Cabletron Systems SEHI-22/24 User Manual

Also see for SPECTRUM: User guide User guide User guide User guide User guide

Contents

Monitoring Hub Performance2-7Using the SEHI Hub View• Blue indicates that the port has been disabled through management.• Yellow indicates that the port is enabled but does not currently have a validconnection. This usually indicates that the device at the other end of thesegment is turned off.• Red indicates that the port is enabled, but is not able to pass packets. Thisgenerally means that the port has been segmented by management afterexperiencing an excessive number of collisions; for a BNC (thin coax) port,however, this may only mean that no cable or terminator has been connected.When the Admin Status port display option is active, only two colors apply: aport will be displayed in green if it is enabled by management, regardless ofwhether or not there is a cable attached or a valid link signal detected; a portdisabled by management will display as blue.Monitoring Hub PerformanceThe information displayed in the Hub View can give you a quick summary ofdevice activity, status, and configuration. SPMA can also provide further detailsabout device performance via its three-level menu structure. The Device, Module,and Port menus (Figure 2-5) give you control over the device at these three levelsand give you access to the tools, menus, and windows that let you monitorspecific aspects of device performance, change hub display options, and set SEHIoperating and notification parameters. Remember, though many functions willoperate the same at each level, those accessed via the Device menu control orprovide information about the SEHI-managed stack as a whole; those accessedvia the Module menu control or provide information about a single hub in thestack; and those accessed via the Port menu control or provide information abouta single port.Figure 2-5. The SEHI’s Device, Module, and Port MenusHub performance data available through these menus includes: