What could drop OCI and transport connections on the network but not the link connection on the NIC?
Here is the deal. This has me stumped.
Server a has a Broadcom NIC linking at 1Gps to a cisco switch. We noticed over the week the OCI oracle database connection was dropping, we then notcied that HTTP connections and pc anywhere connections were also dropping at the same time on server a. However, we see no packet loss or drops on server a NIC, no collisions, no packet loss on the switch. The NIC is not loosing connection to the Switch. When we set the NIC to 100Mbps the drops go away go away and the link is stable.
So if i set server a NIC to 1Gbps, and hit the switch with heavy traffic, ping packets 8000bytes and then work on Server a it starts to drop connections on the apps, pc anywhere, Oracle, http but the NIC shows fine. no packet loss on the nic or switch no collisions and no drops.
There was a firewall changed on the network however this firewall does no intercept traffic between clients connecting to server a. What could cause the OCI oracle drops and the other application drops on server a at 1Gps that does not show up with 100Mbps link and also not show up with dropped packets, collisions or connection renegotiating?
this one has me stumped. Obviously we want to keep the link at 1Gbps.