Well, the way I read /usr/OV/doc/RouterFaultIsolation.htm, the recovery is
started by a successful status poll of the root-cause router. Setting -k 2
(that's the little k, not the big K) to reduce polling to unreachable
routers
does not affect the polling of the router that is only Marginal, the one
that
is causing the perceived outage. The affected area would remain
white until the regular 5-minute (or whatever) poll of the down interface
on that device gave netmon cause to initiate the recovery process, and
go try everything again. Or you can ping something, and if it works, the
recovery starts.
That said, I don't understand why netmon would be doing continuous
polling of the devices with the admin-down interfaces. Although I do
understand the intuitive action you took. Are you sure that your
netmon settings are now -K 1, -k 2? Or are you using only -K 2, which
depending on how the code is written might just mean that you
turned off RFI altogether (eg. -K 1 is on, anything else is off)
Cordially,
Leslie A. Clark
IBM Global Services - Systems Mgmt & Networking
(248) 552-4968 Voicemail, Fax, Pager
"Westphal, Raymond" <RWestphal@erac.com>@tkg.com on 02/26/2001 11:21:39 AM
Please respond to IBM NetView Discussion <nv-l@tkg.com>
Sent by: owner-nv-l@tkg.com
To: "NV List (E-mail)" <nv-l@tkg.com>
cc:
Subject: [NV-L] netmon and -K 2
Hello Everyone.
We've had a problem with NetView doing continuous snmp polls of several of
our Cisco frame relay hub routers. The reason for the constant polls is
because there were 5 administratively down HSSI sub interfaces. These are
sub-interfaces that will soon be activated for new installs. I changed the
netmon startup option from -K 0 to -K 2. And the constant polling
immediately stopped.
Status polling is at 5 minute default and there is no SNMP status polling
setup in the seed file.
Here are my questions:
If I suppress pings (and SNMP requests) to unreachable routers - how does
NetView learn that an interface is now reachable?
How does this affect updates to the map? When a site does come back up
after
a circuit failure for instance.
Thanks in advance.
Ray Westphal
Enterprise Rent-A-Car.
_________________________________________________________________________
NV-L List information and Archives: http://www.tkg.com/nv-l
|