Cisco Exam 300-620 Topic 4 Question 97 Discussion

The engineer configures port 1/2 on Leaf-101 and Leaf-102 to connect to a new server (SVR-12), which belongs to EPG-12 using VLAN-1212 encapsulation. The server is configured as a vPC member port and statically bound to EPG-12. The task is to ensure connectivity, indicating a missing configuration step.

Requirement Analysis

Static binding of a vPC member port to an EPG requires proper VLAN association and domain mapping.

vPC ensures redundancy, and the VLAN (1212) must be allocated and associated with the EPG via a domain (e.g., VMM or physical domain).

Option Evaluation

A . Create a VPC Explicit Protection Group for EPG-12 and VLAN-1212:

vPC Explicit Protection Groups are used for specific vPC configurations, but this is not a standard requirement for EPG binding and VLAN association.

B . Associate a domain with EPG-12 that is associated with VLAN-1212:

Associating a domain (e.g., VMM or physical domain) with EPG-12 and mapping VLAN-1212 ensures the VLAN is allocated and recognized by the fabric for the vPC ports. This is a critical step for static binding to work.

C . Select VLAN-1212 on the EPG-12 Interface Policy Group:

The Interface Policy Group defines port settings, but VLAN selection is managed via the domain association, not the policy group alone. This is insufficient.

D . Configure an LACP Interface Policy and apply it to EPG-12:

LACP is optional for vPC and not required for static EPG binding. The issue is VLAN/domain association, not link aggregation.

Final Answer Justification

B is correct because associating a domain with EPG-12 and VLAN-1212 ensures the fabric recognizes the VLAN encapsulation and applies the EPG configuration to the vPC ports.

Primary Cisco Reference:

Cisco APIC vPC Deployment Guide.

Cisco ACI EPG and Domain Configuration Guide.