CCIE Data Center flashcards

28 cards. Read the term and the definition here. The deck at the top of this page is optional.

vPC peer-link

The inter-peer connection serving specific vPC synchronization and forwarding roles, distinct from the separate peer-liveliness function of the keepalive path.

Route resolution

The process of obtaining a usable forwarding next hop for selected reachability, not guaranteed merely by an established routing session.

Longest-prefix match

A forwarding lookup rule selecting the most specific matching usable prefix, distinct from route preference comparisons among alternatives for the same prefix.

Multicast RPF

A reverse-path check comparing packet arrival with expected tree or source reachability, relevant independently of receiver membership state.

Bridge domain

An ACI forwarding construct defining Layer 2 scope and related properties, associated with a routing context and distinct from endpoint policy grouping.

Endpoint group

A policy classification construct for endpoints whose membership and contract relationships must be reconciled with actual attachment and forwarding context.

Access-policy chain

The connected interface, policy-group, AEP, domain, pool, and endpoint-binding relationships needed for the intended ACI physical attachment.

Contract filter

A set of matching service criteria used within applicable ACI policy relationships, not equivalent to routing reachability or a descriptive contract name.

VTEP

A VXLAN tunnel endpoint that encapsulates or decapsulates traffic and depends on usable underlay reachability to other relevant tunnel endpoints.

Route target

A route attribute used in intended import and export membership policy, serving a different purpose from route uniqueness supplied by a distinguisher.

L3 VNI

A VXLAN identifier associated with tenant routed overlay context in the applicable design, distinguished from the identifier for a bridged segment.

BUM distribution

Delivery behavior for broadcast, unknown-unicast, and multicast traffic, requiring the relevant replication or multicast membership and transport state.

Service profile

A UCS configuration abstraction combining identity and policy relationships for a server, whose deployment, compatibility, and activation must be verified.

Updating template

A UCS Manager service-profile template type that propagates later changes to associated profiles, requiring attention to dependency and activation impact.

Identity pool

A managed allocation source for values such as MAC addresses or WWPNs, whose capacity and uniqueness must match actual profile requirements.

Host multipathing

A supported host mechanism coordinating alternate storage paths to the same device, not created merely by presenting multiple unrelated volume instances.

Active zoneset

The effective set of FC zones for the relevant VSAN, distinguished from additional configured zoning entries that are not currently active.

LUN masking

Storage-side control of volume presentation to initiators, separate from the fabric permission allowing communication with a target port.

NPIV

A Fibre Channel virtualization capability allowing multiple N-port identities on a suitable connection, relevant to upstream support for an NPV edge.

Priority flow control

Ethernet link-level pause behavior for selected priorities, distinct from encryption, global fairness, or end-to-end source-rate control.

CoPP

Control-plane policing that classifies and regulates CPU-directed traffic under configured policy, distinct from simply increasing data-interface physical capacity.

ERSPAN

Encapsulated remote traffic mirroring requiring an appropriate transport path and collector, with interpretation dependent on selected sources and directions.

Microburst

A short traffic surge capable of causing transient queue pressure or drops while remaining obscured within a longer utilization average.

Authorization

The decision about which operations an authenticated identity may perform, requiring appropriate role and attribute mapping rather than merely a successful login.

Idempotency

The intended convergence property that repeating an operation against already desired state does not accumulate additional unintended changes, subject to actual implementation semantics.

Semantic validation

Checking that an operation returned the expected objects, values, and result, beyond confirming only syntactic validity or HTTP transport success.

Configuration drift

A difference between managed intended state and observed configuration, requiring clear ownership and reconciliation behavior across controller and manual changes.

Asynchronous task

An accepted operation that can continue after its initial response, requiring completion tracking and resulting-state validation rather than immediate success assumptions.