- A virtual community of network engineers
 Home  BookStore  StudyNotes  Links  Archives  StudyRooms  HelpWanted  Discounts  Login
Re: VTP and ISL and 802.1q trunks posted 09/12/2003
[Chronological Index] [Thread Index] [Top] [Date Prev][Date Next] [Thread Prev][Thread Next]

no though I tend to use 802.1q, try to keep configs consistant.


ccie2be wrote:


Are there any problems or issues when both ISL and 802.1q trunks are used in
the same VTP domain?

For example, suppose the following:

        ----ISL trunk --------
Sw1                                Sw2
        ----802.1q trunk----

Is the above a valid configuration?  If so, do any special precautions need to
be taken related to STP or VTP because one trunk is ISL but the other one is

Example 2: Assume Sw1 is VTP server and sw2 and sw3 are VTP clients all in the same VTP domain.

Sw1----ISL trunk--------Sw2-------802.1q trunk--------Sw3

Is this a valid configuration? Any gotcha's I need to be aware of?

I know that these aren't preferred configs but the Cisco lab is reputed to
test valid config's even if they're not good config's.

Thanks, dt

_______________________________________________________________________ You are subscribed to the CCIE R&S Discussion Group.

Subscription information may be found at:

-- David Madland CCIE# 2016 Sr. Network Engineer Qwest Communications 612-664-3367

"Emotion should reflect reason not guide it"