Hi,
Being new to Tivoli, I am somewhat puzzled by the way it works. Here are
some problems I have that maybe you have an explanation for :
1) My network has a relatively simple IP addressing scheme :
* subnet of 255.255.255.0 for all ethernet interfaces
* a central site with a Layer3 switch (IBM 8274) having ip addresses of
10.20.1.x, 10.20.2.x, 10.20.3.x, 10.20.4.x to form different IP networks
* on subnet 10.20.3.x and 10.20.4.x, eight IBM 8271 switches (4 on each
subnet)
* On subnet 10.20.2, a Cisco 2503 router connecting to a Frame Relay
network
* About 30 remote sites, with Cisco 1603 routers connecting to the FR
network. Networks are numbered 10.20.40.x, 10.20.41.x, and so on
Here are *some* of the problems I encouter when running the discovery
process :
1) Although all the 8271 switches have the SAME config (except for IP addr
of course), for ONE and only ONE of them Tivoli creates a connexion between
the 8271 switch and the 8274 switch. My question is : why for ONE of them ?
Is there any logical reason ?
2) From time to time the discovered Cisco routers mention a "bad mask", with
255.0.0.0 instead of 255.255.255.0. For this reason, netview discovers an ip
network numbered "10", instead of a series of networks numbered "10.20.40"
and so on. When i use "snmpwalk" to check what snmp returns, I do get the
correct 255.255.255.0 netmask.
3) THIS ONE HAPPENS ALL THE TIME : If I happen to hand-modify some element
of a discovered device, I lose some information : Events for that element
don't display anymore, and I also lose the uptime and "general" snmp info
(syslocation etc). I first did this for an Ascend Max unit : since there was
no OID_TO_TYPE entry for the ascend it would appear as "BAD OID". I correcte
the OID_TO_TYPE file then stopped and restarted NETview and kept waiting
hours; the status of the Ascend never got corrected. So I tried to
hand-modify the information... and the above data disappeared.
Well this seems like A LOT of strange behaviour, I suppose I miss a key
point but I really believe Tivoli works rather strangely...
Last info I am running Netview IT director edition on a NT Workstation :
Pentium II - 333 / 160 Mb Ram / 8 Gb disk - NT 4.0 SP5.
Anybody has an idea ? Help appreciated !!!
Best regards,
Eric Granados
NETsite S.A.
Mailto:Eric.Granados@NETsite.be
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