"Al lists" <[EMAIL PROTECTED]> writes: > Theoretically, setting TOS value ( these days called DSCP) wont change > anything in switch behavior, unless you are using Layer 3 switches. > What makes a difference in a switch is COS bits, and i'm not sure how > asterisk sets that.
Sadly Asterisk still calls DSCP TOS, so I stuck with Asterisk nomenclature. Modern switches can translate DSCP into COS (lossily) and many do so automatically. With most switches, sending DSCP set to EF will give the traffic priority. Signalling (SIP) is usually set to class AF21; Cisco recommends that CS3 is used instead. Either should work fine with the default setup on many LAN switches. > I guess to be safe, you would need to create 2 VLANS and in the switch > define on VLAN as a high priority VLAN. That certainly works too. It's just a pain if you use the built-in switches available in most phones. You need to manually tell them to use a different VLAN, or use Cisco-switches with CDP. Most phone manufacturers don't support LLDP for voice VLAN discovery yet. /Benny _______________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users