While troubleshooting a Workload Management deployment, I logged into my NSX-T Manager appliance to see if there were any issues. I immediately noticed several alarms, with a majority of them relating to Password Management. Sure enough, my local accounts all expired. Let’s reset the accounts with REST API! For the purposes of this example, I…
I ran into an issue when enabling Workload Management in my lab where I was unable to ping the Control Plane IP Node IP Address. I followed a few different blog posts to get the environment setup. Specifically, Florian Grehl’s blog and Viktor van den Berg’s blog. I highly recommend them, as they are both…
Default untagged VLAN for CVM and AHV host The setup shown here well for situations where the switch administrator can set the CVM and AHV VLAN to untagged. Tagged VLAN for CVM and AHV host If you do not want to send untagged traffic to the AHV host and CVM, or if security policy doesn’t…
Open vSwitch (OVS) Open vSwitch, or OVS, in short is an open source software switch. It is installed and run in the Linux kernel. It mimics a Layer 2 switch. In other words, it learns MAC addresses and maintains a MAC address table. It makes forwarding decisions based on these MAC addresses. It has virtual…
3-Tier Network Architecture Core layer Considered the backbone of networks Largest, fastest, yet also most expensive routers Used to merge geographically separated networks Purpose: Move data across network at highest possible speed Aggregation (aka Distribution) layer Located between access and core layers Purpose: provide boundary definition by implementing access lists (filters) Defines policy for the…
Default AHV Network Configuration After Foundation is complete, by default: CVM attached to bridge br0 and virbr0 All physical NICs inside bond br0-up Active/Backup bond mode More information about Bond Options can be found here. Best Practice Configuration Single OVS bridge – br0 1 Gbps ports removed from br0 Default bond mode (Active/Backup) manage_ovs —bridge_name…
The network visualization page in Prism makes use of SNMP and LLDP to find info about the connected top of rack switch. SNMP is used to get switch information like the name, ports, and port statistics. LLDP is used by the AHV hosts to find out which Nutanix node is plugged into which switch port….