1. In NetView for UNIX you can configure any agent trap (not a NetView trap) to
be a different category and with a different status value than when it was first
added to trapd.conf. If you make an agent trap a Status Event and specify a
status other than Default Status, then as long as the Event Window is open by
the GUI with the read-write map, nvevents will change the status of the host
which sent that trap on the map. This is NOT recommended for objects which
netmon monitors because while the map status/color is changed, the object and
topology databases are not, and netmon will ignore whatever you have done in
this regard. He will continue to ping and status poll as if nothing has
happened and will issue his traps and change status appropriately. This primary
use of this is so that you can add your own objects to the map and control them
when netmon doesn't. You should not be using traps like Cisco's link down to
change the status on your router, for example.
2. Attended MLM is something I know nothing about. In other situations, as I
explained, NetView does not forward traps to MLMs at all, but they forward to
him. I suspect that attended MLMs may be different, because in NT, trapd
cannot forward events to other boxes. The trapfrwd daemon does that. So it
would make sense that an attended MLM (which is netmon and midmand working
together in the same NT box) would use MLM's trap forwarding capability. But I
don't know how it works nor do I know if what you are seeing is normal or not.
Perhaps someone else with experience with attended MLMs can answer your question
if you put it in those terms
James Shanks
Tivoli (NetView for UNIX) L3 Support
"Sin Wai Yee, Maggie" <mwysin@KCRC.COM> on 10/27/99 09:54:27 PM
Please respond to Discussion of IBM NetView and POLYCENTER Manager on NetView
<NV-L@UCSBVM.UCSB.EDU>
To: NV-L@UCSBVM.UCSB.EDU
cc: (bcc: James Shanks/Tivoli Systems)
Subject: Re: FW: Some Questions about network device 's trap
Thanks
1. I can't catch the meaning of the last sentence. Is it mean that the
netview for unix can change the status of the map immediately after
receiving device's trap ( no based on its own polling ). If it can, how can
I set this.
or
speaking in other words
The status will be changed immediately by interpreting device 's trap ,
not by regular polling
2. Sorry, I should explain more clearly. The netview for nt now act as an
attended mlm. When a device's trap arrived, the trap event can only be
displayed in the event browser of the netview for nt. I haven't set any
filter in the mlm. All events received by netview for nt supposed will be
forward to the mlm. And then forward to the central netview. By my
observation, only the trap generated by netview will be forwarded to mlm (
no any trap by other device ).
-----Original Message-----
From: James Shanks [mailto:James_Shanks@TIVOLI.COM]
Sent: Wednesday, October 27, 1999 8:07 PM
To: NV-L@UCSBVM.ucsb.edu
Subject: Re: FW: Some Questions about network device 's trap
1. Correct. NetView does nothing with traps from other devices generally.
It
relies on pings and SNMP get. That is why setting your SNMP Configuration
is so
important. Things that NetView monitors (interfaces, nodes, etc) change
status
on the map because netmon tells ovtopmd to change it. In general, base
NetView
would work just fine even if no other agents in the network sent any traps.
This is particularly true in NT. You can use agent traps to change the
status
of items you have added to the map (things that NetView does not monitor)
on
UNIX but not on NT.
2. I believe you have this backwards. MLMs send their traps to NetView.
NetView does not send any back that I am aware of. If you want traps to go
to
the MLM, you can do that, and it can in turn send them on to NetView , and
even
filter which traps get forwarded. Many folks make use of the trap filtering
capability of MLM to keep unwanted traps out of the NetView box.
James Shanks
Tivoli (NetView for UNIX) L3 Support
"Sin Wai Yee, Maggie" <mwysin@KCRC.COM> on 10/27/99 05:04:37 AM
Please respond to Discussion of IBM NetView and POLYCENTER Manager on
NetView
<NV-L@UCSBVM.UCSB.EDU>
To: NV-L@UCSBVM.UCSB.EDU
cc: (bcc: James Shanks/Tivoli Systems)
Subject: FW: Some Questions about network device 's trap
> 1/ a device sent a down trap to netview. The map will not immediately
> reflect the down trap of the serial trap.
>
> Question : Is the map reflection depends on its own monitoring ? not
> by the trap sent from other device.
>
> 2/ a device send trap to netview for nt ( with mlm installed ). A trap
> event will be seen in the event brower. But the trap event do not occur in
> the mlm trap log smtrap.log.
>
> Question : do the netview for nt only send the internal netview trap
> to mlm ( not the trap from other device ) ?
>
>
> Can anyone clarify the above two question for me ?
>
> Thanks
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