Vcap-Dca Objective 2.1 – Implement And Manage Complex Virtual Networks

Front 1

Identify common virtual switch configurations

Back 1

Networking Guide, pages 13-19 (vSS), pages 21-36 (vDS)

Use multiple physical uplinks per vSwitch

Separate network traffic for VMkernel ports and VM traffic

Select the appropriate load balancing policy for your configuration

Use a dedicated and separate physical switch for IP-based storage (iSCSI, NFS).

Secure network for Management Network traffic.

Front 2

Configure SNMP: for vCenter

Back 2

Server and Host Management, page 39 (vCenter)

1. Click Administration -> vCenter Server Settings
2. In the settings window, select SNMP.
3. In the "Receiver URL" field, enter the host name or IP address of the SNMP receiver.
4. In the field next to that, enter the port number of the receiver.
5. In the "Community" field, enter the community identifier.
6. Click OK

Front 3

Configure SNMP: for ESXi host

Back 3

Command Line Interface Solutions and Examples, page 136

Specify the communities and trap targets:
vicfg-snmp -t <target>@<port>/<community>

Enable the SNMP service:
vicfg-snmp -E

Send a test trap to verify the agent is configured correctly:
vicfg-snmp -T

Front 4

Configure vSS settings using command line tools: vswitch

Back 4

Command Line Interface Solutions and Examples, pages 115 -122

esxcli network vswitch standard

command: policy, portgroup, uplink, add, list, remove, set

command options:
-p for port
-v for vswitch

Front 5

Configure vSS settings using command line tools: portgroup

Back 5

Command Line Interface Solutions and Examples, pages 115 -122

esxcli network vswitch standard portgroup

command: add, list, remove, set

command options:
-p for portgroup
-v for vswitch

Front 6

Configure vSS settings using command line tools: Add a vswitch

Back 6

Command Line Interface Solutions and Examples, pages 115 -122

esxcli network vswitch standard add -v "vSwitch#"

Front 7

Configure vSS settings using command line tools: Add a portgroup to a vswitch

Back 7

Command Line Interface Solutions and Examples, pages 115 -122

esxcli network vswitch standard portgroup add -v "vSwitch#" -p "test"

Front 8

Analyze command line output to identify vSS and vDS configuration details: List vSwitches

Back 8

Command Line Interface Solutions and Examples, pages 115 -122

esxcli network vswitch standard list

Front 9

Analyze command line output to identify vSS and vDS configuration details: List dvSwitches

Back 9

Command Line Interface Solutions and Examples, pages 115 -122

esxcli network vswitch dvs vmware list

Front 10

Analyze command line output to identify vSS and vDS configuration details: Create/configure vmknics

Back 10

Command Line Interface Solutions and Examples, pages 115 -122

esxcli network ip interface

commands: add, list, remove, set

Front 11

Analyze command line output to identify vSS and vDS configuration details: Configure physical interfaces

Back 11

Command Line Interface Solutions and Examples, pages 115 -122

esxcli network nic (commands to configure physical interfaces)

Front 12

Configure NetFlow on vDS

Back 12

Networking Guide, page 70

From Inventory -> Networking

1. Select the dvSwitch you want to configure NetFlow on.
2. Right click on the dvSwitch and select Edit Settings.
3. Click on the NetFlow tab.
4. Type the IP address and port of the NetFlow collector.
5. Type the dvSwitch IP address (can be 1.1.1.1 or whatever has meaning to you).
6. Click OK

You also need to enable NetFlow on the portgroup you want to collect on.

Front 13

Enable NetFlow on Port Group

Back 13

Networking Guide, page 70

From Inventory -> Networking

1. Select and expand the vDS.
2. Right-click on the Port group.
3. Click Edit.
4. Select Monitoring.
5. Enable NetFlow.

Front 14

Determine appropriate discovery protocol

Back 14

From a vSphere standard switch only CDP can be enabled.

On a vSphere Distributed Switch, both CDP and LLDP can be enabled.

Basically, CDP is for Cisco switches. LLDP works with everything else (and Cisco)

Front 15

Modify the behavior of CDP from command line

Back 15

Determine current CDP status of a switch:

vicfg-vswitch -b "vSwitch#"

(by default this returns listen, if enabled)

Set the behavior to one of the following: listen, advertise, or both:

vicfg-vswitch -B both "vSwitch#"

Front 16

Enable CDP on vDS

Back 16

1. Right click on the dvSwitch and select Edit Settings.
2. On the Properties tab, click Advanced.
3. Under Discovery Protocol, select Enabled, from the drop-down status menu.
4. Select Cisco Discovery Protocol from the "Type" drop down menu.
5. Select the CDP mode from the "Operation" drop down menu.

Front 17

Enable LLDP on vDS

Back 17

1. Right-click on the dvSwitch and select Edit settings.
2. On the Properties tab, click Advanced.
3. Under Discovery Protocol select Enabled, from the drop-down status menu.
4. Select Link Layer Discovery Protocol from the "Type" drop-down menu.
5. Select the LLDP mode from the "Operation" drop-down menu.

Front 18

CDP/LLDP Options: Listen

Back 18

ESXI detects and displays information about the associated switch port, but information about the vSphere distributed switch is not available to the switch administrator.

Front 19

CDP/LLDP Options: Avertise

Back 19

ESXi makes information about the vSphere distributed switch available to the switch administrator, but does not detect and display information about the switch.

Front 20

CDP/LLDP Options: Both

Back 20

ESXi detects and displays information about the associated switch port and makes information about the vSphere Distributed Switch available to the switch administrator.