opened, or about devices
coming and going
        into collection submaps based on status.  A read-only map will not
        an icon without a refresh, but if we are talking about just the
color of an
        existing object, this should propagate fine.

        Hope this helps

        James Shanks
        Tivoli (NetView for UNIX) L3 Support

        Leslie Clark <lclark@US.IBM.COM> on 02/03/2000 10:58:50 AM

        Please respond to Discussion of IBM NetView and POLYCENTER Manager
on NetView

        To:   NV-L@UCSBVM.UCSB.EDU
        cc:    (bcc: James Shanks/Tivoli Systems)
        Subject:  Re: NetView over XWindows?

        About this business of needing a r/w map open for r/o maps to work:

        I have heard this rumor here before, but I have trouble believing
that it
        is working as designed.  Has anyone taken it up with support and
        officially notified that a stand-alone R/O map will not reflect
        correctly? I am just about positive that this has not always been
the case,
        and I don't see it documented as a feature....

        If I were not getting status updates, I would suspect that the
        for that user had failed, possibly due to insufficient ulimits.

        I would appreciate word from anyone who has been given this
        by Support, as opposed to just observing what works and living with

        (Now watch me get in trouble with Support for asking questions like


        Leslie A. Clark
        IBM Global Services - Systems Mgmt & Networking


        If you do not have read/write access to the map it will not update
        you do a map refresh.

        -----Original Message-----
        From: Discussion of IBM NetView and POLYCENTER Manager on NetView
        [mailto:NV-L@UCSBVM.ucsb.edu]On Behalf Of Mark Marcelissen
        Sent: Wednesday, February 02, 2000 3:06 PM
        To: NV-L@UCSBVM.ucsb.edu
        Subject: NetView over XWindows?

        I am attempting to have a NT client off a NetView for UNIX using

        I am sending the DISPLAY back to my NT desktop from the NetView for
        , it displays OK and the Menus work, BUT, the maps or submaps do
        with status changes. For example: Nodes is a critical state.

        A  FILE-REFRESH MAP updates the screen.

        A NetView session is already running when netview is executed from
        command line.
        Has anyone attempted this or is this a known problem?

        Mark M.

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