958-000276-007, March 2005)

Workaround

None.

ISL disconnect causes NOS error with the OpenVMS operating systems

When an ISL connection is physically removed between directors or switches, the Fibre

Channel Adapter model FCA2354 transmits a Not Operational Sequence (NOS) error.

This is observed as an entry in the HAFM appliance Link Incident log for the port in

which the FCA2354 is attached. The director’s Hardware View also displays a yellow

triangle icon over the port that detected this incident. The fabric op eration or data

movement is not disrupted by these incidents, and you can clear a ler ts from these

incidences using the following procedure.

Workaround

Use these steps

to clear the incident alerts.

1. At the HAFM Hard

ware View,clicktheportmoduletoopenthePort Card

View.

2. Right-click on the port with the yellow triangle icon, and choose Clear Link

Inciden t Alert(s).

Support for speed Auto-Negotiate

Auto-negotiate is supported. However, HP recommends that the port speed for E_Ports

(for Interswitch Links, or ISLs) be set to a spec ific port speed (1Gb/sec or 2Gb/sec,

as appropriate for the speed of the directors or edge switches being connected) instead

of to Negotiate. Using a specific port speed decreases the time for a fabric build

in response to some perturbation event in the fabric. Similarly, setting a specific port

speed for N_Ports also decreases fabric build time. However, setting a specific port

speedforN_Portsisnotrequired.

There are a few older HBA devices that do not always succeed in logging in to a switch

port when the port speed is set for auto-neg otiate.

Workaround

If an older HBA has difficulty logging into a switch p ort that has its port speed

configured as Negotiate,configurethatportspeedto1Gb/sec or 2Gb/sec

according to the operation speed of the HBA connected to that port.