Regular traffic flapping between Cisco 7604 & Cisco12000 over POS
We are a telecom provider. Edge Router is Cisco 7604 with SIP 200 cards. Core router is Cisco 12406 . the link between above two routers is STM1 connection which is terminated in to POS ports of both routers. The issue is traffic flaps every 15 minute intervals regularly. normal traffic is 80mbps and it drops around 10mbps each and every intervals(15minutes) every day pattern is started 8.35am and repeating up to 5pm.