Problem with vtp on catos-switches

Problem with vtp on catos-switches
connected are three switches:
| vtp |
| server |
| cat or ios |
|
|
| vtp | C3750 or C4506
| client |
| ios |
|
|
| vtp | C2948-GE-TX or C2980
| client |
| catos |
1) when the ios-vtp-client restarts after power failure, everything works fine.
2) when the catos-vtp-client restarts after power failure, everything works fine, too.
3) if both (ios-vtp-client and catos-vtp-client) restart after power failure at the same time the catos-vtp-client-switch loses its connection/vlan database.
the reason seems to be that the catos-switch is faster in power up and couldn´t connect the vtp-server after booting.
If you change the vlan-database on the vtp server after both switches are running, the catos-switch learns its vlan database and everything works fine, without change in the vlan database the switch is still out of order.
workaround: configure every catos-switch behind an ios-switch in vtp-server mode
is there another solution for my problem?
thanks and regards
bjoern

not sure of the issue, see if the following link helps :
http://www.cisco.com/en/US/products/hw/switches/ps628/products_configuration_guide_chapter09186a00800d84bf.html

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