Adam, Not exactly... The CE is not using any labels... The remote PE should signal an explicit NULL label to the penultimate P router, so that the SP EXP marking would be sent using this label from the P to the egress PE. The egress PE then can use the incoming EXP marking to set the egress IP QOS policy (on cisco platforms done by matching the EXP on ingress and setting qos-group, which is then used as the match criteria on the egress IP QOS policy).
On ingress this is just regular operation (like in all modes) - use the incoming packet (or configure local policy) to mark the imposed EXP value. Maybe this document would help: http://www.cisco.com/en/US/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRN D/VPNQoS.html Arie -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Vitkovsky, Adam Sent: Thursday, August 25, 2011 15:13 To: [email protected] Subject: [c-nsp] MPLS DiffServ Tunneling Modes -Pipe mode I was just checking the Cisco IOS Multiprotocol Label Switching Configuration Guide, Release 15.0M.pdf For the IETF standards based DS-TE -and kept reading further about the Tunneling modes and that's where it got interesting They are referring to Pipe mode as QOS Tunnel that goes form CE to CE And indeed by that they mean that at ingress the managed CE should impose an explicit null-label with the EXP set accordingly on packets sent to PE Than PE should refer to that EXP marking from CE to set the EXP marking towards the P-core -just would like to ask the community whether this is now understood as the part of the pipe-mode setup -cause I've always understood the pipe mode as PE-to-CE egress scheduling based on the mpls-exp values stored in the qos-group rather than the accrual ip dscp values adam _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
