Re: VTP (V2)

Cisco Doc cd.!
Thanking You

Yours Sincerely

Divin Mathew John
divinjohn_at_gmail.com
divin_at_dide3d.com
http://www.dide3d.com
+91 9945430983
+91 9846697191
+974 5008916
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Sent from Bangalore, KA, India

On Thu, Apr 30, 2009 at 6:23 PM, Ryan West <rwest_at_zyedge.com> wrote:
> Best solution ever:
>
> Solution
>
> Quickly reconfigure all of the VLANs on one of the VTP servers.
>
> -ryan
>
> -----Original Message-----
> From: nobody_at_groupstudy.com [mailto:nobody_at_groupstudy.com] On Behalf Of Divin Mathew John
> Sent: Thursday, April 30, 2009 8:48 AM
> To: ali_akbar99_at_yahoo.com
> Cc: ccielab_at_groupstudy.com
> Subject: Re: VTP (V2)
>
> Ali,
>
> VTP Server and VTP client is just a VTP mode . In the server mode u
> have the capability to create edit and delete Vlans. where as in
> client mode you cant create delete or edi vlans. It tells nothing
> about Server not accepting client's vlan config with a higher revsion
> number.
> This is from the Cisco Doc Cd
> VTP Modes
>
> You can configure a switch to operate in any one of these VTP modes:
>
> *
>
> Server In VTP server mode, you can create, modify, and delete
> VLANs and specify other configuration parameters, such as VTP version
> and VTP pruning, for the entire VTP domain. VTP servers advertise
> their VLAN configuration to other switches in the same VTP domain and
> synchronize their VLAN configuration with other switches based on
> advertisements received over trunk links. VTP server is the default
> mode.
> *
>
> Client VTP clients behave the same way as VTP servers, but you
> cannot create, change, or delete VLANs on a VTP client.
> *
>
> Transparent VTP transparent switches do not participate in VTP.
> A VTP transparent switch does not advertise its VLAN configuration and
> does not synchronize its VLAN configuration based on received
> advertisements, but transparent switches do forward VTP advertisements
> that they receive out their trunk ports in VTP Version 2.
> *
>
> Off (configurable only in CatOS switches) In the three described
> modes, VTP advertisements are received and transmitted as soon as the
> switch enters the management domain state. In the VTP off mode,
> switches behave the same as in VTP transparent mode with the exception
> that VTP advertisements are not forwarded.
>
> http://www.cisco.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080094c52.shtml#vtp_modes.
>
>
>
> The configuration revision number of the switch that you inserted was
> higher than the configuration revision number of the VTP domain.
> Therefore, your recently introduced switch, with almost no configured
> VLANs, erased all VLANs through the VTP domain.
>
> This occurs whether the switch is a VTP client or a VTP server. A VTP
> client can erase VLAN information on a VTP server. You can tell that
> this has occurred when many of the ports in your network go into
> inactive state but continue to be assigned to a nonexistent VLAN.
>
> http://www.dide3d.com/2009/02/how-a-recently-inserted-switch-can-cause-network-problems/
> http://www.cisco.com/en/US/tech/tk389/tk689/technologies_tech_note09186a0080890613.shtml#topic7
>
> Thats how things work in VTPv1 and VTPv2.. Hence there is VTPv3 which
> kinda fixes the higher revision number issue.
> Thanking You
>
> Yours Sincerely
>
> Divin Mathew John
> divinjohn_at_gmail.com
> divin_at_dide3d.com
> http://www.dide3d.com
> +91 9945430983
> +91 9846697191
> +974 5008916
> PGP PUBLIC KEY BLOCK @ http://www.dide3d.com/divin_Public_PGP_key.txt
> Sent from Bangalore, KA, India
>
>
> On Thu, Apr 30, 2009 at 3:06 PM, <ali_akbar99_at_yahoo.com> wrote:
>> Hi All Experts,
>>
>> I have a small question regarding VTP (V2).
>>
>> I am bit confused why VTP client configuration revision number (Higher than the
>> server) effects and change the VLAN configuration of server.
>>
>> As VTP transparent ignore all the update information from server or client than
>> why not Server can ignore the higher configuration revision number if it is
>> receiving from clients within a same domain.
>>
>>
>> Blogs and organic groups at http://www.ccie.net
>>
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>
>
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Received on Thu Apr 30 2009 - 18:41:31 ART