Module 5: Networking Lesson 2: Modifying Standard Virtual Switch Properties Flashcards
(22 cards)
Where are the standard virtual switch settings found in Client?
ESX/ESXi host configuration tab, networking link, properties
VLANs can be configured at what level?
Port group
What are the three policies on a standard virtual switch?
Security, traffic shaping and NIC teaming
To what can the three policies be set?
VMkernel port, a virtual machine port group or a service console port (ESX only)
The network security policy contains what exceptions?
Promiscuous mode, MAC Address Changes and Forged Transmits
What is the MAC Address Changes security policy?
If a guest attempts to change the MAC address assigned to the vNIC, it stops receiving frames (default Accept)
What is the Forged Transmits security policy?
The vNIC drops frames that the guest sends where the source MAC address is different than assigned to the vNIC
What traffic can traffic shaping control?
Shapes outbound traffic only
What are the three port group level overide settings at the virtual switch?
Average bandwidth, peak bandwidth and burst size
What is the Average Bandwidth override setting?
The number of kbps to allow across a port, averaged over time
What is the Peak Bandwidth override setting?
The maximum number of kbps to allow across a port when it is sending a burst of traffic
What is the Burst Size override setting?
The maximum number of kbps to allow in a burst. If a port gains a burst bonus it might be given temporary higher speeds
What is port-ID load balancing?
The NIC is determined by the ID of the virtual port a VM is connected to
What is MAC-based load balancing?
The NIC is determined by the MAC address of the virtual port a VM is connected to
What is Source-IP based load balancing?
A NIC for each outbound
packet is chosen based on its source and destination IP address
What load balancing type has higher CPU
overhead but a better distribution of traffic across physical NICs
Source-IP based
What load balancing type has low overhead and is compatible with all switches, but might not spread traffic evenly across the physical NICs
MAC-based
What load balancing type is simple and fast and does not require the VMkemel to examine the frame for necessary information
Port-ID based
What can the VMkernel use to detect a network failure?
Link status, beaconing or both
Beaconing introduces a load of a ______ approximately every _______ per physical NIC
Beaconing introduces a load of a 62-byte packet approximately every 10 seconds per physical NIC
What happens when Failback is set to yes?
The failed adapter is returned to active duty immediately upon recovery
What happens when Failback is set to no?
The failed adapter is left inactive even after recovery until another NIC fails, requiring its replacement
