RE: multicast [7:47591]

2002-06-28 Thread Lopez, Robert
In regards to the OSI specs, is it safe to say that IP multicasts exist at layers 2 and 3? -Original Message- From: Priscilla Oppenheimer [mailto:[EMAIL PROTECTED]] Sent: Friday, June 28, 2002 1:15 AM To: [EMAIL PROTECTED] Subject: Re: multicast [7:47591] At 10:14 PM 6/27/02, Howard C

Re: multicast [7:47591]

2002-06-27 Thread Steven A. Ridder
I'm going to say the addresses are L3, udp used as transport is L4, and the apps are L7, with some of the formats such as MPeg2 L6. Lopez, Robert wrote in message [EMAIL PROTECTED]">news:[EMAIL PROTECTED]... At what OSI layer do IP multicasts lie? Reading through CCO has made me more

RE: multicast [7:47591]

2002-06-27 Thread Raul F. Fernandez
Robert, Layer 3 is where multicasting takes place. Raul -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Lopez, Robert Sent: Thursday, June 27, 2002 4:42 PM To: [EMAIL PROTECTED] Subject: multicast [7:47591] At what OSI layer do IP multicasts lie?

Re: multicast [7:47591]

2002-06-27 Thread Priscilla Oppenheimer
At 04:42 PM 6/27/02, Lopez, Robert wrote: At what OSI layer do IP multicasts lie? Reading through CCO has made me more doubtful in my choices. IP multicasts are sent to a layer 3 IP multicast address. That address is converted to a data-link-layer multicast address. The Internet Assigned

Re: multicast [7:47591]

2002-06-27 Thread Howard C. Berkowitz
At 6:36 PM -0400 6/27/02, Priscilla Oppenheimer wrote: At 04:42 PM 6/27/02, Lopez, Robert wrote: At what OSI layer do IP multicasts lie? Reading through CCO has made me more doubtful in my choices. IP multicasts are sent to a layer 3 IP multicast address. That address is converted to a

Re: multicast [7:47591]

2002-06-27 Thread Michael L. Williams
Did you copy/paste that right out of a textbook? =) Before I even saw anything indicating that you authored that post, I got about 1/2 way through the paragraph and was thinking to myself This had to be from Priscilla. Mike W. Priscilla Oppenheimer wrote in message [EMAIL

RE: multicast [7:47591]

2002-06-27 Thread Lopez, Robert
A thanks to everyone who replied to this topic... -Original Message- From: Priscilla Oppenheimer [mailto:[EMAIL PROTECTED]] Sent: Thursday, June 27, 2002 6:36 PM To: [EMAIL PROTECTED] Subject: Re: multicast [7:47591] At 04:42 PM 6/27/02, Lopez, Robert wrote: At what OSI layer do IP

Re: multicast [7:47591]

2002-06-27 Thread Priscilla Oppenheimer
At 10:14 PM 6/27/02, Howard C. Berkowitz wrote: IP multicast gets used for many purposes and those purposes may be at different layers: Sending routing updates (EIGRP, OSPF, RIPv2) - Layer 3 Establishing routing protocol neighbor relationships (EIGRP, OSPF) - Layer 3 Sending multimedia