Re: Ether Type and Protocol Type

The value of TPID for Q in Q depends on the stack implementation from
different vendors
For Eg: Alcatel and Juniper uses 0x9100 and Cisco uses 0x8100

In the case of IP in IP the Protocol number would be 4, which denotes IPv4

http://www.iana.org/assignments/protocol-numbers/protocol-numbers.xml

You may have to g00gle for more details and for other specific info.

Best Regards,
Tharak Abraham Luke

On Wed, Dec 28, 2011 at 10:25 PM, Routing Freak <routingfreak_at_gmail.com>wrote:

> Hi all
>
> When will u find the ether type as Dot 1Q (0x8100) and Q in Q (0x9100)
>
> Wat s the protocol field in IP header when the payload it carries is also
> another IP header ( in case of IP in IP tunnel).
>
> Can anyone send me a link for different values of protocol types ?
>
>
>
>
> On Tue, Dec 27, 2011 at 3:16 AM, Jochen Bartl <jochen.bartl_at_gmail.com
> >wrote:
>
> > Hi,
> >
> > my preferred way for getting answers to those questions is watching
> > frames/packets in Wireshark. If the Wireshark code of a particular
> > protocol is not broken, it is a very convenient way to find out about
> > the truth ;-)
> > Sample capture files for the protocols you have mentioned are
> > available on the following sites:
> >
> > http://packetlife.net/captures/ (Direct links to CloudShark)
> > - Example:
> >
> http://www.cloudshark.org/view?url=http://packetlife.net/captures/802.1Q_tunneling.cap
> > * Ethernet(eth-type 0x8100)/802.1q (TPID 0x8100)/802.1q (TPID
> > 0x8000)/IPv4 (proto 1)/ICMP
> > http://wiki.wireshark.org/SampleCaptureshttp://pcapr.net/
> >
> > Best regards,
> >
> > Jochen
>
>
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Received on Thu Dec 29 2011 - 12:08:11 ART