Methods for Cisco Nexus 1000V VEM and VSM Communication
Question
Which two methods can be used in communications between the Cisco Nexus 1000V VEM and the VSM? (Choose two.)
Answers
Explanations
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A. B. C. D. E. F. G.BD.
The Cisco Nexus 1000V is a virtual switch that runs as a software module (Virtual Ethernet Module or VEM) on each virtualized host and is controlled by a centralized management module called Virtual Supervisor Module (VSM).
To allow communication between the VEM and VSM, the following methods can be used:
A. Routed TCP traffic using HTTPS: This method allows the VEM to communicate with the VSM using TCP traffic over HTTPS protocol. This method provides secure communication between the VEM and VSM.
B. Routed UDP traffic using port 4785: This method allows the VEM to communicate with the VSM using UDP traffic over port 4785. This method is often used for VXLAN traffic, as this port is the default port for VXLAN.
C. Routed UDP traffic using port 7845: This method allows the VEM to communicate with the VSM using UDP traffic over port 7845. This port is used for Cisco's Virtual Security Gateway (VSG) product.
D. Layer 2 direct traffic using MAC addresses: This method allows the VEM to communicate with the VSM directly using layer 2 traffic with MAC addresses. This method is only used when layer 3 communication between the VEM and VSM is not possible.
E. Layer 2 broadcast traffic: This method allows the VEM to communicate with the VSM using layer 2 broadcast traffic. This method is only used when layer 3 communication between the VEM and VSM is not possible.
F. Routed TCP traffic using port 4785: This method allows the VEM to communicate with the VSM using TCP traffic over port 4785. This method is often used for VXLAN traffic, as this port can be configured as an alternate port for VXLAN.
G. Routed TCP traffic using port 7845: This method allows the VEM to communicate with the VSM using TCP traffic over port 7845. This port is used for Cisco's Virtual Security Gateway (VSG) product.
In summary, options A and B are the two methods that can be used in communications between the Cisco Nexus 1000V VEM and the VSM. Option A uses HTTPS protocol, which provides secure communication, and option B uses UDP traffic over port 4785, which is often used for VXLAN traffic.
