We have an Cisco ASR 1004 router. there is a traffic marking performed in LAN L3 switch. The Marked traffic is then forwarded to ASR 1004.
To our surprise, we have observed that the ASR 1004 is forwarding packets out VIA the WAN interfaces without any Marking.
We have confirmed with Special software that traffic entering the LAN interface of ASR 1004 is having proper Marking (DSCP marking on the header)...
But for the same traffic is the WAN out is analyzed, we could find that all traffic is traversing without any marking... It seems that ASR is removing all Marking from IP header.
Please help with your view in this problem