Mapping class D to Ethernet physical address

Mapping class D to Ethernet physical address

NewsGroups | Search | Tools
 comp.dcom.lans.ethernet  Post an article  get this group's latest topics as an RSS feed add this group's latest topics to your My MSN content add this group's latest topics to your My Yahoo content  add this group's latest topics to your Google content  YahooMyWeb Yahoo!  Google Google  Windows Live Favorites Windows Live  del.icio.us del.icio.us  digg digg  Add to Netscape Netscape
Subject Author Date
Mapping class D to Ethernet physical address vicky 06-11-2008
Posted by vicky on June 11, 2008, 4:08 am
If you were  Registered and logged in, you could reply and use other advanced thread options
Hi,

Is the Multicast IP to mac resolution is done at host pc's end
also.
to make a multicast MAC address


For exp
if multicast ip address is


227.2.3.7


then its mac address


01-00-5e-02-03-07


is made at host pc end , as then it send packet by setting this mac
address to the DA field.


Vikrant


Posted by Albert Manfredi on June 11, 2008, 11:07 am

> Is the Multicast IP to mac resolution =A0 is done at host pc's end
> also.
> to make a multicast MAC address
>
> For exp
> if multicast ip address is
>
> 227.2.3.7
>
> then its mac address
>
> 01-00-5e-02-03-07
>
> is made at host pc end , as then it send packet by setting this mac
> address to the DA field.

Yes. And the host joining a multicast does the same thing, setting its
Ethernet interface to receive frames from the MAC address
01-00-5e-02-03-07.

Bert

Posted by vicky on June 11, 2008, 2:24 pm
>
> > Is the Multicast IP to mac resolution =A0 is done at host pc's end
> > also.
> > to make a multicast MAC address
>
> > For exp
> > if multicast ip address is
>
> > 227.2.3.7
>
> > then its mac address
>
> > 01-00-5e-02-03-07
>
> > is made at host pc end , as then it send packet by setting this mac
> > address to the DA field.
>
> Yes. And the host joining a multicast does the same thing, setting its
> Ethernet interface to receive frames from the MAC address
> 01-00-5e-02-03-07.
>
> Bert

----------------------------------------------------------------------------=
--------------

Thanks Mr Bert

Ok , Is the multicating related enteries which made in layer 2 switch
are always be static or it may be aging bit set , or... the behaviour
of enteries for multicast table in layer 2 switch is depand on the
behaviour or say which type of register support by a switch
controller (either it static or dynamic)

please tell me.......

Posted by Albert Manfredi on June 11, 2008, 4:07 pm

> Ok =A0, Is the multicating related enteries which made in layer 2 switch
> are always be static or it may be aging bit set , or... the behaviour
> of enteries for multicast table in layer 2 switch is depand on the
> behaviour =A0or say which type of register support by a switch
> controller (either it static or dynamic)

Are you talking about IGMP snooping here? If yes, the forwarding of
multicasts to a port times out, as stated in RFC 4541, bottom of page
5. It is also dynamic, though, listening for IGMP leave messages.

Have you read through this yet?

http://www.ietf.org/rfc/rfc4541.txt?number=3D4541

Bert

Posted by vicky on June 12, 2008, 12:47 am
>
> > Ok =A0, Is the multicating related enteries which made in layer 2 switch=

> > are always be static or it may be aging bit set , or... the behaviour
> > of enteries for multicast table in layer 2 switch is depand on the
> > behaviour =A0or say which type of register support by a switch
> > controller (either it static or dynamic)
>
> Are you talking about IGMP snooping here? If yes, the forwarding of
> multicasts to a port times out, as stated in RFC 4541, bottom of page
> 5. It is also dynamic, though, listening for IGMP leave messages.
>
> Have you read through this yet?
>
> http://www.ietf.org/rfc/rfc4541.txt?number=3D4541
>
> Bert

------------------------------------

No i m taking about the enteries made in layer 2 switch in its
multicast table is what , either it static or dynamic.

Vikrant

Similar ThreadsPosted
Splitting of physical line possible for 100Mbit/s October 22, 2006, 6:58 pm
Synchronization in carrier class Ethernet March 31, 2006, 5:24 am
byte order of ethernet destination address July 26, 2006, 11:31 pm
MAC address of an IPv6 address April 10, 2007, 4:42 pm
About 10 Gbit/s class February 25, 2008, 12:13 pm
Class of Service (CoS) Question January 29, 2006, 9:38 pm
Valid mac address February 7, 2006, 8:21 pm
Change MAC address June 20, 2007, 7:19 am
MAC destination address July 19, 2007, 12:06 am
Change IP and MAC address December 10, 2007, 4:59 am

other useful resources:
The Federal Communications Commission (FCC)
Telecommunications Industry Association
Electronic and Software Security Products and Services
International Telecommunication Union

Custom CGI Perl and PHP programming by 1-Script.com

Contact Us | Privacy Policy
The site map in XML format XML site map