Hi, we have GRE tunnel with EIGRP running between HK and India office. Sometimes, the response of some services through the GRE tunnel is very slow. At that moment, when we ping the GRE tunnel IP, there is serious delay, however, there is no problem in pining the router real IP.
There is netflow configured in the routers. And I noticed the CPU utilization is a bit high. Here is the "show proc cpu" from two routers:
CPU utilization for five seconds: 99%/8%; one minute: 46%; five minutes: 35%
CPU utilization for five seconds: 75%/21%; one minute: 40%; five minutes: 30%
Is that a cause for this problem?
Any other possible reasons?