Category: Networking

Load Based Teaming

In vSphere 4.1 a new network Load Based Teaming (LBT) algorithm is available on the distributed virtual switch dvPort groups. The option “Route based on physical NIC load” takes the virtual machine network I/O load into account and tries to avoid congestion by dynamically reassigning and balancing the virtual switch...

Removing orphaned Nexus DVS

During the test of the Cisco Nexus 1000V the customer deleted the VSM first without removing the DVS using commands from within the VSM, ending up with an orphaned DVS. One can directly delete the DVS from the DB, but there are bunch of rows in multiple tables that need...

NFS and IP-HASH loadbalancing

My background is Fibre Channel and beginning 2009 I implemented a large iSCSI environment. The “other” storage protocol supported by VMware, NFS, is rather unknown to me. And to be honest I really tried to keep away from it as much as possible, thinking it was not a proper enterprise...

Flex10 update

In my first post I had a question about the path data travels when sent to a “standby” virtual connect module. To quote my own question : “What will happen if the VMkernel decides to use that nic to send IO? Is the Flexnic aware of the standby status of...