I have 3750 series switches whic h modify the voip cos to cos 5, these act like a layer 2 devices. The switches are connected to ASA 5500 firewall and firewalls to WAN, How can i implement the layer 3 dscp marking on switches or firewalls? if i apply on the switches, will the firewall trust the marking or forward these with out it. Do the firewalls ASA 5510 supports the dscp marking of packets?
Your help will be higly appriciated on this matter.
Do you have Cisco IP phones connected to these 3750 switches? If so the Cisco IP phones by default will mark all Voice payload traffic as DSCP EF. Unless configured the firewalls shouldn't modify any of the DSCP fields.
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The short answer is that you don't.... That isn't entirely true while at
the same time it kind of is, but for the most part you don't configure
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Topology: IP Phone > Switches > Microsoft NPS setup to forward 802.1x
proxy to > ISE 2.1 patch 3 Authentication: EAP-TLS using Cisco MIC SANs
Phone Models 802.1X support? 802.1x flavor Addtl Comment EAP-MD5 EAP-TLS
Cisco 3905 Y Y N Cisco 6911 Y Y N Cisco ...