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The Graveyard - Products No Longer Supported => Routers / COVR => DIR-655 => Topic started by: Mark_KF8RV on March 31, 2012, 08:15:56 PM

Title: Unicasting option?
Post by: Mark_KF8RV on March 31, 2012, 08:15:56 PM

'Use Unicasting' is selected by default in the Dynamic IP (DHCP) connection type.

I turned it off based upon the router's support text since the router gets an IP address from my cable modem.

I don't understand this option at all.  I've searched for data on the topic and I can't make sense of it.

I think I made the correct selection by un-selecting 'Use Unicasting.'

Someone please explain Unicasting to me.

Thanks.

Mark

Title: Re: Unicasting option?
Post by: FurryNutz on March 31, 2012, 09:55:58 PM

Unicast (http://en.wikipedia.org/wiki/Unicast)

Title: Re: Unicasting option?
Post by: Mark_KF8RV on April 01, 2012, 07:13:48 AM

Wiki's article pertains to the network topology.

D-Link wrote:

Use Unicasting:  This option is normally turned off, and should remain off as long as the WAN-side DHCP server correctly provides an IP address to the router. However, if the router cannot obtain an IP address from the DHCP server, the DHCP server may be one that works better with unicast responses. In this case, turn the unicasting option on, and observe whether the router can obtain an IP address. In this mode, the router accepts unicast responses from the DHCP server instead of broadcast responses.

The network topology (routing) is being handle by the DIR-655, not my Cable Modem SB6121.

I remain in the state of being confused, in other words.   

Mark.

Title: Re: Unicasting option?
Post by: FurryNutz on April 01, 2012, 09:15:02 AM

Use what works best for your network. Contact the ISP to see if they recommend using Unicast or not.

Title: Re: Unicasting option?
Post by: XS on May 02, 2012, 12:38:25 PM

Anyone have any more info on unicasting?  I disabled mine the other day.

Title: Re: Unicasting option?
Post by: FurryNutz on May 02, 2012, 12:40:41 PM

Unicast (http://en.wikipedia.org/wiki/Unicast)

Title: Re: Unicasting option?
Post by: FurryNutz on May 02, 2012, 12:46:04 PM

How Unicast IPv4 Routing Protocols and Services Work (http://technet.microsoft.com/de-de/library/cc755330(v=ws.10).aspx)

Title: Re: Unicasting option?
Post by: XS on May 02, 2012, 12:50:08 PM

Yeah I read your link earlier, so if unicasting is unchecked does the router only use multicasting?  If checked does the router use both?

Title: Re: Unicasting option?
Post by: FurryNutz on May 02, 2012, 01:00:40 PM

No idea.  :-\

Title: Re: Unicasting option?
Post by: XS on May 02, 2012, 01:06:03 PM

Yeah not too much documentation on it, big surprise, from reading some articles sounds like it is best to leave it on but D-link support it "off", who knows ???


Anyway, just found this:
"Multicast Streams
    The router uses the IGMP protocol to support efficient multicasting -- transmission of identical content, such as multimedia, from a source to a number of recipients. "

Title: Re: Unicasting option?
Post by: FurryNutz on May 02, 2012, 01:12:56 PM

Ya, haven't hand much time to play with this. I've just left it ON as the default setting. I think there has been some users mentioned that there issues cleared up after turning it off. It's either going to work, make no changes or might do something. Not to complicated.  :-\

Title: Re: Unicasting option?
Post by: FurryNutz on May 02, 2012, 02:02:40 PM

Talked with Harry, said he recommends leaving it and Multicast ON. They don't conflict and allows for greater compatibility. He said not a lot of things use it so really no harm in leaving it on.  ;)

Title: Re: Unicasting option?
Post by: XS on May 02, 2012, 02:20:27 PM

Cool deal fur, Tell Harry thanks!

Title: Re: Unicasting option?
Post by: FurryNutz on May 02, 2012, 02:28:33 PM

 ;) Enjoy.

Title: Re: Unicasting option?
Post by: davevt31 on May 02, 2012, 04:26:30 PM

It's basically an option that can be used if you are having trouble getting a DHCP address from your ISP.  if you have it unchecked and are getting an address from your ISP you can leave it unchecked.  Checking or unchecking only effects the WAN connection to your ISP.