the frame will not be fragmented and the switch will process the frame.. it will
be classed as a giant.. and from cisco literature the frame 'may' record it as
an error (as shown in counters).
isl encapsulated frames of course, can only be interperated with isl capable
switches.
hth,
mark.
"Dove" <[EMAIL PROTECTED]> on 27/09/2000 15:28:21
Please respond to "Dove" <[EMAIL PROTECTED]>
To: [EMAIL PROTECTED]
cc: (bcc: Mark Vicuna/Sydney/CDM)
Subject: Question about ISL and 802.1Q encapsulation
Hi,
I have a question about ISL and 802.1Q encapsulation/tagging. As I know, ISL
will encapsulate a frame with adding 26 bytes to header and 4 bytes to
trailer; and 802.1Q will modify the existing header and add 4 bytes to it.
My question is: if the frame is already in its maximum size (i.e. 1,518
byte), after ISL or 802.1Q encapsulation/tagging, the frame size will be
greater than the ethernet maximum size. Will it cut the frame into 2 parts
or ignore the frame size checking?
Regards.
dovelet
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