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VMware SD-WAN Troubleshoot Question and Answers

VMware SD-WAN Troubleshoot

Last Update Oct 16, 2024
Total Questions : 36

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Questions 1

Scenario 2:

After completing the branch activation activities for all required branches, the network administrator attempts to test connectivity between the various branches and between the hubs and branches. The administrator notices a lack of connectivity despite being certain that configurations have been complete. The administrator also observed that several users are reporting intermittent connectivity to some of the applications they are accessing. Other users are reporting no access to these applications. Other users at some of the branches claim they cannot get to certain public resources. The administrator wants to ensure that all sites can talk to each other and all resources are accessible.

Exhibit.

Users at the London site are complaining of various intermittent issues around websites not loading, or applications being remotely accessed disconnecting sporadically and reconnecting after a few minutes. The network administrator does not see anything strange on the Edge overview page and decides to check if the CPU or memory have been hitting close to 100°/o.

Where should the administrator verify this information?

Options:

A.  

In the VCO > Test 8c Troubleshoot > Remote Diagnostics > System Status

B.  

In the VCO > Monitor > Click London_Site01 > Click the System Tab

C.  

In the VCO > Remote Troubleshooting > Remote Actions > System Status

D.  

In the VCO > Monitor > Alerts

Discussion 0
Questions 2

Scenario 3:

After resolving numerous connectivity issues throughout the various branch sites, connectivity between applications and users is finally present. The network administrator is informed that during certain tests, applications are not performing as they are expected to. Users report that call quality has not fully improved and that some of their calls either drop or have poor voice quality where the conversation is breaking up. Other users are noticing that file transfers are slower than expect. A group of users from a few sites have reported slowness in accessing internal and external applications.

Exhibit.

A network engineer is configuring an Internet Backhaul Policy for the Chicago Branch to utilize NY's hub as a much better source for Internet for certain SaaS applications. For an unknown reason, the network engineer is not able to select the hubs in the Internet Backhaul Policy.

What could be the reason?

Options:

A.  

The Dynamic Branch to Branch has not been enabled.

B.  

The hub is not configured with the proper IP address.

C.  

Dynamic Branch to Branch using gateways has not been enabled.

D.  

The Edge's profile does not include Backhaul hubs as an option.

Discussion 0
Questions 3

Scenario 3:

After resolving numerous connectivity issues throughout the various branch sites, connectivity between applications and users is finally present. The network administrator is informed that during certain tests, applications are not performing as they are expected to. Users report that call quality has not fully improved and that some of their calls either drop or have poor voice quality where the conversation is breaking up. Other users are noticing that file transfers are slower than expect. A group of users from a few sites have reported slowness in accessing internal and external applications.

Exhibit.

Users at the Dallas Branch are complaining that downloads/uploads from Office365 are slow. Working in Teams has been providing slow responses. The Internet circuit is 100Mbps while the MPLS Circuit is 45Mbps. Upon troubleshooting, the network administrator has noticed the traffic is Backhauling through the Seattle hub for all internet traffic.

How should the network administrator resolve the issue?

Options:

A.  

Leave the system as is, the gateways will resolve the issues after doing 15 minutes of link qualification.

B.  

Advertise public routes to Office365 and Teams through the New York Hub.

C.  

Leave the system as is, the hubs will auto-rebalance tunnels after doing 15 minutes of link qualification.

D.  

Prevent the hub from advertising a default route.

Discussion 0
Questions 4

Scenario 2:

After completing the branch activation activities for all required branches, the network administrator attempts to test connectivity between the various branches and between the hubs and branches. The administrator notices a lack of connectivity despite being certain that configurations have been complete. The administrator also observed that several users are reporting intermittent connectivity to some of the applications they are accessing. Other users are reporting no access to these applications. Other users at some of the branches claim they cannot get to certain public resources. The administrator wants to ensure that all sites can talk to each other and all resources are accessible.

Exhibit.

Where can the network administrator check to see what routes are present on the London-site Edge?

Options:

A.  

Log into the VCO > Configuration > Overlay Flow Control

B.  

Log into the VCO > Test & Troubleshoot > Remote Diagnostics > Run "List Paths"

C.  

Log into the VCO > Test & Troubleshoot > Remote Diagnostics > Run "Route Table Dump"

D.  

Log into the VCO > Monitoring > Overlay Flow Control

Discussion 0
Questions 5

Scenario 2:

After resolving numerous connectivity Issues throughout the various branch sites, connectivity between applications and users is finally present. The network administrator is informed that during certain tests, applications are not performing as they are expected to. Users report that call quality has not fully improved and that some of their calls either drop or have poor voice quality where the conversation is breaking up. Other users are noticing that file transfers are slower than expect. A group of users from a few sites have reported slowness in accessing internal and external applications.

Exhibit.

A network administrator has configured a Business Policy to send a specific application directly out an underlay interface. Users have complained of slow responses for that application. While troubleshooting, the network administrator finds the traffic is actually taking an overlay path to another SD-WAN Edge.

What is causing this behavior?

Options:

A.  

The other Edge location is advertising a secure route for the application's subnet.

B.  

uI has been configured forcing traffic into the underlay towards the hub.

C.  

Configuring Business Policy Direct settings have no affect on traffic flows.

D.  

Internet Backha.

E.  

The underlay path is not available forcing traffic into the overlay.

Discussion 0
Questions 6

Scenario 2:

After completing the branch activation activities for all required branches, the network administrator attempts to test connectivity between the various branches and between the hubs and branches. The administrator notices a lack of connectivity despite being certain that configurations have been complete. The administrator also observed that several users are reporting intermittent connectivity to some of the applications they are accessing. Other users are reporting no access to these applications. Other users at some of the branches claim they cannot get to certain public resources. The administrator wants to ensure that all sites can talk to each other and all resources are accessible.

Exhibit.

A network administrator has received an email from the applications development team requesting connectivity to their AWS VPC.

The administrator has configured the tunnel via the VMware SD-WAN Gateway. The tunnel status icon has not turned green.

Where are two places the administrator must check? (Choose two.)

Options:

A.  

Determine if the DH parameter on the Edge has been configured.

B.  

Determine if the PSK is mismatched between the AWS side and the VeloCloud Edge.

C.  

Determine if the NVS has been enabled and assigned to a profile.

D.  

Determine if the PSK is mismatched between the AWS side and the VeloCloud Gateway.

Discussion 0
Questions 7

Scenario 3:

After resolving numerous connectivity issues throughout the various branch sites, connectivity between applications and users is finally present. The network administrator is informed that during certain tests, applications are not performing as they are expected to. Users report that call quality has not fully improved and that some of their calls either drop or have poor voice quality where the conversation is breaking up. Other users are noticing that file transfers are slower than expect. A group of users from a few sites have reported slowness in accessing internal and external applications.

Exhibit.

A network administrator wants to achieve better high-availability and network reconvergence between LAN-side BGP Networks and the hub Edges in New York.

What must the administrator do?

Options:

A.  

Modify the Keep Alive and Hold timers to the lowest possible values ensuring the Hold timer is 3 times more than the Keep Alive timer.

B.  

Nothing, the system will auto-rebalance connections and will provide sub-second convergence.

C.  

Modify the Connect and Hold timers to the lowest possible values ensuring the Hold timer is 3 times more than the Connect timer.

D.  

Modify the Keep Alive and Hold timers to the lowest possible values ensuring the Keep Alive timer is 3 times more than the Hold timer.

Discussion 0
Questions 8

Scenario 2:

After completing the branch activation activities for all required branches, the administrator attempts to test connectivity between the various branches and between the hubs and branches- The administrator notices a lack of connectivity despite being certain that configurations have been complete. The administrator also observed that several users are reporting intermittent connectivity to some of the applications they are accessing. Other users are reporting no access to these applications. Other users at some of the branches claim they cannot get to certain public resources. The administrator wants to ensure that all sites can talk to each other and all resources are accessible.

Exhibit.

The tunnel from the Dallas site to the Seattle hub is not coming up.

What are two things that should be checked to determine the issue? (Choose two.)

Options:

A.  

Hub WAN Interface might be behind a firewall.

B.  

Spoke Edge and Hub Edge have a mismatched certificate.

C.  

Dynamic Branch to Branch is not enabled.

D.  

Spoke Edge and Hub Edge are two different Edge models.

Discussion 0
Questions 9

Scenario 3:

After resolving numerous connectivity Issues throughout the various branch sites, connectivity between applications and users is finally present. The network administrator is informed that during certain tests, applications are not performing as they are expected to. Users report that call quality has not fully improved and that some of their calls either drop or have poor voice quality where the conversation is breaking up. Other users are noticing that file transfers are slower than expect. A group of users from a few sites have reported slowness in accessing internal and external applications.

Exhibit.

The network administrator has been made aware that Chicago is receiving traffic from non-SD-WAN sites, bottlenecking Chicago's interfaces. The network administrator's VMware SE has mentioned using the uplink feature to help resolve this.

What are two ways the uplink feature should be used in this scenario? (Choose two.)

Options:

A.  

Set the uplink community to forward traffic to a group of neighbors.

B.  

Direct all traffic to that neighbor designated as an uplink,

C.  

Stop mutual redistribution of routes from underlay and overlay.

D.  

Prevent the site in question from becoming a transit site.

Discussion 0
Questions 10

Scenario 3:

After resolving numerous connectivity issues throughout the various branch sites, connectivity between applications and users is finally present. The network administrator is informed that during certain tests, applications are not performing as they are expected to. Users report that call quality has not fully improved and that some of their calls either drop or have poor voice quality where the conversation is breaking up. Other users are noticing that file transfers are slower than expect. A group of users from a few sites have reported slowness in accessing internal and external applications.

Users at multiple branches complain that a highly performant SQL Database cluster residing at the New York Data Center is not responding to database queries or inserts as expected. It is affecting the order management site. A network administrator investigates and finds that traffic from the branches are going through Seattle to reach the SQL Cluster in New York. The design for this SD-WAN network does not call for routing security.

The SQL Cluster is reachable through either Data Center, but for performance reasons, must flow through the New York DC. The network administrator has verified that the routes are not present in the OFC and the BGP neighborship is down in Network Services.

Refer to the Exhibit(s).

Exhibit.

What should the administrator verify?

Options:

A.  

The BGP configuration has a filter in place to deny the prefix in New York.

B.  

The BGP Authentication matches on both sides.

C.  

The BGP configuration has a filter in place to deny the prefix in Seattle.

D.  

Backhauling through the Seattle DC is disabled.

Discussion 0