![]() So here goes - t he example below gives priority to DSCP values 46 (ef), 40 (cs5) and 48 (cs6). However - please check your phone vendor's config - SIP setup may use other DSCP values (34, 40) that you'll want to add to the config below.įour - unlike a router where you can have multiple policies - the ASA supports priority for one policy only - all other traffic will be best effort. Three - your phones or other networking equipment (switch or router) will have to mark your voice traffic with proper DSCP values. The below config works for me on 9.1.5 and earlier. However - that may have changed with the release of the 9.2.x software code (I can't confirm). The ASA 5505 is not yet EOL - so should keep the shaping with QoS capabilities. Two - the ASA 5505 and older 5500's supports traffic shaping with QoS whereas the newer ASA 5500-X platform does not. However - your ASA will work to put the priority traffic (voice) on the wire before all other traffic (this will help ensure voice quality as best as possible). One - once your traffic hits the internet - there is no QoS. Here's a description from Cisco comparing the two:įour caveats for using Traffic Shaping with QoS on the ASA (I'm sure there are more): I prefer the latter and have had great success using it. ![]() You can use the priority queue with traffic policing or you can use traffic shaping.
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