Ethereal-users: [Ethereal-users] Tethereal Cisco port identifier - how do get the decimal number

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From: Stef <stefmit@xxxxxxxxx>
Date: Sun, 7 Nov 2004 09:57:03 -0600
I have a question regarding what tethereal calls "port identifer" -
how can I convert that into a "real" port number? Here is what I am
talking about:

# tethereal -V -i eth2 |grep 'Port identifier'  --> gets me:

Port identifier: 0x20cd

Now - if I were to take the above "ad-literam", then 0x = HEX ==> port
= (20CD) decimal = 8397, which is definitely wrong! ... thus my
question ...

TIA,
Stef

P.S. [OT] While capturing traffic  as above, I stumbled across some
other thing:

# tethereal -Nm -i eth2 |grep 'Cisco' 

Cisco_17:04:ce -> Cisco_17:04:ce LOOP Reply

looking further into it , I found that the above is tethereal
interpretation of a the 0x9000 protocol (loopback), but I couldn't
find anything telling me what is causing it to run on a switch - any
ideas?