[VoIP] CON cast

[Lee Spenadel]

Greg, you are correct.  However, I've seen all too often that when Verizon
or ConCast (here on the Cape) change the IP address (through lease
expiration or subnet change on their end) that consumer grade routers like
Linksys 4 port router/switch do not pick up the new address.  They sit there
in a state where it can't renew its DHCP lease.  It's a standards compliant
router with bugs.  So in theory it should release/renew properly, but we all
know how that goes......



-----Original Message-----
From: voip-bounces at ckts.info [mailto:voip-bounces at ckts.info] On Behalf Of
Greg Blakely
Sent: Saturday, May 12, 2007 6:59 PM
To: jnovack at stromberg-carlson.org; Voice Over IP Tandem for Analog Switches
Subject: Re: [VoIP] CON cast

When an IP address is handed out via DHCP, the server notifies the
client how long the lease is.  At somewhere around halfway to the
expiration, the client *should* start asking the server for a renewal.
If the address is available, a new lease is agreed upon, and the clocks
reset.

If, however, Comcast simply shut down one server and fired up another,
then, as Lee suggested, your best bet would be to simply power cycle
your router.  It will then re-discover (or discover for the first time)
the DHCP server on your subnet.

On the other hand, if Comcast's servers haven't changed, your router, if
it is RFC compliant, will ask for a new address 1/2-way through its
lease.  If not, it's not really Comcast that is at fault. 

> -----Original Message-----
> From: voip-bounces at ckts.info [mailto:voip-bounces at ckts.info] 
> On Behalf Of John Novack
> Sent: Saturday, May 12, 2007 1:10 PM
> To: Lee Spenadel
> Cc: 'Voice Over IP Tandem for Analog Switches'
> Subject: Re: [VoIP] CON cast
> 
> 
> 
> Lee Spenadel wrote:
> > John,
> >
> > You don't need to go to the setup screen - just power cycle 
> the router by unplugging the power connector from the back of it.  
> In my case it is as easy to do a DHCP release and renew
> > I see this problem with customers.  A firmware update to 
> the router may help.  
> Doesn't seem to be available.
> In addition, this from Linksys:
> 
> Based on customer feedback, North America E-mail support will 
> be discontinued starting May 15th, 2007. E-mail received 
> before that date will be handled and responses will be sent 
> out until June 1st, when the email system will be shut down 
> completely.
> > It could be the router itself.  
> Only seems to happen when CON cast places me in a specific IP 
> range with a short lease time!!
> > Other brands of consumer grade routers do this.  I rarely see this 
> > behavior with more expensive routers like those from sonic.
> >   
> I have a used SonicWall router here, but have yet to see if I 
> can set it up I also have a computer with Monowall installed, 
> but couldn't figure out how to open up the port for CNET.
> I SUPPOSE I could also use my Vonage V1005V.
> Or simply tough it through until CONCAST stops playing games.
> 
> JN
> 
> > Lee
> >
> > -----Original Message-----
> > From: voip-bounces at ckts.info 
> [mailto:voip-bounces at ckts.info] On Behalf 
> > Of John Novack
> > Sent: Friday, May 11, 2007 10:25 PM
> > To: Voice Over IP
> > Subject: [VoIP] CON cast
> >
> > CON cast is at it again. They seem to be on a mission to 
> change my IP 
> > address and a short DHCP lease time, then my Linksys router 
> fails to 
> > ask for a renewal, so all goes dead until I goose it from 
> the setup screens.
> > They have gone through this before, then all settles down 
> for a while.
> > I suppose their IT boys are up to something, but it sure is a pain.
> > If you find my CNET connection down at a given time, that 
> is probably 
> > the reason
> >
> > Wonder if I went to another brand of router things would improve?
> >
> > John Novack
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> >
> >
> >   
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