We've had to reboot E7s before because of DHCP snooping failures on ONTs.
_____________________________
From: [email protected]
Sent: Friday, September 30, 2016 10:19 AM
Subject: Re: [AFMUG] Need help with DHCP problem
To: <[email protected]>
We didn’t do any Calix changes and we don’t think they can push a change.
From: Paul Stewart Sent: Friday, September 30, 2016 10:07 AMTo: [email protected]
Subject: Re: [AFMUG] Need help with DHCP problem Yup … Four steps to DHCP that
you should see on the capture DiscoveryOfferResponse Ack (DORA for short) Once
the Ack is completed then the ONT should have an IP and only come back looking
for a new IP near expiry and/or a power event etc… I’d suggest testing against
the DHCP server with a PC with short expiry as noted .. if that works fine then
go further upstream and repeat. really sounds like an ONT issue - did you do
any changes with Calix firmware or anything like that? Just some guesses Paul
On Sep 30, 2016, at 10:01 AM, Adam Moffett <[email protected]> wrote:
That was supposed to say "if you can ping the ONT from the DHCP server"
stupid fingers can't keep up with stupid brain. ------ Original Message
------ From: "Adam Moffett" <[email protected]> To: "Animal Farm"
<[email protected]> Sent: 9/30/2016 9:59:04 AM Subject: Re: [AFMUG] Need help
with DHCP problem You're doing exactly what I would do. The
renewal is unicast, so if you can the ONT from the DHCP server then the
unit should be able to renew. My guess would be something in the middle
either dropping the request from the client or dropping the ack from the
server. Maybe a misbehaving switch or misconfigured firewall rule.
Wireshark and/or logs on one end or the other might tell you which step is
not happening, but they won't tell you which device is dropping the ball.
I'm guessing you'll run wireshark, see a missing packet from somebody and
then have to packet capture at points in between to see if the missing
packet is present or not at that point. ------ Original
Message ------ From: "Chuck McCown" <[email protected]> To: "Animal Farm"
<[email protected]> Sent: 9/29/2016 11:12:12 PM Subject: [AFMUG] Need help
with DHCP problem I have not dug into the entrails of DHCP
since NAT was added to Canopy, so long time ago. I have Calix ONTs that
are going away when their DHCP reservations expire. They normally get
them from DHCPatriot. People lose service, they call, we reset the ONT
and service comes back. Started a couple of days ago, no
network changes to speak of. But about 30% are having the problem.
There is no way the DHCPatriot could be causing this is there?
Once it hands out an IP and a reservation time, it is out of the loop,
right? I suggest setting up an ONT with a reservation time of 1
hour then wireshark the DHCPatriot to see of the ONT ever comes knocking,
or if it does, what is going on between those two. Any
other troubleshooting ideas out there? Going to bed, hopefully there
will be a bunch of brilliant posts in the morning leading us directly to
the bad actor.
