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VM Tracer

This chapter describes VM Tracer configuration and usage and contains these sections:

VM Tracer Introduction

VM Tracer is a switch feature that determines the network configuration and requirements of connected VMware hypervisors. The switch uses VMware's SOAP XML API to discover VMware host server components, including:

  • instantiated VMs with their network configuration (VLANs and distributed/virtual Switches).
  • server hardware IPMI data which can be shown to the network manager.

VM Tracer also supports adaptive auto-segmentation, which automatically provisions and prunes VLANs from server-switched ports as VMs are instantiated and moved within the data center.

VM Tracer Description

Cloud operating systems manage large virtualized computing infrastructures, including software and hardware. Cloud operating systems consist of virtual machines and hypervisors:

  • A virtual machine (VM) is a software implementation of a computer that operates as running on dedicated physical hardware. Multiple VMs share physical machine resources from a single physical device. Each VM is controlled by its operating system.
  • A hypervisor, also called a virtual Machine Manager (VMM), is software that manages multiple operating systems running concurrently on a physical device.

VM Tracer tracks activity of VMs that are controlled by hypervisors connected to the switch’s Ethernet or LAG ports. VM Tracer supports vSphere versions 6.0– 6.5. vSphere features include distributed virtual switches (DVS) and VM movement among VMware servers (VMotion).

vSphere components include:

  • ESX and ESXi: hypervisors that run on VMware host server hardware.
  • vCenter: centralized tool that manages multiple servers running VMware hypervisors.
  • NSX for vSphere® (NSX-V): network virtualization platform delivering networking and security.

Monitoring VLAN based configurations requires vCenter access. Monitoring VXLAN based configurations requires access to vCenter and NSX-V. The following sections describe topologies that monitor these networks:

Monitoring VLAN Based Configurations

vCenter manages ESX hosts and VMs through a central database. VM Tracer identifies interfaces connected to a specified ESX host and sends discovery packets (CDP or LLDP) on interfaces where VM Tracer is enabled. The ESX host updates the vCenter when it receives a discovery packet. VM Tracer reads this data from the vCenter through a SOAP XML API to associate the ESX host to the connected switch ports. The network topology of this configuration is displayed below.

Figure 1. VM Tracer Topology – Monitoring VLAN Based Configurations

VM Tracer connects to a maximum of four vCenters through a SOAP (Simple Object Access Protocol) API to discover VMs in the data centers that the vCenters manage. VM Tracer maintains a list of VMs in the data center and gathers network related information about each VM, including the number of Vnics (virtual network interface card), the MAC address of each Vnic, the switch to which it connects, and the host on which it resides. VM Tracer also identifies the host NICs connected to the switch through the bridge MAC address and the interface port name. VM Tracer then searches for VMs on this host and connected to the vswitch or dvswitch whose uplink is mapped to the connected NIC.

For each connected interface, VM Tracer creates a VM Table that lists its active VMs, sorted by Vnic MAC address. Each VM entry includes its name, Vnic name, VLAN, switch name, datacenter name, and portgroup. An entry is deleted when the corresponding VM is removed, moved to a different host, or its Vnic is no longer part of the vswitch or dvswitch. An entry is added when a VM is created or moved to a host connected to the interface. VM Tracer monitors vCenter for VM management updates. If an interface goes down, all VM entries for that interface are removed from the VM Table.

Monitoring VXLAN Based Configurations

Monitoring VXLAN based configurations require access to the NSX for vSphere® (NSX-V), in addition to the configuration described in Monitoring VLAN Based Configurations. Each VM Tracer session can communicate with one NSX-V through a REST interface over XML and gathers VXLAN information by polling it on a 30 second polling cycle. VXLAN data that the switch receives from the NSX-V includes:

  • VNI range.
  • VXLAN segment.
  • Multicast address range.
  • network scope.

The network scope specifies the virtual address space the VXLAN segments span and is defined by the server group (cluster) collections within the segments, which in turn contain a collection of distributed virtual switches (DVS) from ESX hosts within the clusters.

VM Tracer uses this information to build a network model. Communications with NSX-V requires a single polling thread that detects network connectivity and constantly updates the local data model.

The network topology of this configuration is displayed below.

Figure 2. VM Tracer Topology – Monitoring VXLAN Based Configurations

VM Tracer Configuration Procedures

The following sections describe the session configuration process, configuring the NSX-V connection for VXLAN based configurations, and the procedure for enabling VM Tracer on individual interfaces. The switch defines vmtracer configuration mode and VMtracer mode:

  • vmtracer configuration mode is a command mode for configuring VM Tracer monitoring sessions.
  • VMtracer mode is defines an interface state where discovery packets are sent to attached vSwitches.

Configuring vCenter Monitoring Sessions

A VM Tracer session connects the switch to a vCenter server for downloading data about VMs and vSwitches managed by ESX hosts connected to the switch’s ports. The switch supports four VM Tracer sessions.

The switch is placed in vmtracer configuration mode to edit session parameters, including the vCenter location and dynamic VLAN usage. Changes take effect by exiting vmtracer mode.

The vmtracer session command places the switch in vmtracer configuration mode for a specified session. The command either creates a new session or loads an existing session for editing.

  • This command enters vmtracer configuration mode for the system_1 session.
    switch(config)#vmtracer session system_1
    switch(vmtracer-system_1)#

In vmtracer configuration mode, the url (vmtracer mode), username (vmtracer mode), and password (vmtracer mode) commands specify the location and the account information that authenticates the switch. The URL parameter must reference a fully formed secure URL.

  • These commands specify the IANA url along with the username and password that allow the switch to access the location.
    switch(vmtracer-system_1)#url https://example.com/sdk
    switch(vmtracer-system_1)#username a-switch_01
    switch(vmtracer-system_1)#password abcde
    switch(vmtracer-system_1)#

Default session settings allow auto-segmentation, or the dynamic allocation and pruning of VLANs when a VM managed by the ESX host connected to the switch is created, deleted, or moved to a different host. The autovlan disable command prevents auto-segmentation, regardless of VM activity. The allowed-vlan command specifies the VLANs that may be added when a VM is added or moved. By default, all VLANs are allowed.

  • This command disables auto-segmentation.
    switch(vmtracer-system_1)#autovlan disable
    switch(vmtracer-system_1)#
  • These commands enable auto-segmentation and limit the list of allowed VLANs to VLAN 1-2000.
    switch(vmtracer-system_1)#no autovlan disable
    switch(vmtracer-system_1)#allow-vlan 1-2000
    switch(vmtracer-system_1)#

The exit command returns the switch to Global configuration mode and enables the VM Tracer session. Vmtracer configuration mode can be re-entered for this session to edit session parameters.

  • This command exits vmtracer configuration mode.
    switch(vmtracer-system_1)#exit
    switch(config)#

The no vmtracer session command disables the session and removes it from running-config.

  • This command disables and deletes the system_1 VM Tracer session.
    switch(config)#no vmtracer session system_1
    switch(config)#

Configuring vShield Monitoring Sessions

To monitor VXLAN based VMware configurations, the switch must communicate with a NSX for vSphere® (NSX-V). Vmtracer-vxlan configuration mode specifies the location and user account data that allows the switch to access a NSX-V within the configuration mode vmtracer session.

The switch is placed in vmtracer configuration mode to edit session parameters, including the vCenter location and dynamic VLAN usage. Changes take effect by exiting vmtracer mode.

The vxlan (vmtracer mode) command is executed from vmtracer mode for a specified session and places the switch in vmtracer-vxlan configuration mode for that session. Each VM Tracer session can be associated with one vShield instance.

  • These commands create the vShield instance for the VMTracer session named vnet-1.
    switch(config)#vmtracer session vnet-1
    switch(config-vmtracer-vnet-1)#vxlan
    switch(config-vmtracer-vnet-1-vxlan)#

In vmtracer-vxlan configuration mode, the url (vmtracer-vxlan mode), username (vmtracer-vxlan mode), and password (vmtracer-vxlan mode) commands specify the vShield server’s location and the account information that authenticates the switch to the vShield server. The url parameter must reference a fully formed secure url, such as https://vcshield.democorp.com/sdk.

  • These commands specify the vShield’s URL along with the username and password that allow the switch to access the vShield server.
    switch(config-vmtracer-vnet-1-vxlan)#url https://vshieldserver.company1.org/sdk
    switch(config-vmtracer-vnet-1-vxlan)#username a-shield_01
    switch(config-vmtracer-vnet-1-vxlan)#password home
    switch(config-vmtracer-vnet-1-vxlan)#

Enabling VMtracer Mode

VMtracer mode is an interface setting that enables interfaces to send discovery packets to the connected vSwitch. The vmtracer command enables VMtracer mode on the configuration mode interface.

  • These commands enable VMtracer mode on the Ethernet 3 interface.
    switch(config)#interface Ethernet3
    switch(config-if-Et3)#vmtracer vmware-esx
    switch(config-if-Et3)#

The no vmtracer command disables vmtracer mode on the configuration mode interface.

  • This command disables vmtracer mode on the Ethernet 3 interface.
    switch(config-if-Et3)#no vmtracer vmware-esx
    switch(config-if-Et3)#

Displaying VM Tracer Data

Displaying Session Status

The show vmtracer session command displays information about the specified session.

Without the detail parameter, the command displays connection parameters and status for the vCenter associated to the specified session.

  • This command displays connection parameters for the vCenter associated with the system_1 session.
    switch#show vmtracer session system_1
        vCenter URL https://vmware-vcenter1/sdk
        username arista
        password arista
        Session Status Disconnected

With the detail parameter, the command displays connection status and data concerning messages the vCenter previously received from ESX hosts connected to the switch.

  • This command displays connection parameters and message details for the vCenter associated with the system_1 session.
    switch#show vmtracer session system_1 detail
        vCenter URL https://vmware-vcenter1/sdk
        username arista
        sessionState Connected
        lastStateChange 19 days, 23:03:59 ago
        lastMsgSent CheckForUpdatesMsg
        timeOfLastMsg 19 days, 23:14:09 ago
        resonseTimeForLastMsg 0.0
        numSuccessfulMsg 43183
        lastSuccessfulMsg CheckForUpdatesMsg
        lastSuccessfulMsgTime 19 days, 23:14:19 ago
        numFailedMsg 1076
        lastFailedMsg CheckForUpdatesMsg
        lastFailedMsgTime 19 days, 23:14:09 ago
        lastErrorCode Error -1 fault: SOAP-ENV:Client [no subcode]
        "End of file or no input: Operation interrupted or timed out after 600s send 
    or     600s receive delay"
        Detail: [no detail]
        CheckForUpdates:

Displaying VM Interfaces

The show vmtracer interface command displays the VM interfaces (Vnics) that are active on switch interfaces where vmtracer mode is enabled. For each Vnic, the command displays the name of the attached VM, the adapter name, its VLAN, the VM power state, and the presence status of its MAC address in the switch's MAC table.

This command displays the Vnics connected to all VM Tracer-enabled interfaces.

switch#show vmtracer interface

Ethernet8 : example.com
    VM Name VM Adapter VLAN Status
    esx3.aristanetworks.com vmk0 0 Up/Down
    vspheremanagement Network adapter 1 0 Up/Down

Ethernet15 : example.om
    VM Name VM Adapter VLAN Status
    Openview Network adapter 1 123 Up/Down
    VmTracerVm Network adapter 1 123 Down/Down

Ethernet23 : example.com
    VM Name VM Adapter VLAN Status

Ethernet24 : example.com
    VM Name VM Adapter VLAN Status

Displaying VMs

The show vmtracer vm command displays VM interfaces (Vnics) accessible to the VM Tracer-enabled interfaces. For each active listed VM, the command displays its name, adapter, and the connected hypervisor.

  • This command displays the VMs connected to all VM Tracer-enabled interfaces.
    switch#show vmtracer vm
        VM Name VM Adapter Interface VLAN
        Openview Network adapter 1 Et15 123
        vspheremanagement Network adapter 1 Et8 0
        VmTracerVm Network adapter 1 Et15 123
        example.com vmk0 Et8 0
  • This command displays connection data for the VMs connected to all VM Tracer-enabled interfaces.
    switch#show vmtracer vm detail
    VM Name Openview
       intf : Et15
       vnic : Network adapter 1
       mac : 00:0c:29:ae:7e:90
       portgroup : dvPortGroup
       vlan : 123
       switch : vds
       host : example.com

VM Tracer Configuration Commands

allowed-vlan

The allowed-vlan command specifies the VLANs that may be added when a VM is added or moved from the hypervisor connected to the session specified by the vmtracer mode. By default, all VLANs are allowed.

Command Mode

Vmtracer Configuration

Command Syntax

allowed-vlan [VLAN_LIST]

no allowed-vlan

default allowed-vlan vlan

Parameters

  • VLAN_LIST     The VLAN list or the edit actions to the current VLAN list. Valid v_range formats include number, or number range.
    • v_range     The list consists of the v_range VLANs.
    • add v_range     The v_range VLANs are added to the current VLAN list.
    • all     The list consists of all VLANs (1-4094).
    • except v_range     The list consists of all VLANs except for those specified by v_range.
    • none     The list of VLANs is empty.
    • remove v_range     The v_range VLANs are removed from the current VLAN list.

Related Commands

Examples

  • This command sets the list of allowed VLANs to 1 through 2000.
    switch(vmtracer-system_1)#allow-vlan 1-2000
    switch(vmtracer-system_1)#
  • This command adds VLANs to 2501 through 3000.
    switch(vmtracer-system_1)#allow-vlan add 2051-3000
    switch(vmtracer-system_1)#

autovlan disable

Default VM Tracer session settings enable auto provisioning, which allows the dynamic assignment and pruning of VLANs when a VM attached to the ESX connected to the switch is created, deleted, or moved to a different ESX host. The autovlan setting controls auto provisioning.

The autovlan disable command disables auto provisioning, which prevents the creation or deletion of VLANs regardless of VM activity. The allowed-vlan command specifies the VLANs that may be added when a VM is added or moved. By default, all VLANs are allowed.

The no autovlan disable command enables the creation and deletion of VLANs caused by VM activity. This is the default setting.

Command Mode

Vmtracer Configuration

Command Syntax

autovlan disable

no autovlan disable

default autovlan disable

Related Commands

Example

  • This command disables dynamic VLAN creation or pruning within the configuration mode VM Tracer session.
    switch(vmtracer-system_1)#autovlan disable
    switch(vmtracer-system_1)#

password (vmtracer mode)

The password command specifies the token that authorizes the username to the vCenter associated with the VM Tracer mode session.

Command Mode

Vmtracer Configuration

Command Syntax

password [ENCRYPTION] [password]

Parameters

  • ENCRYPTION     encryption level of the password.
    • <no parameter>      password is a clear-text string.
    • the password is a clear-text string. Equivalent to <no parameter>.
    • the password is an encrypted string.
  • password     text that authenticates the username.
    • password is a clear-text string if ENCRYPTION specifies clear text.
    • password is an encrypted string if ENCRYPTION specifies an encrypted string.

Related Commands

Example

  • This command configures abode as the clear-text string that authorizes the username a-switch_01 located at example.com/sdk.
    switch(vmtracer-system_1)#url https://example.com/sdk
    switch(vmtracer-system_1)#username a-switch_01
    switch(vmtracer-system_1)#password abcde
    switch(vmtracer-system_1)#

password (vmtracer-vxlan mode)

The password command specifies the token that authorizes the username on the NSX for vSphere® (NSX-V) server located at the URL configured for the configuration mode VM Tracer. The switch uses this account to access NSX-V information.

The password statement is replaced in running-config for the configuration mode interface by a subsequent password command. The statement is removed by deleting the NSX-V instance through a no vxlan (vmtracer mode) command in vmtracer configuration mode.

Command Mode

Vmtracer-vxlan Configuration

Command Syntax

password [ENCRYPTION] password

Parameters

  • ENCRYPTION     encryption level of the password.
    • <no parameter>      password is a clear-text string.
    • 0     the password is a clear-text string. Equivalent to <no parameter>.
    • 7     the password is an encrypted string.
  • password     text that autorizes the username.
    • password is a clear-text string if ENCRYPTION specifies clear text.
    • password is an encrypted string if ENCRYPTION specifies an encrypted string.

Related Commands

Example

  • This command configures 5678 as the clear-text string that authorizes the username admin to the NSX-V located at https://example.com/sdk.
    switch(config)#vmtracer session vnet-1
    switch(config-vmtracer-vnet-1)#vxlan
    switch(config-vmtracer-vnet-1-vxlan)#url https://example.com/sdk
    switch(config-vmtracer-vnet-1-vxlan)#username admin
    switch(config-vmtracer-vnet-1-vxlan)#password 5678
    switch(config-vmtracer-vnet-1-vxlan)#exit
    switch(config-vmtracer-vnet-1)#show active
    vmtracer session vnet-1
     allowed-vlan 1-4094
     vxlan
    url https://example.com/sdk
    username admin
    password 7 s2Xq4GSBlYU=
    switch(config-vmtracer-vnet-1)#

show vmtracer all

The show vmtracer all command displays VM Tracer data for all switches with the vSphere scope.

Command Mode

EXEC

Command Syntax

show vmtracer all

Example

  • This command displays data for both switches in the vSphere scope.
    switch>show vmtracer all
    Switch : a109(10.10.30.109)
    Ethernet49 : 10.102.28.3/10G
     VM Name VM AdapterVLANStatusState
     ABCDNetwork adapter 2 nativeUp/-- --
    
    Switch : a164(10.10.30.(172.22.30.164)
    Ethernet49 : 10.102.28.3/10G Storage Network/dvUplink1
     VM Name VM AdapterVLANStatusState
     WXYZNetwork adapter 2 nativeUp/-- --
    switch>

show vmtracer interface

The show vmtracer interface command displays the VM interfaces (Vnics) that are active on the VM Tracer enabled interface. For each Vnic, the command displays the name of the attached VM, the adapter name, its VLAN, the VM power state, and the presence status of its MAC address in the switch's MAC table.

Command Mode

EXEC

Command Syntax

show vmtracer interface [INT_NAME][INFO_LEVEL]

Parameters

  • INT_NAME     the interfaces to be configured. Values include:
    • <no parameter>     command returns information for all interfaces.
    • ethernet e_range      Ethernet interface range.
    • port-channel p_range      Port Channel interface range.

Valid e_range and p_range formats include number, number range, or comma-delimited list of numbers and ranges.

  • INFO_LEVEL     specifies information that the command returns.
    • <no parameter>     connection parameters and status for VM associated to specified sessions.
    • detail      connection status and data concerning messages the VM.
    • host     name of the connected host.

Examples

  • This command displays the Vnics connected to all VM Tracer enabled interfaces.
    switch>show vmtracer interface
    
    Ethernet8 : example.com
        VM Name                     VM Adapter          VLAN     Status
        esx3.aristanetworks.com     vmk0                0        Up/Down
        vspheremanagement           Network adapter 1   0        Up/Down
    
    Ethernet15 : example.com
        VM Name                     VM Adapter          VLAN      Status
        Openview                    Network adapter 1   123       Up/Down
        VmTracerVm                  Network adapter 1   123       Down/Down
    
    Ethernet23 : example.com
        VM Name                     VM Adapter          VLAN       Status
    switch>
  • This command displays the Vnics connected to the Ethernet 8 interface.
    switch>show vmtracer interface Ethernet8
    
    Ethernet8 : example.com
        VM Name                     VM Adapter          VLAN      Status
        example.com                 vmk0                0         Up/Down
        vspheremanagement           Network adapter 1   0         Up/Down
    switch>

show vmtracer session vcenter

The show vmtracer session vcenter command displays vCenter information for a specified VM Tracer session.

Command Mode

EXEC

Command Syntax

show vmtracer session session_name vcenter [INFO_LEVEL]

Parameters

  • session_name     VM Tracer sessions for which the command returns information.
  • INFO_LEVEL     specifies information that the command returns.
    • <no parameter>      displays connection and status information for the specified vCenter.
    • detail      displays connection, status, and history information for the specified vCenter.

Examples

  • This command displays connection parameters for the vCenter associated to the abcde session.
    switch>show vmtracer session abcde vcenter
    
    Session abcde
    vCenter URL https://vmware-vcenter5.1/sdk
    usernameAdministrator
    autovlanenabled
    allowed-vlans 1-4094
    sessionStateConnected
    switch>
  • This command displays connection parameters and history details from the vCenter associated to the abcde session.
    switch>show vmtracer session abcde vcenter detail
    
    Sessionabcde
    vCenter URLhttps://vmware-vcenter5.1/sdk
    username Administrator
    autovlan enabled
    allowed-vlans1-4094
    SessionState Connected
    lastStateChange2:46:50 ago
    lastMsgSentQuery network hint message
    timeOfLastMsg0:00:20 ago
    responseTimeForLastMsg 0.000102301000479
    numSuccessfulMsg 998
    lastSuccessfulMsgQuery network hint message
    lastSuccessfulMsgTime0:00:20 ago
    numFailedMsg 0 
    lastFailedMsg-- 
    lastFailedMsgTimenever
    lastErrorCode--
    switch>

show vmtracer session vsm

The show vmtracer session vsm command displays NSX-V information for a specified VM Tracer session.

Command Mode

EXEC

Command Syntax

show vmtracer session session_name vsm [INFO_LEVEL]

Parameters

  • session_name     VM Tracer sessions for which the command returns information.
  • INFO_LEVEL     specifies information that the command returns.
    • <no parameter>      connection and status information for the specified NSX-V.
    • detail      connection, status, and history information for the specified NSX-V.

Examples

  • This command displays connection parameters for the NSX-V associated to the abcde session.
    switch>show vmtracer session abcde vsm
    
    Session abcde
    VShield URL https://example.com/sdk
    usernameadmin
    sessionStateConnected
    switch>
  • This command displays connection parameters and history details from the vShield Manager associated to the abcde session.
    switch>show vmtracer session abcde vsm detail
    
    Sessionabcde
    VShield URLhttps://vmware-vshield5.1/
    username admin
    SessionState Connected
    LaststateChange19 days, 23:14:19 ago
    LastMsgSent/api/2.0/vdn/scopes
    timeOfLastMsg1 days, 13:22:09 ago
    responseTimeForLastMsg 0.3 sec
    numSuccessfulMsg 3649
    lastSuccessfulMsg/api/2.0/vdn/scopes
    lastSuccessfulMsgTime0:00:00 ago
    numFailedMsg 1
    lastFailedMsg/api/2.0/vdn/config/segments
    lastFailedMsgTime10 days, 1:15:29 ago
    lastErrorCodeCURLE_COULDNT_RESOLVE_HOST - Couldn't resolve host
     The given remote host was not resolved.
    switch>

show vmtracer session

The show vmtracer session command displays vCenter and vShield connection information for a specified VM Tracer session.

Command Mode

EXEC

Command Syntax

show vmtracer session [SESSION_LIST]

Parameters

  • SESSION_LIST     VM Tracer sessions for which the command returns information.
    • <no parameter>     all configured VM Tracer sessions.
    • session_name     name of one VM Tracer session.

Examples

  • This command displays connection parameters associated to the abcde session.
    switch>show vmtracer session abcde
    Session abcde
    vCenter URL https://example.com/sdk 
    usernameAdministrator 
    autovlanenabled 
    allowed-vlans 1-4094 
    sessionStateConnected 
    VShield URL https:/vmware-vshield5.1.xyz.abcde.com 
    usernameadmin 
    sessionStateConnected
    
    switch>

show vmtracer vm detail

The show vmtracer vm detail command displays connection data for VMs interfaces (Vnics) that are accessible to VM Tracer enabled interfaces.

Command Mode

EXEC

Command Syntax

show vmtracer vm [VM_LIST] detail

Parameters

  • VM_LIST     The virtual machines for which the command displays information. Options include:
    • <no parameter>     command returns information for all present VMs.
    • vm_name     command returns information only for specified VM.

Examples

  • This command displays connection data for the VMs connected to all VM Tracer enabled interfaces.
    switch#show vmtracer vm vmcenter1
    VM NamevCenter1 Server App
    Interface : Po45
    vNIC: Network adapter 1
    MAC : 00:31:22:8e:b8:41
    Portgroup : VM Network
    VLAN: native
    Switch: Switch2
    Status: Down/Down
    Host: 10.22.18.28
    Data Center : vcenter-5
    switch>
  • This command displays connection data for the VMs connected to all VM Tracer enabled interfaces.
    switch>show vmtracer vm detail
    VM NamevCenter1 Server App
    Interface : Po45
    vNIC: Network adapter 1
    MAC : 00:31:22:8e:b8:41
    Portgroup : VM Network
    VLAN: native
    Switch: Switch2
    Status: Down/Down
    Host: 10.22.18.28
    Data Center : vcenter-5
    
    VM NamevCenter2 Server App
    Interface : Po45
    vNIC: vmk0
    MAC : 00:33:23:3c:e1:4e
    Portgroup : Management Network
    VLAN: native
    
    switch>

show vmtracer vm

The show vmtracer vm command displays VMs interfaces (Vnics) that are accessible to VM Tracer enabled interfaces. For each active VM, the command displays the name of the VM, its adapter, and the hypervisor to which it connects.

Command Mode

EXEC

Command Syntax

show vmtracer [INT_NAME] vm [VM_LIST]

Parameters

  • INT_NAME     the interfaces name Values include:
    • <no parameter>     command returns information for all interfaces.
    • interface ethernet e_range      Ethernet interface range.
    • interface port-channel p_range      Port Channel interface range.

    Valid e_range and p_range formats include a number, number range, or comma-delimited list of numbers and ranges.

  • VM_LIST     The virtual machines for which the command displays information. Options include:
    • <no parameter>     command returns information for all present VMs.
    • vm_name     command returns information only for specified VM.

Related Commands

Examples

  • This command displays the VMs connected to all VM Tracer enabled interfaces.
    switch>show vmtracer vm
    VM Name Esx HostInterfaceVLAN Status
    
    vCenter1172.22.28.8 Po45 native Down/Down
    vCenter2172.22.28.8 Po45 native Up/Up
    vCenter3172.22.28.8 Po45 11 Down/Down
    vCenter4172.22.28.8 Po45 native Down/Down
    VMKernelPo43 native Up/Up
    demo vcenter 5 clonePo43 native Up/Up
    switch>

show vmtracer vnic counters

The show vmtracer interface vnic counters command displays input and output packet counts for VM interfaces (Vnics) that are active on the specified interface or VM.

Command Mode

EXEC

Command Syntax

show vmtracer [ENTITY] vnic counters

Parameters

  • ENTITY     the virtual machine or interface over which statistics are gathered and displayed.
    • <no parameter>     command returns information for all active VMs.
    • interface ethernet e_range      Ethernet interface range.
    • interface port-channel p_range      Port Channel interface range.
    • vm vm_name     command returns information for specified VM.

    Valid e_range and p_range formats include a number, number range, or comma-delimited list of numbers and ranges.

Examples

  • This command displays the Vnics connected to Ethernet interface 24.
    switch>show vmtracer interface ethernet 24 vnic counters
    Physical Intf: Ethernet24
    Host: 10.17.28.8/site1/dvUplink1
    VM NamevNicInput Pkt/Byte/% Output Pkt/Byte/%
    vCenter1 Network adapter 2 2550/ 187175/0.6 6/360/0.0
    vCenter2 Network adapter 2 418615/ 30678024/ 99.4 1904439/ 1145654613/100.0
    Summary421165/ 30865199/100.0 1904445/ 1145654973/100.0
    switch>

show vmtracer vxlan segment

The show vmtracer vxlan segment command displays information about the VXLAN segments that are managed by the connected NSX for vSphere® (NSX-V).

Command Mode

EXEC

Command Syntax

show vmtracer segment ENTITY

Parameters

  • ENTITY     specifies the information that the command displays. Options include:
    • <no parameter>     displays information for VXLAN segments.
    • pool     displays resource pools available to segments.
    • pool pool_name      displays connection information about the specified pool.
    • range      displays the VNI range of the managed segments.

Examples

  • This command displays the VXLAN segments managed by the NSX-V.
    switch>show vmtracer vxlan segment
    Name VNI Multicast IP Network Scope 
    ------------------------------------------------------------ 
    Eng Wire 5002237.0.0.1abcde
    HR Wire5000237.0.0.2abcde
    
    switch>
  • This command displays the resource pools available to the VXLANs.
    switch>show vmtracer vxlan segment pool
    NameDescription Segments 
    ------------------------------------------------------------------------ 
    abcde Spans Cluster 1 and Cluster 2 Eng Wire, HR Wire 
    
    switch>
  • This command displays connection and packet information for the abcde pool.
    switch>show vmtracer vxlan segment pool abcde
    Name:          abcde
    Description: Spans Cluster 1 and Cluster 2 
    Segments:Eng Wire, HR Wire 
    
    Vxlan SegmentCluster Host VTEP IP DVS VLANMTU
    Eng Wire Cluster2test2.example.com    10.168.200.1/24dvs-test2200 1600
    Eng Wire Cluster1  test2.example.com    10.168.100.1/24dvs-test1100 1600
    HR WireCluster1  test2.example.com    10.168.100.1/24dvs-test1100 1600
    HR WireCluster2  test2.example.com    10.168.200.1/24dvs-test2200 1600
    switch>
  • This command displays the VNI range of the VXLAN segments.
    switch>show vmtracer vxlan segment range
    
    VNI RangeMulticast IP Range
    --------------------------------------------
    5000 - 5024237.0.0.1 - 237.0.0.117 
    
    Name VNI Multicast IP Network Scope
    ----------------------------------------------------------- 
    HR Wire5002237.0.0.1abcde
    
    Eng Wire 5000237.0.0.2abcde
    switch>

show vmtracer vxlan vm

The show vmtracer vxlan vm command displays the VXLAN segments, their VTEP IP numbers, and their VM endpoints that are managed by the connected NSX for vSphere® (NSX-V).

Command Mode

EXEC

Command Syntax

show vmtracer vxlan vm

Examples

  • This command displays the VM endpoints of the VXLAN segments managed by the NSX-V.
    switch>show vmtracer vxlan vm
    Vxlan Segment VTEP IPVLANVMs
    Eng Wire192.168.200.1/24 200 Eng VM3, Eng VM2
    Eng Wire192.168.100.1/24 100 Eng VM1
    HR Wire 192.168.100.1/24 100 HR VM2, HR VM1
    HR Wire 192.168.200.1/24 200 --
    switch>

source-interface

The source-interface command allows you to connect to a remote vCenter endpoint by using the primary address of the interface as the source IP address. If the interface is not specified, the source IP address is determined by the routing table.

The no source-interface and default source-interface commands restore default behavior by removing the source-interface command from the running-config.

Command Mode

Vmtracer Configuration

Command Syntax

source-interface [INTERFACE_NAME]

no source-interface

default source-interface

Parameters

  • INTERFACE_NAME     specifies the interface for which the information is displayed. Options include:
    • Ethernet e_num     specifies the Ethernet interface number.
    • Loopback l_num     specifies the loopback interface number. Value ranges from 0 to 2100.
    • Management m_num     specifies the management interface number. The values are 1 or 2.
    • Port-Channel {lag_num | lag_num.sub_num}     specifies the port-channel interface number. Value of interface ranges from 1 to 2000. Value of sub-interface ranges from 1 to 4094.
    • Tunnel tunnel_num     specifies the tunnel interface number. Value ranges from 1 to 255.
    • UnconnectedEthernet port_num     specifies the unconnected Ethernet port number. Value ranges from 1 to 8.
    • VLAN vlan_num     specifies the VLAN interface number. Value ranges from 1 to 4094.

Related Commands

Examples

  • This command configures VM Tracer to use Ethernet interface 17 to derive the source address for session packets.
    switch(config)#vmtracer session system_1
    switch(config-vmtracer-session-system_1)#source-interface Ethernet 17
    switch(config-vmtracer-session-system_1)#
  • This command configures a loopback interface 0 for VM Tracer session.
    switch(config)#vmtracer session system_1
    switch(config-vmtracer-session-system_1)#source-interface Loopback 0
    switch(config-vmtracer-session-system_1)#
  • This command configures management interface 1 for VM Tracer session.
    switch(config)#vmtracer session system_1
    switch(config-vmtracer-session-system_1)#source-interface management 1
    switch(config-vmtracer-session-system_1)#
  • This command configures port-channel interface 10 for VM Tracer session.
    switch(config)#vmtracer session system_1
    switch(config-vmtracer-session-system_1)#source-interface port-channel 10
    switch(config-vmtracer-session-system_1)#
  • This command configures tunnel interface 25 for VM Tracer session.
    switch(config)#vmtracer session system_1
    switch(config-vmtracer-session-system_1)#source-interface tunnel 25
    switch(config-vmtracer-session-system_1)#
  • This command configures unconnected Ethernet interface 1 for VM Tracer session.
    switch(config)#vmtracer session system_1
    switch(config-vmtracer-session-system_1)#source-interface unconnected Ethernet 1
    switch(config-vmtracer-session-system_1)#
  • This command configures VLAN interface 25 for VM Tracer session.
    switch(config)#vmtracer session system_1
    switch(config-vmtracer-session-system_1)#source-interface vlan 25
    switch(config-vmtracer-session-system_1)#

url (vmtracer mode)

The url command specifies the vCenter server location that is monitored by the session being edited by the current vmtracer mode. The command must reference a fully formed secure url.

Command Mode

Vmtracer Configuration

Command Syntax

url url_name

Parameters

  • url_name     location of the vCenter server. Valid formats include IP address (dotted decimal notation) and fully qualified domain name.

Related Commands

Example

  • This command specifies the location of the vCenter monitored by the system_1 VM Tracer session.
    switch(vmtracer-system_1)#url https://example.com/sdk
    switch(vmtracer-system_1)#

url (vmtracer-vxlan mode)

The url command specifies the NSX for vSphere® (NSX-V) server location that is monitored for VXLAN information by the configuration mode VM Tracer session. The command must reference a fully formed secure URL.

The url statement is replaced in running-config for the configuration mode session by a subsequent url command. The statement is removed by deleting the NSX-V instance through a no vxlan (vmtracer mode) command in vmtracer configuration mode.

Command Mode

Vmtracer-vxlan Configuration

Command Syntax

url url_name

Parameters

  • url_name     location of the NSX-V server. Valid formats include IP address (dotted decimal notation) and fully qualified domain name.

Related Commands

Example

  • This command configures the location of the NSX-V monitored by the vnet-1 VM Tracer session.
    switch(config)#vmtracer session vnet-1
    switch(config-vmtracer-vnet-1)#vxlan
    switch(config-vmtracer-vnet-1-vxlan)#url https://example.com/sdk
    switch(config-vmtracer-vnet-1-vxlan)#exit
    switch(config-vmtracer-vnet-1)#show active
    vmtracer session vnet-1
     allowed-vlan 1-4094
     vxlan
    url https://example.com/sdk
    switch(config-vmtracer-vnet-1)#

username (vmtracer mode)

The username command identifies the switch’s account name on the vCenter server. The switch uses this user name to access vCenter information.

Command Mode

Vmtracer Configuration

Command Syntax

username name_string

Parameters

  • name_string     vCenter account user name. Parameter must match the user name configured on the vCenter.

Related Commands

Example

  • This command configures the user name for the vCenter associated with the system_1 session. The session uses this user name to log into the vCenter server.
    switch(vmtracer-system_1)#username a-switch_01
    switch(vmtracer-system_1)#

username (vmtracer-vxlan mode)

The username command identifies the switch’s account name on the NSX for vSphere® (NSX-V) server located at the URL configured for the configuration mode VM Tracer. The switch uses this user name to access NSX-V information.

The username statement is replaced in running-config for the configuration mode interface by a subsequent username command. The statement is removed by deleting the NSX-V instance through a no vxlan (vmtracer mode) command in vmtracer configuration mode.

Command Mode

Vmtracer-vxlan Configuration

Command Syntax

username name_string

Parameters

  • name_string     NSX-V account user name. Parameter must match a user name configured on the NSX-V.
Related Commands

Example

  • This command configures the user name of admin for the NSX-V located at the URL specified by the URL command.
    switch(config)#vmtracer session vnet-1
    switch(config-vmtracer-vnet-1)#vxlan
    switch(config-vmtracer-vnet-1-vxlan)#url https://example.com/sdk
    switch(config-vmtracer-vnet-1-vxlan)#username admin
    switch(config-vmtracer-vnet-1-vxlan)#exit
    switch(config-vmtracer-vnet-1)#show active
    vmtracer session vnet-1
     allowed-vlan 1-4094
     vxlan
    url https://example.com/sdk
    username admin
    switch(config-vmtracer-vnet-1)#

vmtracer session

The vmtracer session command places the switch in vmtracer mode for the specified session. The command creates a new session or loads an existing session for editing.

A VM Tracer session connects the switch to a vCenter server at a specified location, then downloads data about VMs and vSwitches managed by ESX hosts connected to switch ports. The switch supports a maximum of four VM Tracer sessions.

VM Tracer session parameters are configured in vmtracer mode. Parameters configured in vmtracer mode include the vCenter location and dynamic VLAN usage.

The no vmtracer session and default vmtracer session commands disable the session and remove its configuration from running-config.

Command Mode

Global Configuration

Command Syntax

vmtracer session name

no vmtracer session name

default vmtracer session name

Parameters

  • name     The label assigned to the VM Tracer session.

Commands Available in vmtracer Configuration Mode

Examples

  • This command enters vmtracer mode for the system_1 session.
    switch(config)#vmtracer session system_1
    switch(vmtracer-system_1)#
  • This command disables the system_1 VM Tracer session. The system_1 session and all of its parameters are removed from running-config.
    switch(config)#no vmtracer session system_1 
    switch(config)#

vmtracer

The vmtracer command enables vmtracer mode on the configuration mode interface. Interfaces with vmtracer mode enabled send discovery packets to the connected vSwitch.

The no vmtracer and default vmtracer commands disable vmtracer mode on the configuration mode interface by removing the corresponding vmtracer command from running-config.

Command Mode

Interface-Ethernet Configuration Interface-Port-channel Configuration

Command Syntax

vmtracer HOST_TYPE

no vmtracer HOST_TYPE

default vmtracer HOST_TYPE

Parameters

  • HOST_TYPE     the type of hypervisor that controls the vSwitch to which the interface connects.
    • vmware-esx     ESX or ESXI hypervisor (VMware).

Examples

  • These commands enable vmtracer mode on the Ethernet 3 interface.
    switch(config)#interface Ethernet 3
    switch(config-if-Et3)#vmtracer vmware-esx 
    switch(config-if-Et3)#
  • This command disables vmtracer mode on the Ethernet 3 interface.
    switch(config-if-Et3)#no vmtracer vmware-esx 
    switch(config-if-Et3)#

vrf (vmtracer mode)

The vrf command allows the switch to communicate with a vCenter server by enabling VmTracer configuration mode. By default, VmTracer is enabled only in the default vrf command.

Command Mode

Vmtracer Configuration

Command Syntax

vrf vrf_name

Parameters

  • vrf_name     specifies information of the corresponding VRF.

Example

  • These commands place the VRF vrf1 in the Vmtracer configuration mode.
    switch(config)#vmtracer session system_1
    switch(config-vmtracer-session-system_1)#vrf vrf1
    switch(config-vmtracer-session-system_1)#

vxlan (vmtracer mode)

The vxlan command places the switch in vmtracer-vxlan configuration mode. To monitor VXLAN based VMware configurations, the switch must communicate with a NSX for vSphere® (NSX-V). Vmtracer-vxlan configuration mode specifies the location and user account data that allows the switch to access a NSX-V within the configuration mode vmtracer session. Each VM Tracer session can be associated with one NSX-V instance.

The no vxlan and default interface vxlan commands delete the NSX-V instance from the configuration mode vmtracer session by removing all vmtracer-vxlan mode commands from running-config.

Command Mode

Vmtracer Configuration

Command Syntax

vxlan

no vxlan

default vxlan

Related Commands

Commands Available in vmtracer-vxlan Configuration Mode

Example

  • These commands create the vShield instance for the VMTracer session named vnet-1.
    switch(config)#vmtracer session vnet-1
    switch(config-vmtracer-vnet-1)#vxlan
    switch(config-vmtracer-vnet-1-vxlan)#
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