I understand and that is very plausible had the router actually
rebooted but all indications are that it didn't actually reboot despite
the fact the uptime counter restarted. I have my PPPoE session timeouts
set to 24 hours so no PPPoE session lasts more than 24 hours at a time,
except for those that are configured with a 'sticky static' ip address.
Cacti shows that the router has(had) been up 11,930 hours (496 days+)
until 2:45am when suddenly it went back to 0 and nagios triggered
because the uptime went backwards. However the syslogs show the router
was happily chugging away and PPPoE sessions continue to timeout because
they had reached their 24 hour session limit.
Right now it doesn't appear to be service effecting, but I'm
questioning whether this is a sign of worse things to come - soon. I
hate to reboot this router especially with a long weekend coming up.
Some DSL modems don't like to reconnect their sessions requiring the
customer to reboot their modems to get them to reconnect.
So I guess that is what I am asking - is if anyone has seen this before
where the router uptime goes back to 0, but the router didn't reboot.
And if so, did the router puke soon afterwards?
On 2012-08-29 18:25, Ty Featherling wrote:
No what I think he is saying is that the PPPoE sessions might have
started
before the router synced with a NTP server. Since the sessions
started
with
a bogus time in the past and the clock fixed itself the uptime adds
the
difference throwing it off significantly.
-Ty
On Aug 29, 2012 5:11 PM, "Robert Haas" <[email protected]>
wrote:
No, the router never rebooted so the sessions never dropped. One of
those sessions listed with a 496 day uptime is my house and I know
my
session has not been up that long. -----Original Message----- From:
[email protected] [4]
[mailto:[email protected] [5]] On Behalf Of Randy
Cosby Sent: Wednesday, August 29, 2012 5:01 PM To: Mikrotik
discussions
Subject: Re: [Mikrotik] Odd Just a guess... Did the pppoe sessions
possibly come up BEFORE the Mikrotik device synced time with an ntp
server? On 8/29/2012 3:47 PM, Robert Haas wrote:
Anyone see this before? I got an alert that one of our core routers
rebooted at 2am this morning, but no alarms from any attached
devices
as being unreachable etc. Got up
and
logged in and the uptime was 8 minutes or so. This afternoon I had
a
chance to investigate the router more. The router
has
NOT rebooted - log files lack any indication I would expect to see
from a router reboot (hundreds of PPPoE session coming back up) and
attached devices interface statistics show no loss of link. Looking
at the PPPoE active sessions, some of the session are showing u
496
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