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VTP

sumit2012
sumit2012 asked
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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. However, in VTP Version 2, transparent switches do forward VTP advertisements that they receive from other switches through their trunk interfaces. You can create, modify, and delete VLAN’s on a switch in VTP transparent mode
 
Interestingly, and I shall test it shortly, on some study material I reviewed a while back one of the instructors stated that VTP Version 1 did actually pass on the advertisement if the switch was in Transparent mode.
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Steve JenningsSr Manager Cloud Networking Ops
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Commented:
What is the question?

By the way, VTP wouldnt be very effective if transparent switches blocked VTP advertisements.

Steve

Author

Commented:
So basically what should we used VTP Transparent version 1 or version 2 and then why ?

Commented:
VTP V2 has support for Token Ring VLANs. If you don't have Token ring then use V1.

VTP mode transparent switches will pass VTP advertisements. I know Cisco switches do, but only if configured for the same VTP domain.

Author

Commented:
I have always heared the name of Token Ring. What exactly it is how should i make sure that if i can use the VTP Transparent V2 or not.

As you said above VTP mode transparent switches will pass VTP advertisements. If configured the same VTP domain. That means i need not to configure the Vlan manually if i am using the VTP V1 if configured with the same VTP domain.

Commented:
A search on Cisco's web site for "understanding vtp version 2" gives several references and explains the differences between version 1 and version 2.
http://www.cisco.com/en/US/docs/switches/lan/catalyst4500/12.2/25ewa/configuration/guide/vtp.html#wp1020429

You shouldn't have any issues with VTP through transparent switches in either version - just note that version 1 device will only pass advertisements if they are the same VTP domain and version as itself.

Author

Commented:
Please correct if i am wrong.

1) only in VTP version 2 cisco device will pass the VTP advertisements. That the Vlan information and we need not to manually configure the vlans manually on each switch the condition is that VTP domain name should be the same. While in VTP version 1 it not possible at all.

Please let me know in yes or no. Not sure if i am correct.

Commented:
No.
A VTP version 1 device *will* pass VTP advertisements as long as they contain the same VTP domain name and VTP version number as the device.

Author

Commented:
So the only difference is VTP v2 supports token ring while VTP v1 not.
Commented:
"So the only difference is VTP v2 supports token ring while VTP v1 not." - Yes

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