3PAR InForm OS 2.3.1 MU2 Release Note (325-200142 Rev B, October 2010)

2.9
Limitations of the InForm OS
InForm OS Version 2.3.1 MU2 3PAR InForm OS Release Notes
3PAR Confidential
2.6 Limitations of the InForm OS
2.6.1 Connectivity Issues with Remote Copy IP Interfaces for 100Mbps Switch
Ports
3PAR has observed connectivity issues with Remote Copy IP interfaces connected to 100Mbps
switch ports that can cause the Remote Copy links to negotiate their speed and duplex settings
incorrectly. This issue has the potential to cause the Remote Copy IP links, as well as the
connected switch ports, to stop working (e.g., states of offline, down, unknown, loss_sync). In
many cases, the 3PAR controller-node has to be rebooted to clear this condition.
In some configurations, depending on switch type and InForm OS version, selecting Auto-
negotiation has overcome the problem, while in others, forcing the ports to 100/Full has
provided relief. In all cases, utilizing a 1Gbps switch port has alleviated all negotiation issues.
To resolve this issue, 3PAR requires all Remote Copy IP ports to be connected to a 1Gbps switch
port in order to alleviate the observed connectivity and negotiation related problems.
This reduction in functionality is described in Product_Alert_247 200011-
RevA_RCIP_Link_Speed.