Considering recent posts on IRF, there was a need to get some availability with the more cost effective switches from the Aruba / ProCurve world. I did some research on that and luckily there are more than one option today with this platform – at least the 5400s (…) and in my case 2930s support this by default.
Considering redundancy you basically consider two types of high availability and these cover Layer 2 availability, traditionally suited with link aggregation which conventionally does not span several chassis, and Layer 3 availability for a redundant default gateway service.
In a traditional design, then with a couple of switches (at least four), you configure VRRP for L3 redundant default gateway service, LACP – link aggregation groups for L2 Continue reading →
Monitoring ESXi with an standard open source monitoring tool usually requires SNMP. Searching for SNMP in the vCenter configuration context this simply allows you to start the service – but not exactly leads to success in the first place. Probably you get an error.
You check in the security profiles and find the service stopped although it is configured to start with the host. Manual start delivers an “ooops”.
Looking for an clickable configuration context did not lead to an solution I was aware of. Continue reading →
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