Re: VTP Server and Transparent

Good Afternoon Don,

Thanks for the clarification.
I would use the command spanning-tree root primary command on the
switch(A), or setting the priority option to 1.

spanning-tree vlan (Vlans Here) root primary

or by setting the priority value to lower than what is on the other switches.

spanning-tree vlan (Vlans Here) priority 1, assuming the other
switches are using the default of 32768, but do a show spanning-tree
summary to verify.

sh spanning-tree root to verify configuration.

http://www.cisco.com/en/US/tech/tk389/tk621/technologies_configuration_example09186a008009467c.shtml

Hope that helps, and again has to be clear for all of us!!!

Unfortunately, I am using GNS3, and cannot test your scenerio.

Regards,
John

On 6/24/12, Don Rajaratne <don.rajaratne_at_gmail.com> wrote:
> Hi Guys,
>
> I really value all your comments and thoughts on this. Thank you.
>
> @Jhon - Its not a complicated scenario. Just say three switches (A,B,C) are
> interconnected with each other using trunk ports (Mesh), which switch A is
> the master and B&C are configured for clients.And master is configured for
> vlan 2,5,13,45,67. Spanning-tree mode rapid-pvst.
>
> If I want switch A to be the root for all the vlans (This may includes
> future adding vlans as well) what would be the best way to configure?
> 1-4094 or 1-1005?
>
> Hope its clear for you now.
>
> Cheers.
>
> Don.
>
> On Sun, Jun 24, 2012 at 10:04 PM, marc abel <marcabel_at_gmail.com> wrote:
>
>> I guess we will have to disagree or wait for Don speak back up.
>>
>> If you understand spanning-tree in the context of the CCIE lab you know
>> that only switches(bridges) participate in STP. So in this case "server"
>> doesn't refer to some external box, but instead refers to the fact that
>> the
>> switch is the VTP server.
>>
>> Am I making an assumption? Probably, but I it is an educated assumption
>> based on.
>>
>> A. Understanding the protocols he is asking about and how they interact.
>> B. Following this list for the last 4 years and seeing similar questions
>> asked repeatedly.
>>
>>
>>
>> On Sun, Jun 24, 2012 at 12:44 PM, john matijevic
>> <john.matijevic_at_gmail.com
>> > wrote:
>>
>>> Good Afternoon Marc,
>>>
>>> Here is his original post:
>>>
>>>
>>> "
>>> Hi Guys,
>>>
>>> May be this is a silly one .. :)
>>>
>>> Its like this... Its a vtp server and client scenario. If the question
>>> says
>>> the server has to be primary root for all the vlan what is the range I
>>> have
>>> to choose? Is it 1-4094? or 1-1005?
>>>
>>> I know only transparent mode supports up to 4094 and server mode only up
>>> to
>>> 1005. But, I have seen some workbooks have selected 1-4094 even though
>>> its
>>> on server mode.Any harm by doing this??
>>>
>>> Thank you all..
>>>
>>> Don
>>>
>>> "
>>>
>>>
>>> Its like this... Its a vtp server and client scenario. If the question
>>> says
>>> the server has to be primary root for all the vlan what is the range I
>>> have
>>> to choose? Is it 1-4094? or 1-1005?
>>>
>>>
>>> He is asking about a particular question, this question could be
>>> related to another question, we can't assume that it doesn't.
>>>
>>>
>>> Here is your assumption:
>>> The question tells him to make a switch (lets call it SW1) root for
>>> all vlans. This is it, the one single sole requirement. Now this is
>>> it, a pretty straight forward standard spanning tree question. Could
>>> be MST, PVST, etc make no difference(lets assume pvst).
>>>
>>> This is incorrect his question is this:
>>> the server has to be primary root for all the vlan what is the range I
>>> have
>>> to choose? Is it 1-4094? or 1-1005?
>>>
>>> again is this a server with a switch inside, what is the scenerio.
>>>
>>> Lets let Don Reply instead of making assumptions of what he did or did
>>> not assume.
>>> Again big mistake to assume.
>>>
>>> Regards,
>>> John
>>>
>>>
>>> On 6/24/12, marc abel <marcabel_at_gmail.com> wrote:
>>> > John, I'm not sure what is so vague about his question and the
>>> > topology
>>> > isn't really relevant. You could have 2 switches in your spanning-tree
>>> > topology or 1000 it makes no difference.
>>> >
>>> > The question tells him to make a switch (lets call it SW1) root for
>>> > all
>>> > vlans. This is it, the one single sole requirement. Now this is it, a
>>> > pretty straight forward standard spanning tree question. Could be MST,
>>> > PVST, etc make no difference(lets assume pvst).
>>> >
>>> > Config SW1:
>>> >
>>> > spanning-tree mode pvst
>>> > spanning-tree vlan ?
>>> >
>>> > Now the "?" is what his question revolves around. Which vlans should
>>> > he
>>> > include do you think? Remember the question states ALL vlans.
>>> >
>>> > Now the wrinkle to his question comes in because of VTP. Because his
>>> switch
>>> > is a VTP server it only supports standard vlans 1-1005. So he has two
>>> > options
>>> >
>>> > Option 1 - make his switch the root for only the vlans his switch
>>> supports
>>> >
>>> > spanning-tree vlan 1 - 1005 root primary
>>> >
>>> > Option 2 - make his switch the root for ALL vlans
>>> >
>>> > spanning-tree vlan 1 - 4094 root primary
>>> >
>>> > Which option would Choose? This is the root of his question.
>>> >
>>> > I would choose the second option, because the initial requirement did
>>> not
>>> > ask us to make the distinction as to only the vlans the switch
>>> > currently
>>> > supports. The initial question simply asked us to make it root for ALL
>>> > vlans, which the second one clearly does.
>>> >
>>> > On Sun, Jun 24, 2012 at 12:15 PM, john matijevic
>>> > <john.matijevic_at_gmail.com>wrote:
>>> >
>>> >> Good afternoon Jay,
>>> >>
>>> >> I wouldnt take anything for ganted and assume nothing.
>>> >>
>>> >> What Don is asking is important for eveyone on this list, so that we
>>> >> can all try and learn and pass the exam. It's important to understand
>>> >> what is it that Don is lacking that asks him to post a question here
>>> >> on the forum. If the question is ambiguous, or if Don knows more
>>> >> about
>>> >> the scenerio due to diagrams and configurations, he may just have a
>>> >> specific piece that he is uncertain of, but has not given us all the
>>> >> full details of the scenerio he is working with.
>>> >>
>>> >> Weather its a spanning-tree or VTP task who knows? Without more
>>> >> detail
>>> >> information it be a mistake to assume anything.
>>> >>
>>> >> This is a dangerous mindset to have is to assume especially when it
>>> >> comes to not only the CCIE lab exam but real world networking, and
>>> >> working with customers/clients.
>>> >>
>>> >> Regards,
>>> >> John
>>> >>
>>> >>
>>> >>
>>> >>
>>> >>
>>> >> On 6/24/12, Jay McMickle <jay.mcmickle_at_yahoo.com> wrote:
>>> >> > This just covers you, no matter what the situation. All VLAN's
>>> >> > means
>>> >> > all
>>> >> > VLAN's, in any situation.
>>> >> >
>>> >> > Regards,
>>> >> > Jay McMickle- CCIE #35355 (R&S)
>>> >> > Sent from iJay
>>> >> >
>>> >> > On Jun 24, 2012, at 12:02 PM, john matijevic <
>>> john.matijevic_at_gmail.com>
>>> >> > wrote:
>>> >> >
>>> >> >> Good Morning Jay,
>>> >> >>
>>> >> >> Please post on how you agree, also post where you got this
>>> >> >> question
>>> >> from?
>>> >> >> Also please be more specific on covers you if it moves to
>>> transparent.
>>> >> >>
>>> >> >> again vague, also please post diagram and configs.
>>> >> >>
>>> >> >> This is a vague question by Don, I apologize to Marc, the question
>>> is
>>> >> >> directed towards Don.
>>> >> >>
>>> >> >> Regards,
>>> >> >> John
>>> >> >>
>>> >> >> On 6/24/12, Jay McMickle <jay.mcmickle_at_yahoo.com> wrote:
>>> >> >>> I agree: 1-4094. This always covers you if it moves to
>>> >> >>> transparent.
>>> >> >>>
>>> >> >>> Regards,
>>> >> >>> Jay McMickle- CCIE #35355 (R&S)
>>> >> >>> Sent from iJay
>>> >> >>>
>>> >> >>> On Jun 24, 2012, at 9:36 AM, marc abel <marcabel_at_gmail.com>
>>> >> >>> wrote:
>>> >> >>>
>>> >> >>>> I would choose 1-4094.
>>> >> >>>>
>>> >> >>>> On Sun, Jun 24, 2012 at 9:11 AM, Don Rajaratne
>>> >> >>>> <don.rajaratne_at_gmail.com>wrote:
>>> >> >>>>
>>> >> >>>>> Hi Guys,
>>> >> >>>>>
>>> >> >>>>> May be this is a silly one .. :)
>>> >> >>>>>
>>> >> >>>>> Its like this... Its a vtp server and client scenario. If the
>>> >> question
>>> >> >>>>> says
>>> >> >>>>> the server has to be primary root for all the vlan what is the
>>> >> >>>>> range
>>> >> I
>>> >> >>>>> have
>>> >> >>>>> to choose? Is it 1-4094? or 1-1005?
>>> >> >>>>>
>>> >> >>>>> I know only transparent mode supports up to 4094 and server
>>> >> >>>>> mode
>>> >> >>>>> only
>>> >> >>>>> up
>>> >> >>>>> to
>>> >> >>>>> 1005. But, I have seen some workbooks have selected 1-4094 even
>>> >> though
>>> >> >>>>> its
>>> >> >>>>> on server mode.Any harm by doing this??
>>> >> >>>>>
>>> >> >>>>> Thank you all..
>>> >> >>>>>
>>> >> >>>>> Don
>>> >> >>>>>
>>> >> >>>>>
>>> >> >>>>> Blogs and organic groups at http://www.ccie.net
>>> >> >>>>>
>>> >> >>>>>
>>> >> _______________________________________________________________________
>>> >> >>>>> Subscription information may be found at:
>>> >> >>>>> http://www.groupstudy.com/list/CCIELab.html
>>> >> >>>>>
>>> >> >>>>>
>>> >> >>>>>
>>> >> >>>>>
>>> >> >>>>>
>>> >> >>>>>
>>> >> >>>>>
>>> >> >>>>>
>>> >> >>>>
>>> >> >>>>
>>> >> >>>> --
>>> >> >>>> Marc Abel
>>> >> >>>> CCIE #35470
>>> >> >>>> (Routing and Switching)
>>> >> >>>>
>>> >> >>>>
>>> >> >>>> Blogs and organic groups at http://www.ccie.net
>>> >> >>>>
>>> >> >>>>
>>> >> _______________________________________________________________________
>>> >> >>>> Subscription information may be found at:
>>> >> >>>> http://www.groupstudy.com/list/CCIELab.html
>>> >> >>>
>>> >> >>>
>>> >> >>> Blogs and organic groups at http://www.ccie.net
>>> >> >>>
>>> >> >>>
>>> _______________________________________________________________________
>>> >> >>> Subscription information may be found at:
>>> >> >>> http://www.groupstudy.com/list/CCIELab.html
>>> >> >>>
>>> >> >>>
>>> >> >>>
>>> >> >>>
>>> >> >>>
>>> >> >>>
>>> >> >>>
>>> >> >>>
>>> >> >
>>> >>
>>> >
>>> >
>>> >
>>> > --
>>> > Marc Abel
>>> > CCIE #35470
>>> > (Routing and Switching)
>>> >
>>>
>>
>>
>>
>> --
>> Marc Abel
>> CCIE #35470
>> (Routing and Switching)

Blogs and organic groups at http://www.ccie.net
Received on Sun Jun 24 2012 - 14:56:12 ART