On 1/30/12 9:12 PM, Harald Stürzebecher wrote:
What happens if one switch fails? Can the remaining equipment do some
useful work until a replacement arrives?
Depending on the answers it might be better to have two or more
smaller stackable switches instead of one big switch, even if the big
one might be cheaper.
Or just run two totally independent switches and either support two
different L3 networks, or setup bonded interfaces which connected to
each switch. If you lose a switch, then you can continue to function
without a service interruption.
I just looked at the Netgear website and googled for prices:
Two Netgear GS724TS stackable switches seem to cost nearly the same as
one GS748TS, both are supposed to have "a 20 Gbps, dual-ring, highly
redundant stacking bus".
The issue with most stacking switches is that you don't have any real
redundancy without either doubling up on ports so each server is
multi-homed into multiple switches, or having to manually move ports off
a dead switch. Typically with a stacking configuration if you lose the
'master' switch the whole stack has to reboot which causes an outage.
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