PVST from trunk to accessport

We are migrating to a new networksetup. If i enable port 41 (port from Arista to Dell switch) on the Arista switch we get the following errors @ the Cisco switch:

*Dec 11 13:26:58.742: %SPANTREE-2-UNBLOCK_CONSIST_PORT: Unblocking GigabitEthernet1/0/1 on VLAN0001. Port consistency restored.

*Dec 11 13:34:53.722: %SPANTREE-7-RECV_1Q_NON_TRUNK: Received 802.1Q BPDU on non trunk GigabitEthernet1/0/1 VLAN1.

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Is it not possible to trunk with PVST over the network and convert the trunk to a vlan access port?

Or is the reason that we use RSTP on the Dell switch and the Dell switch don't sees the PVST-packets and forward it dumb to the access port?

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Setup:

Arista switch <----> Dell switch <----> Cisco switch

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Configs:

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Arista switch:

spanning-tree mode rapid-pvst

spanning-tree mst 0 priority 8192

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vlan 134

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interface Ethernet41

description linktoDellSwitch

switchport mode trunk

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Dell Switch:

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vlan 134

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(RSTP configured, IEEE 802.1w)

spanning-tree priority 4096

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interface Te1/0/2

description "linktoArista"

switchport mode general

switchport general allowed vlan add 134 tagged

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interface Te1/0/21

description "linktoCisco"

switchport access vlan 134

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Cisco switch:

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spanning-tree mode pvst

spanning-tree extend system-id

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interface GigabitEthernet1/0/1

description linktoDell

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* Default VLAN1 configurerd all ports.