Hi - On 11/15/2017 2:02 AM, Balazs Lengyel wrote:
While a server may correctly support multiple versions, the human operator on the CLI has a 99% chance of mixing up which version he is using. Humans will not check every type and leaf to check that they remember the little differences between model versions. It is a recipe for human mistakes. According to some statistics 50% of downtime is caused by human errors, so we should not provide the operator with a gun to shoot himself. Ericsson has a rule never to have multiple versions of the same module on a network node.
Does this mean that they require all line cards in a chassis to have exactly the same firmware revision level? If so, when a card with a newer firmware revision level is swapped in, does that require all other cards of the same type in that chassis to also be replaced concurrently? Sounds like even a fairly routine/minor update/repair would effectively result in a system outage. Randy _______________________________________________ netmod mailing list netmod@ietf.org https://www.ietf.org/mailman/listinfo/netmod
