Spanning Tree through a Transparent PIX

Answered Question

Does a PIX in transparent mode break Spanning Tree communication between two switches ?

Is there an option to allow the layer two STP frames through a transparent PIX ?

Correct Answer by Jon Marshall about 10 years 2 weeks ago

Hi Andrew


It will not let BPDU's through by default but you can allow them through with an ethertype access-list.


Attached is a link to v7.0 config for pix covering ethertype access-lists.


http://www.cisco.com/en/US/docs/security/asa/asa70/configuration/guide/traffic.html#wp1042206


HTH


Jon


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Correct Answer
Jon Marshall Wed, 07/04/2007 - 04:16
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Hi Andrew


It will not let BPDU's through by default but you can allow them through with an ethertype access-list.


Attached is a link to v7.0 config for pix covering ethertype access-lists.


http://www.cisco.com/en/US/docs/security/asa/asa70/configuration/guide/traffic.html#wp1042206


HTH


Jon


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