4 – Managing SwitchesResetting a Switch4-14 59235-02 AL4.5Resetting a SwitchResetting a switch reboots the switch using configuration parameters in memory.Depending on the reset type, a switch reset may or may not include a Power OnSelf Test or it may or may not disrupt traffic. Table 4-3 describes the types ofswitch resets.During a hotreset operation, fabric services will be unavailable for a short period(30-75 seconds depending on switch model). Verify all administrative changes tothe fabric (if any) are complete before performing an Nondisruptive Code Loadand Activation (NDCLA). When upgrading firmware across a fabric usingnon-disruptive activation, upgrade one switch at a time and allow 75 secondsbetween switches.Common administrative operations that change the fabric include: Zoning modifications Adding, moving or removing devices attached to the switch fabric. Thisincludes powering up or powering down attached devices. Adding, moving or removing ISLs or other connections.After an NDCLA operation is complete, management connections must bere-initiated: QuickTools sessions will re-connect automatically Telnet sessions must be restarted manually.Applicable Code Versions: Future switch code releases will be upgraded non-disruptively unlessspecifically indicated in its associated release notes An NDCLA operation to previous switch code releases is not supported.CAUTION! Changes to the fabric may disrupt the NDCLA process.Table 4-3. Switch ResetsType DescriptionHot Reset Resets a switch without a Power On Self Test. This reset activatesthe pending firmware, but does not disrupt switch traffic. If errorsare detected on a port during a hot reset, the port is reset automat-ically.Reset Resets a switch without a Power On Self Test. This reset activatesthe pending firmware and it is disruptive to switch traffic.
