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ISL Trunks
Does it forward messages when all switches are in NULL domain? Does it consider a domain match?
—–Original Message—– From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of Mike Harrison Sent: sabado, 31 de maio de 2008 13:24 To: Thor Kopp; Sadiq Yakasai Cc: ccielab@groupstudy.com Subject: Re: ISL Trunks
Thor
I dont think that this is true. V2 doesnt forward VTP when in transparent mode, unless the domain matches. There is some confusion about this in the Doc cd, but configuring this on switches seems to show this to be the case.
Mike
—– Original Message —– From: “Thor Kopp” To: “Sadiq Yakasai” Cc: “David Lonnie” ; “John” ; “Z Linux” ; Sent: Saturday, May 31, 2008 4:00 PM Subject: Re: ISL Trunks
> With VTP V1 (the default) a switch in transparent mode will only > forward vtp advertisments if the domain & version number match so if > you use a random VTP domain for example you won’t forward VTP messages > learnt on trunk ports (because it’s unlikely that the VTP domain will > match). > > VTP V2 will forward VTP messages regardless of the VTP domain that is > in the VTP message that it receives. > > - Thor > On Sat, May 31, 2008 at 9:33 AM, Sadiq Yakasai > wrote: > >> Hmmm, >> >> I dont think setting the VTP mode to transparent will make the switch >> block all VTP advertisements. The switches will only not originate >> VTP but will still relay them from other switches. >> >> I agree with Paul, setting the switchport modes to access will do the >> trick, but not including the trunks that you have already set anyway, >> as doing so will revert them back to access switchports and not >> satisfy the previous ISL encap requirement. >> >> HTH >> Sadiq >> >> >> _______________________________________________________________________ >> Subscription information may be found at: >> http://www.groupstudy.com/list/CCIELab.html > > > _______________________________________________________________________ > Subscription information may be found at: > http://www.groupstudy.com/list/CCIELab.html
