I have defined a QOS in the WAN Router and observed the traffic for 20 mins and found the drops in the COS 4, now we need to check the traffic fall under this COS along with Src IP, Dest IP , Port number with Protocol detail.
Please find the below settings for COS 4 on the router.
Class-map: COSP_EVPN_STIA_TC2_COS4 (match-any)
Match: access-group name COS4_APP_TC2
Service-policy : PE_STIA_64K_COS4_TC2
CIR = 64 Kbps
(depth/total drops/no-buffer drops) 0/944/0
sh access-list COS4_APP_TC2
Extended IP access list COS4_APP_TC2
10 permit ip any any (5321040 matches)