route field

>
> Tunneling is *not* routing. The point made above is that an Ethernet
> bridge can be used to tunnel source-route information (including CFI
> information) between two source-route-capable LANs (e.g., Token Ring or
> FDDI) across a non-source-route-capable Ethernet backbone. The Ethernet
> bridge is not performing any source-route function, only passing along
> the information.
>

> > One more thing is about that type of tunneling is it done
> > automatically or a programmer has also play a role for this , and if a
> > programmer has a role than also tell me some about of this role.

>
> The tunneling function must be designed into the bridge. It can be
> performed either in hardware or software.
>
> --
> Rich Seifert =A0 =A0 =A0 =A0 =A0 =A0 =A0Networks and Communications Consu=

lting

> =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 21885 Bear Creek Way
> (408) 395-5700 =A0 =A0 =A0 =A0 =A0 =A0Los Gatos, CA 95033
> (408) 228-0803 FAX
>
> Send replies to: usenet at richseifert dot com- Hide quoted text -
>
> - Show quoted text -

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

can u please highligted the following with detail....................

The tunneling function must be designed into the
bridge. It can be
performed either in hardware or software.

Thanks

regards

Vikrant Pandey

Posted by Rich Seifert on July 4, 2008, 11:22 am

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In article

> can u please highligted the following with detail....................
>
> The tunneling function must be designed into the
> bridge. It can be
> performed either in hardware or software.
>

The statement means exactly what it says. A device cannot tunnel unless
it is designed to do so. The tunneling function can be implemented
either in hardware (e.g., in a finite-state machine), or in software
(e.g., as code executed by a microprocessor). The choice is a matter of
implementation preference, performance, and cost.

--
Rich Seifert Networks and Communications Consulting
21885 Bear Creek Way
(408) 395-5700 Los Gatos, CA 95033
(408) 228-0803 FAX

Send replies to: usenet at richseifert dot com

Posted by vicky on July 14, 2008, 1:47 am

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Hello

Please access my share web file link ---

http://vikrantpandey.diinoweb.com/files/

and please see my query which is in the vlan case1.jpg file.

Thanks in advance

Vikrant

Posted by vicky on July 5, 2008, 9:24 am

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Hello Sir

What u say about inter-port based-vlan communication is it
possible ..... if
yes plz tell how ????
please.........

Thanks

Vikrant

Posted by Walter Roberson on July 5, 2008, 11:02 am

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>What u say about inter-port based-vlan communication is it
>possible ..... if
>yes plz tell how ????
>please.........

It is *not* possible on any Layer 2 switch unless that switch has bugs
in its hardware or software.

(Some Layer 2 switches allow you to deliberately configure intra-vlan
communications, but I count that as a bug.)

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