AOS Release 6.4.6.R01 Release Notes November 2013
Hot Swap / Redundancy
Feature Exceptions
CMM and Power Redundancy Feature Exceptions for OmniSwitch
• Manual invocation of failover (by user command or Primary pull) should only be done during times
when traffic loads are minimal.
• Hot standby redundancy or failover to a secondary CMM without significant loss of traffic is only
supported if the secondary is fully flash synchronized with the contents of the primary’s flash.
• Hot standby redundancy or failover to a secondary module without significant loss of traffic is only
supported if all the remaining units in the stack are fully flash synchronized with the contents of the
primary’s flash.
• Failover/Redundancy is not supported when the primary and secondary CMMs are not synchronized
(i.e., unsaved configuration, different images, etc.). In this case, upon failover, all the NIs will reset and
might go to "down" state, and to recover, need to power down the switch and power it back up.
• Primary and Redundant power supplies must be of the same type. For example, having a primary
510W power supply with a redundant 360W power supply is not supported.
Hot Swap Feature Exceptions for OmniSwitch 9000E
• Hot swap of NIs needs to be preceded by the removal of all cables connected to the NI.
• Hot swap of unlike modules is not supported.
• The reload ni command is not supported. Please use no power ni/power ni as an alternative.
• All insertions of NI modules cannot be followed by another hot swap activity until the OK2 LED on
the inserted NI blinks green.
Hot Swap Feature Exceptions for OmniSwitch 6850E/6855
• When removing modules from the stack (powering off the module and/or pulling out its stacking
cables), the loop back stacking cable must be present at all times to guarantee redundancy. If a module
is removed from the stack, rearrange the stacking cables to establish the loopback before attempting to
remove a second unit.
• When inserting a new module in the stack, the loop back has to be broken. Full redundancy is not guar-
anteed until the loop back is restored.
• Hot swap of unlike chassis is not supported.
Hot Swap Time Limitations for OmniSwitch
• All removals of NI modules must have a 30 seconds interval before initiating another hot swap activity.
• All insertions of NI modules must have a 3 minutes interval before initiating another hot swap activity.
• All hot swaps of CMM modules must have a 10 minutes interval before initiating another hot swap,
reload or takeover activity.
• All takeovers must have a 10 minutes interval before following with another hot swap, reload or take-
over activity.
OmniSwitch 6850E/6855/9000E------ Release 6.4.6.R01 Page 39 of 80
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