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We are considering deploying chassis bonding for disaster recovery and for business continuity. We are planning to have each building connect to 2 core switches that are in two different data centers. The long term goal is that we could lose a whole data center and still survive.
The other big reason we want to to do this is to eliminante outages due to upgrades (BC). We enjoy this functionality today with our firewalls, wireless controllers, SAN, and VMWare infrastructure. For all of these technologies we are able to do upgrades in the middle of the day, without claiming an outage. Is it reasonable to expect the same from chassis bonded cores?
I don't think we'd ever actually do a core upgrade in the middle of the day. However, can I expect to be able to do this without incurring an outage even when upgrading accross major versions?
For those of you who have deployed chassis bonding, please help us with our expectations. Have you found upgrades to be seamless or does it depend on the features being added, or the level of upgrade you are performing? Also, if you were to actually lose a core would you skip a beat? For example, could a voice call survive such an event?
IT Infrastructure Manager
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