What speed settings have you used for the nic? If it is set to auto negotiate, try setting them both to a specific speed. If they are locked down, try autonegotiate.
Have you contacted Cisco about this? Have you tried another port on the Cisco? Have you tried another cable?
I have heard of no issues with our appliances connecting to Cisco switches, so if this is a problem with our hardware/software, then it is a new issue.
I have 2 interface connect to same cisco 3560 switch when the problem occur on both 2 interfaces. I try to change a interface speed/duplex (one fix speed and one auto).But the problem still error on both interfaces(2 interface input errors).
Have you contacted Cisco about this?
I don't contact to cisco. When this problem found, I don't see packet error on cisco interface and still have problem when only reset interface (shutdown/no shutdown command) at cisco switch. But the problem disappear when reset interface at McAfee firewall.
Have you tried another port on the Cisco? Have you tried another cable?
I have two interfaces which connect between firewall and cisco switch. I found problem on both interfaces.