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Implementing Cisco Application Centric Infrastructure
– Advanced
http://killexams.com/pass4sure/exam-detail/600-660
When a TCN BPDU is received in a VLAN, Cisco ACI flushes the endpoints for the associated encapsulation.
STP BPDUs are dropped due to MCP.
MST BPDUs are flooded correctly in Cisco ACI fabric without additional configuration.
BPDU filter and BPDU guard can be configured on Cisco ACI leaf edge ports.
Cisco ACI must be configured as the STP root for all VLANs.
in the bridge domain VLAN
in the native VLAN ID
in the access encapsulation VLAN part of different VLAN pools
in the VNID that is assigned to the FD VLAN
Refer to the exhibit. How are the STP BPDUs forwarded over Cisco ACI fabric?
STP BPDUs that are generated by Switch2 are received by Switch1 and Switch3.
Cisco ACI fabric drops all STP BPDUs that are generated by the external switches.
Cisco ACI acts as the STP root for all three external switches.
STP BPDUs that are generated by Switch1 are received only by Switch3.
Reference: https://www.linkedin.com/pulse/cisco-aci-network-behaviour-stptcn-how-identify-loop-ankit-kulshresta
A Cisco ACI leaf flushes all local endpoints in the received EPG when an MSTP TCN frame is received.
A static path binding is required for native VLAN to carry the MST BPDUs in existing EPGs.
Mis-cabling protocol is used to snoop the MSTP TCN packets.
A dedicated EPG must be created for the native VLAN ID with static bindings toward the MSTP-enabled switches.
The PVST simulation must be configured on external network switches to support MSTP.
Cisco ACI fabric is migrated from network-centric mode to application-centric mode. What is possible in an application-centric design?
remapping of VLAN pools
migration of bare metal servers to virtual machines
creation of additional EPGs under one bridge domain
Cisco ACI VMM integration with hypervisors
Multiple VLANs and/or multiple EPGs are under one bridge domain
VLAN numbers are in the names of the bridge domain and EPG objects
One EPG is mapped to multiple bridge domains
One VLAN equals one EPG equals one bridge domain
There is open communication between EPGs
EPGs are used for microsegmentation
EPGs are different security zones
Applications define the network requirements
A bridge domain has one subnet and one EPG
DRAG DROP
An engineer must migrate servers from a legacy data center infrastructure to a Cisco ACI fabric. Drag and drop the steps from the left into the order that they must be completed on the right to ensure the least amount of downtime.
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