On AOS-CX chassis (and as well on VSF stack), the standby module have some dormant processes ready to start if active MM fails.
This is the case for many daemons (ex: routing, bfd, and so forth) so that switchover is hitless. Typically, protocols will restart for service continuity before their associated "dead-timer" expires.
In addition, the system database is copied from active to standby, to maintain all data/information computed by active MM for handling network services.
So when active MM fails, standby has everything.
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Vincent Giles
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Original Message:
Sent: Nov 03, 2020 07:28 AM
From: Luciano Carvalho
Subject: Core Switch with Active/Active processor
Yes.
As parnassus wrote before, this is true for the CX switches and also for for all dual management module switches that I know off.
Maybe if you share what are your requirements we can help you with some information on the best design options.
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Luciano Carvalho
Original Message:
Sent: Nov 03, 2020 05:03 AM
From: Aria adhiguna
Subject: Core Switch with Active/Active processor
So it generally only works on Active/Standby mode, even for OS-CX? Thank you everyone.
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Aria adhiguna
Original Message:
Sent: Oct 29, 2020 04:42 AM
From: Aria adhiguna
Subject: Core Switch with Active/Active processor
So there is a requirement for a modular chassis Core Switch with Redundant Active/Active processor. I see that 5400r and 12900 has redundant processor, but is it active/active? What switch would you suggest?
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AA
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