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Port unreachable rcv from host -- Help


This issues is more about ICMP, I need some help on this.

I have Unity server connected to my gateway fa interface. This interface has IP Redirect enable to let it know that there is a more convinient path the a host.

I disable IP Redirect on the interface and I debug ip icmp and I got port unreachable rcv from unity to my gateway.

Does anyone has any idea what it means?


Re: Port unreachable rcv from host -- Help

If the Cisco IOS software receives a nonbroadcast packet that uses an unknown protocol, it sends an ICMP Protocol Unreachable message back to the source.

Similarly, if the software receives a packet that it is unable to deliver to the ultimate destination because it knows of no route to the destination address, it sends an ICMP Host Unreachable message to the source. This feature is enabled by default.

To enable the generation of ICMP Protocol Unreachable and Host Unreachable messages, enter the following command in interface configuration mode:

Switch (config-if)# [no] ip unreachables

check out the following link for further reference :