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57 Cards in this Set
- Front
- Back
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2 connection types |
Virtual Machine - for VMs VMkernel - for host-based connections (management traffic, vMotion, FT and storage |
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Default Port groups when creating a vSwitch |
VM Network Management Network |
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Max number of ports on a vSwitch |
4088 ports |
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3 switch security policies |
* Promiscuous Mode
* MAC Address Changes * Forged Transmits |
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vSwitch Capabilities (6) |
* Internal Layer 2 Traffic
* Communicate with external networks * supporting VLANs and 802.1Q * Outbound Traffic Shaping * NIC Teaming * CDP |
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Default status of traffic shaping |
Disabled |
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Switch created by default |
vSwitch0 |
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what is a vmnic |
Physical Adapter |
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What is vNIC? |
virtual NIC presented to VM |
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How does addition of vmnic affect VMs? |
Non-Disruptive |
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3 types of NICs |
vmnic - Physical vNIC - VM vmknic - Host traffic |
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what is vmknic |
NIC for VMkernel ports |
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difference between configuration of VMkernel and VM ports? |
VMkernel ports are assigned IP addresses |
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VMware best practice for VMkernel traffic |
Separate network for each |
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4 VMkernel options |
* vMotion Traffic
* FT Logging * Management Traffic * vCloud Distributed Storage |
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VMkernel setting for network storage (iSCSI/NFS) |
deselect all |
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Only configurable option on vSwitch VM connection type |
VLAN ID |
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Additional capabilities of dvSwitch (15) |
1. Bidirectional Traffic Shaping
2. Centralized vCenter Administration and Provisioning 3. 3rd Party Switches (incl Cisco Nexus 1000v) 4. Dynamic Adjustment for Load-Based NIC Teaming 5. Enhanced security and monitoring for vMotion Traffic 6. 802.1p tagging for QoS 7. LLDP 8. NetFlow 9. Network I/O Control 10. Port Mirror 11. Private VLAN Support 12. Management Network Rollback and Recovery 13. Network Health Check 14. LACP 15. Traffic Filtering and Marking |
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3 types of PVLAN Ports |
Promiscuous Isolated Community |
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Added capabilities in dvSwitch 4.1 (2) |
* Load-based teaming
* Network I/O Control |
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Added capabilities in dvSwitch 5.0 |
* User-definced resource pools in Network I/O Control
* NetFlow * Port Mirroring
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Added capabilities in dvSwitch 5.1 (4) |
* Management Network Rollback and Recovery
* Health Check * Enhanced Port Mirroring * LACP |
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Added capabilities in dvSwitch 5.5 (2) |
* Traffic Filtering and Marking
* Enhanced LACP Support |
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What must be done to remove a vSwitch or remove host from dvSwitch |
Ensure all hosts removed |
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what is dvUplink? What advantage does it provide? |
abstraction of physical NIC on dvSwitch/ Allows hosts to have different vmnic configurations and still use the same teaming, load balancing and failover policies |
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what is dvSwitch equivalent of port group? |
dvPort Group |
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difference in VLANS between vSwitch and dvSwitch |
vSwitches can have one LAN per port group. dvSwitches can have multiple and use trunking |
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What is Port Binding? |
Determines when dvPorts in a port group are created/Assigned to a VM |
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default port binding |
Static |
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Static Port binding |
Port assigned and reserved when VM Connected to port. |
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Dynamic Port Binding |
Port assigned when VM connected and powered on. Disconnects with disconnected or powered off. |
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Ephemeral Port binding |
Prt Created when VM powered on and connected. Deleted when VM powered off or NIC disconnected. |
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Recommended use of Ephemeral Port Binding |
Only for recovery purposes or when vCenter server unavailable |
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Where can Ephermerl vinding be managed? |
vCenter or ESXi host |
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What happens to Network stats for 3 port binding types during vmotion /Power Cycle |
Static - Kept/Kept Dynamic - Kept/Lost Ephemeral - Lost/Lost |
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What is a virtual adapter? |
Used to provide VMkernel connections on dvSwitch |
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Where are virtual adapters configured? |
ESXi host level |
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What are 4 shared vSwitch/dvSwitch Policies? |
Failover and Load Balancing Policy Security Policy Traffic Shaping Policy VLAN Policy |
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Load Balancing Options (5) |
* Route based on originating Virtual Port
* Route Based on IP Hash * Route Based on Source MAC Hash * Route Based on Physical NIC Load * Use Explicit Failover Order
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Load balancing option only available on dvSwitch |
Route based on Physical NIC Load |
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Route Based on IP hash reqirement (2) |
* EtherChannel must be configured on physical Switch.
* EtherChannel should be only used with IP hash |
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Options for Network Failover Detection (2) -Default? |
Link Status Only - Default Beacon Probing |
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Recommendation on Failover Detection Setting? |
Use Link Status Only unless there is a specific reason to use Beacon Probing |
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Notify Switches Options (2) - Default? |
Yes - Default No |
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Preferred Notify Switches Setting, and when not to use |
No, unless using Microsoft NLB in unicast mode |
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Failback options (Default)? |
Yes - Default No |
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Failover Order Options (3) |
Active Standby Unused |
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What traffic MAC Address changes and Forged Transmits affects |
MAC Address - Received by VM Forged Transmits - Sent by VM. |
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Traffic Shaping Options (And units) |
Average Bandwidth (Kbps) Peak Bandwidth (Kbps) Burst Size (Kilobytes) |
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Where are traffic shaping policies applied? |
each vmnic on a port group (not on switch as a whole) |
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Switch Tagging options and where tagging done |
External Switch Tagging (EST) - physical switch Virtual Switch Tagging (VST) - vSwitch/dvSwitch Virtual Guest Tagging (VGT) - driver on VM |
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What kind of port does ESXi connect to on external switch with each tagging type? |
EST - Access VST - Trunk VGT - Trunk |
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What is required on vSwitch/dvSwitch for VGT? |
vlan 4095 (vSwitch)/VLAN trunking (dvSwitch) |
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What do Port Blocking Policies do? |
Block all ports on a porg group |
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What category is port-blocking policies under? |
Miscellaneous |
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Size of Jumbo frames? |
1,500-9,000 Bytes |
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Where must Jumbo Frames be enabled? |
End to end. |
