It is actually a new Sonicwall and I do not understand how it could have auto-negotiated to 100/full with a hub???
-------------------------------------------------------------- Goran Jovanovic The LAN Shoppe 2345 Yonge St. Suite 302 Toronto, Ontario, M4P 2E5 Bus: 416-440-1167 x-2113 Cell: 416-931-0688 E-mail: [EMAIL PROTECTED] -------------------------------------------------------------- -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of John Tolmachoff (Lists) Sent: Friday, January 09, 2004 2:06 PM To: [EMAIL PROTECTED] Subject: RE: [WhatsUp Forum] DNS services continuously going down and up Sounds like time for a new firewall. Not only bad, is technically not possible. Something in the firewall must be broken. John Tolmachoff Engineer/Consultant/Owner eServices For You > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:WhatsUp_Forum- > [EMAIL PROTECTED] On Behalf Of Goran Jovanovic > Sent: Friday, January 09, 2004 8:14 AM > To: [EMAIL PROTECTED] > Subject: RE: [WhatsUp Forum] DNS services continuously going down and up > > Hi all, > > Well I thought that I would update you on this problem. > > The problem was that the firewall had negotiated a 100/Full connection > to the hub. This as you all know is bad. It took a bit of digging since > I was focusing on the server and not the firewall. I reset the lint to > 100/half and no more packet loss. I was seeing a constant 10 to 50% > packet loss on the link. > > > > Goran Jovanovic > The LAN Shoppe > 2345 Yonge Street, Suite 302 > Toronto, Ontario M4P 2E5 > Phone: (416) 440-1167 x-2113 > Cell: (416) 931-0688 > E-Mail: [EMAIL PROTECTED] > > > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of TC Roffey > Sent: Friday, January 02, 2004 5:08 PM > To: [EMAIL PROTECTED] > Subject: RE: [WhatsUp Forum] DNS services continuously going down and up > > Or....... > > You're going over a vpn tunnel, right? I've got wug going over a cisco > vpn as well. And cisco says - In order for the tunnel to stay "up", a > certain amount of interesting traffic at sufficient intervals needs to > traverse the tunnel otherwise the vpn routers "times out" and takes down > the tunnel. So, the first dns query from whatever, user or wug, may not > be getting to the dns server. Result, dns service down. Wug tries > again and the service is there because the first query brought the > tunnel back up. > > TC > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Bond, Duncan > Sent: Friday, January 02, 2004 1:49 PM > To: '[EMAIL PROTECTED]' > Subject: RE: [WhatsUp Forum] DNS services continuously going down and up > > > You should also note that if WUG is having the problem, so (most > probably) are the users of the DNS server. This can manifest in slow or > broken sessions; if the users have a backup server defined, transactions > will work, but will be slow because it takes time for the DNS failure to > retry, then switch. We had a similar problem caused by improper duplex > negotiation between DNS server and switch; WUG accurately reported > intermittency on the server. > > -----Original Message----- > From: Daniel Donnelly [mailto:[EMAIL PROTECTED] > Sent: Friday, January 02, 2004 4:41 PM > To: [EMAIL PROTECTED] > Subject: Re: [WhatsUp Forum] DNS services continuously going down and up > > > Goran, > > Have you tried increasing the Timeout on that device? I'd double it, for > now... > > I suspect some unknown load (Exchange??) on the server is causing a > random delay is answering the DNS query. Setting a longer timeout may > cause the device to be seen as up more often . In other words, the > longer timeout may help, but may not make the problem go away, just > won't show up as often in WUG. > > If the longer timeout helps, then I'd look more carefully at that server > for resource issues... > > Dan Donnelly > > ----- Original Message ----- > From: "Goran Jovanovic" <[EMAIL PROTECTED]> > To: <[EMAIL PROTECTED]> > Sent: Friday, January 02, 2004 9:01 AM > Subject: RE: [WhatsUp Forum] DNS services continuously going down and up > > > It is a Windows 2000 server, SP 4 running Exchange 2000 SP3 for about 20 > users. Not really high load at all. > > > Goran Jovanovic > The LAN Shoppe > 2345 Yonge Street, Suite 302 > Toronto, Ontario M4P 2E5 > Phone: (416) 440-1167 x-2113 > Cell: (416) 931-0688 > E-Mail: [EMAIL PROTECTED] > _____ > > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of John > Tolmachoff > (Lists) > Sent: Friday, January 02, 2004 2:05 AM > To: [EMAIL PROTECTED] > Subject: RE: [WhatsUp Forum] DNS services continuously going down and up > > Is the DNS server a Windows server 200x server under very high query > load with a large cache? > > > > John Tolmachoff > Engineer/Consultant/Owner > eServices For You > > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Goran > Jovanovic > Sent: Thursday, January 01, 2004 8:52 PM > To: [EMAIL PROTECTED] > Subject: [WhatsUp Forum] DNS services continuously going down and up > > Hi All and Happy New Year to everyone, > > I am monitoring a number of my client's servers via a VPN tunnel and > there is this one server that is setup just like all the others but it > keeps reporting that the DNS services goes down. Then on the next poll > (or so) the services comes back to life. Life is fine for 30 to 90 > minutes when the DNS goes down again. I have the alarm trigger set to 4. > I have checked the server and there are no entries in the event log for > problems. > > Any thoughts on what could be causing the DNS to fail and then reappear? > > Thanx > > Goran Jovanovic > The LAN Shoppe > 2345 Yonge Street, Suite 302 > Toronto, Ontario M4P 2E5 > Phone: (416) 440-1167 x-2113 > Cell: (416) 931-0688 > E-Mail: [EMAIL PROTECTED] > > > Please visit http://www.ipswitch.com/support/mailing-lists.html > to be removed from this list. > > An Archive of this list is available at: > http://www.mail-archive.com/whatsup_forum%40list.ipswitch.com/ > > Please visit http://www.ipswitch.com/support/mailing-lists.html > to be removed from this list. > > An Archive of this list is available at: > http://www.mail-archive.com/whatsup_forum%40list.ipswitch.com/ > > Please visit http://www.ipswitch.com/support/mailing-lists.html > to be removed from this list. > > An Archive of this list is available at: > http://www.mail-archive.com/whatsup_forum%40list.ipswitch.com/ > > > Please visit http://www.ipswitch.com/support/mailing-lists.html > to be removed from this list. > > An Archive of this list is available at: > http://www.mail-archive.com/whatsup_forum%40list.ipswitch.com/ Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/whatsup_forum%40list.ipswitch.com/ Please visit http://www.ipswitch.com/support/mailing-lists.html to be removed from this list. An Archive of this list is available at: http://www.mail-archive.com/whatsup_forum%40list.ipswitch.com/
