Q: 7
If 'check-gateway' is enabled for an ECMP route and one of the gateways is unreachable, then:
Options
Discussion
Option B Official guide spells this out, best to double-check with RouterOS labs if you want to see it in action.
Option B
Every time MikroTik throws this 'ECMP + check-gateway' combo on exams, it's always about dropping the dead gateway from load balancing. Only live ones get used for round robin. I think that's pretty much official behavior, unless they change the RouterOS docs again.
Every time MikroTik throws this 'ECMP + check-gateway' combo on exams, it's always about dropping the dead gateway from load balancing. Only live ones get used for round robin. I think that's pretty much official behavior, unless they change the RouterOS docs again.
So tired of MikroTik wording on these. Option B
A , had something like this in a mock. If ECMP is active it should send traffic to all gateways, even if one drops out. Not 100% on this, correct me if wrong.
B here, but open to C if anyone has seen a case where the route actually goes inactive instead. Not totally confident.
Yeah, this matches what I've seen in practice. B is correct, since with 'check-gateway' enabled, RouterOS automatically avoids sending packets to gateways it can't reach. Saw a similar question come up in some exam reports recently.
Probably B, seen similar in official guide and labs show unreachable gateways dropped from selection.
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