Does Cisco ASA 5520 support spanning tree

I see that the Cisco ASA 5505 does not support spanning tree.

I plan to configure a Cisco ASA 5520 in transparent mode. Does this device support spanning tree? If so, does the device support rapid spanning tree? Please provide documentation if possible.
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Jimmy Larsson, CISSP, CEHNetwork and Security consultantCommented:

The ASA in transparent mode does not participate in spanning tree. However it is transparent to STP and will forward BPDU:s which means that your current STP-topology will be totally unaware of the ASA.


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Ken BooneNetwork ConsultantCommented:
Here is a link that states this:

STP and Transparent Mode

Spanning tree protocol (STP) is passed through the firewall by default in transparent mode. This default operation of the product can be mitigated by creating an access list to block the traffic.

hostname(config)# access-list layer2 ethertype deny bpdu

It does not participate in stp but simply passes through.
Jimmy Larsson, CISSP, CEHNetwork and Security consultantCommented: I said.

c-h-r-i-s-t-o-p-hAuthor Commented:
To confirm that I understand correctly.

If I plug two devices that participate in spanningtree into the transparent asa and produce a loop, then the spanning tree devices will treat the transparent asa as part of the physical link and handle stp blocking on their end?
Ken BooneNetwork ConsultantCommented:
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