HP StorageWorks 2/140 FW 07.01.02/HAFM SW 08.06.00 HP StorageWorks HA-Fabric M - Page 18
Advanced Fabric Diagnostics, within a SAN. The Embedded Port Log is available via EWS, CLI, and HAFM.
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Advanced Fabric Diagnostics This provides tools to monitor the fabric and identify potential problems before they impact network and application performance. Tools include ISL Fencing, new switch-centric Fabric and Embedded Port Logs, an Audit Log for the embedded user interfaces, and access to the Digital Diagnostic capabilities included with newer SFP transceivers. ISL fencing Also called Port Fencing, this feature allows customers to set up policies for blocking an ISL when problems occur that cause an ISL to "bounce" or repeatedly attempt to establish a connection. Any time an ISL is brought up or down, a fabric rebuild occurs, which can cause disruption in some environments. ISL Fencing will lessen the likelihood of having a problematic ISL connection disrupt a SAN. To configure this feature, users set policies with thresholds based on the number of port events occurring during a set time period. If a port generates enough events to exceed the policy threshold, the port is automatically blocked and the user is notified. Transmit and receive traffic is disabled until the user can investigate, solve the problem, and manually unblock the port. Embedded Audit Log The Audit log is a new log available through CLI and EWS. This is not the same Audit Log available through HAFM. The log records all configuration changes to the switch to provide data for analyzing problems caused by configuration changes. Embedded Port Log The Embedded Port Log is a new log that records all Fibre Channel traffic from or to the embedded port. This log is actually implemented as two logs, one that allows entry wrapping and one that stops adding entries when filled. The logs allow filtering based on Class F frames, as well as by port number, to isolate specific events or problems. This feature is intended for advanced users to diagnose and troubleshoot traffic problems within a SAN. The Embedded Port Log is available via EWS, CLI, and HAFM. Embedded Fabric Log The switch-based fabric log records events related to the following services: • Fabric Controller • Path Selection • Login Server • Name Server 16