https://community.extremenetworks.com/t5/extremeswitching-eos/xsr18xx-xsr3250-ssa-n1-2g4082-25-and-dscp46-without-policy/m-p/15031#M32 Hi all,<BR /> <BR /> I need some clarity on how the XSR and A/B/C-series switches handles packets marked with DCSP 46 (Expedited Forwarding).<BR /> <BR /> The Scenario:<BR /> We have various makes of VoIP phones which are configured with vlan tagging with DSCP 46 enabled on them.<BR /> We do not use Policy on any equipment. <BR /> We mostly use XSR series routers via various communicatons mediums (T1/E1, Radio, Metro Ethernet).<BR /> <BR /> With WireShark we can see that the DSCP46 is maintained all the way, so it is not stripped from the packet header.<BR /> <BR /> So my question is how does the equipment (including the XSR routers handle packets marked with DSCP 46? Even if we don't have Policy configured on anything.<BR /> Do they still expedite the forwarding of those packets, or are they processed in sequence along with other packets entering the router?<BR /> <BR /> We have been operating on the assumption that the EF tag will provide transmit priority for these packets before other (non-VoIP) traffic.<BR /> I just need confirmation (or refutation) that this is indeed the case.<BR /> <BR /> Wed, 13 Jan 2016 15:21:00 GMT Eugene_van_Heer 2016-01-13T15:21:00Z https://community.extremenetworks.com/t5/extremeswitching-eos/xsr18xx-xsr3250-ssa-n1-2g4082-25-and-dscp46-without-policy/m-p/15031#M32 Hi all,<BR /> <BR /> I need some clarity on how the XSR and A/B/C-series switches handles packets marked with DCSP 46 (Expedited Forwarding).<BR /> <BR /> The Scenario:<BR /> We have various makes of VoIP phones which are configured with vlan tagging with DSCP 46 enabled on them.<BR /> We do not use Policy on any equipment. <BR /> We mostly use XSR series routers via various communicatons mediums (T1/E1, Radio, Metro Ethernet).<BR /> <BR /> With WireShark we can see that the DSCP46 is maintained all the way, so it is not stripped from the packet header.<BR /> <BR /> So my question is how does the equipment (including the XSR routers handle packets marked with DSCP 46? Even if we don't have Policy configured on anything.<BR /> Do they still expedite the forwarding of those packets, or are they processed in sequence along with other packets entering the router?<BR /> <BR /> We have been operating on the assumption that the EF tag will provide transmit priority for these packets before other (non-VoIP) traffic.<BR /> I just need confirmation (or refutation) that this is indeed the case.<BR /> <BR /> Wed, 13 Jan 2016 15:21:00 GMT https://community.extremenetworks.com/t5/extremeswitching-eos/xsr18xx-xsr3250-ssa-n1-2g4082-25-and-dscp46-without-policy/m-p/15031#M32 Eugene_van_Heer 2016-01-13T15:21:00Z https://community.extremenetworks.com/t5/extremeswitching-eos/xsr18xx-xsr3250-ssa-n1-2g4082-25-and-dscp46-without-policy/m-p/15032#M33 All of the equipment cited here - A/B/C/N/S/XSR - behaves the same way under these conditions. In the absence of special configuration, they will pass along existing TOS/DSCP values but will not react to them. The assumption is thereby refuted. Thu, 14 Jan 2016 04:00:00 GMT https://community.extremenetworks.com/t5/extremeswitching-eos/xsr18xx-xsr3250-ssa-n1-2g4082-25-and-dscp46-without-policy/m-p/15032#M33 Paul_Poyant 2016-01-14T04:00:00Z