learn Vlans from the core!

Answered Question

Hi Experts!

I will deploy a distribution switch(4507R).what is the Preferred way to let this switch learn about the vlans already created on the CORE,IS it Via put this switch as a vtp client to learn the vlans from the core than change its mode to vtp server

10xs



Correct Answer by Edison Ortiz about 10 years 1 month ago

No debate on that subject from me Sundar :)


I actually integrate switches in transparent mode and then change it to server once I see everything is stable.


Correct Answer by sundar.palaniappan about 10 years 1 month ago

True, oversight on my part. Thanks for pointing it out Edison:)


But, changing the VTP to a different bogus domain and restoring it should reset the revision #.


Regards,

Sundar


Correct Answer by Edison Ortiz about 10 years 1 month ago

In addition to Sundar's suggestion, make sure you have the ports as trunks in order for the VTP updates to pass thru.


Correct Answer by Edison Ortiz about 10 years 1 month ago

Sundar,


write erase won't affect VTP, you need to delete flash:vlan.dat

Correct Answer by sundar.palaniappan about 10 years 1 month ago

Ali,


Yes, configure the switch to be a VTP client in the same domain as the core switch. If there is a VTP password configured on the core then make sure the same password is configured on this switch.


Another thing to watch out for is the config revision #. If you don't want this switch to become the VTP server ever then ensure the config revision of this switch is lower than that of the core switch. If the revision # is higher than that of the core switch this switch would become a VTP server and can overwrite the vlan database on the care and this can result in serious problems. If the revision # is high on this switch set the switch to be part of a different non-existent VTP domain name and change it to your current VTP domain name and the config revision should reset to 0 (or) if needed, perform a write erase and put the config in completely.


HTH


Sundar

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Correct Answer
sundar.palaniappan Wed, 03/28/2007 - 12:30
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Ali,


Yes, configure the switch to be a VTP client in the same domain as the core switch. If there is a VTP password configured on the core then make sure the same password is configured on this switch.


Another thing to watch out for is the config revision #. If you don't want this switch to become the VTP server ever then ensure the config revision of this switch is lower than that of the core switch. If the revision # is higher than that of the core switch this switch would become a VTP server and can overwrite the vlan database on the care and this can result in serious problems. If the revision # is high on this switch set the switch to be part of a different non-existent VTP domain name and change it to your current VTP domain name and the config revision should reset to 0 (or) if needed, perform a write erase and put the config in completely.


HTH


Sundar

Correct Answer
Edison Ortiz Wed, 03/28/2007 - 12:34
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Sundar,


write erase won't affect VTP, you need to delete flash:vlan.dat

Correct Answer
sundar.palaniappan Wed, 03/28/2007 - 12:47
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True, oversight on my part. Thanks for pointing it out Edison:)


But, changing the VTP to a different bogus domain and restoring it should reset the revision #.


Regards,

Sundar


Correct Answer
Edison Ortiz Wed, 03/28/2007 - 12:50
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No debate on that subject from me Sundar :)


I actually integrate switches in transparent mode and then change it to server once I see everything is stable.


Correct Answer
Edison Ortiz Wed, 03/28/2007 - 12:43
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In addition to Sundar's suggestion, make sure you have the ports as trunks in order for the VTP updates to pass thru.


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