Controllers A and B of an S5100 connect to a switch through management network ports. Meanwhile, each four service network ports of both controllers are respectively assigned a different IP address and network segment for connecting to the switch. After the S5100 is upgraded and then connected to two HBAs on a host where no multipathing software is installed, the host cannot set up access to the S5100. Alarm information: The communication between the host and the S5100 stutters, leading to unstable access to the S5100.
The potential causes of this problem are as follows:
1. The host is not installed with the multipathing software.
2. The multipathing software is incorrectly installed on the host