4A0-115 Nokia Ethernet Virtual Private Network Services Questions and Answers

A PE uses the received updates to create aliasing lists to PES that are part of an all-active Ethernet segment.

A PE advertises an A-D per EVI route for each operational service defined on an Ethernet segment.

The updates include an Ethernet tag ID that is set to zero.

The updates are used to discover all the PES associated with an Ethernet segment.

In the single-active mode, the CE requires a LAG to be configured between the CE and all attached PEs.

In the single-active mode, the CE forwards traffic to all attached PES and receives traffic from a single PE.

In the all-active mode, all PES attached to a CE can forward traffic to and from the CE.

The Nokia 7750 SR supports a CE being multi-homed to a maximum of two PEs.

PEI brings the SAP in VPWS 4 operationally down.

PE3 sets the P flag in its advertised A-D per EVI route to I.

PE2 receives a single A-D per EVI route. The route is originated from PE3.

PE2 receives two A-D per ES routes: one from PEI and another from PE3.

PEI advertises an A-D per EVI route that includes a tag ID set to 40.

PEI advertises an A-D per EVI route that includes a non-zero Layer-2 MTLJ.

PE2 advertises an A-D per EVI route that includes a P flag set to I.

All PES advertise a MAC route that includes a non-zero MPLS label.

It is advertised with the auto-discovery per EVPN instance (A-D per EVI) route.

It is applicable to EVPN VPLS services.

It specifies the service maximum transmission unit (MTU).

It specifies a P flag that indicates whether the advertising PE is a primary PE.

CEI generates an update message to PEI withdrawing its MAC.

PEI generates an update message to remote PES identifying the new location of CEI.

PE2 advertises a MAC/IP route for MACI with a sequence number higher than that received from PEI.

PE3 waits to receive a data packet from CEI to update its FDB entry for MACI.

When forwarding BUM traffic, the local PE must replicate the traffic and send it as unicast to the advertising neighbor.

The MPLS label 524284 presented indicates the service label value that the neighbor 10.10.10.2 uses to forward BUM traffic to PEI.

When forwarding BUM traffic, the local PE uses an MPLS transport tunnel towards the advertising neighbor.

The IMET route is imported by a local VPLS configured with a route-target value of 65100:10.

The same tag ID must be configured for the local attachment circuit (AC) at each PE.

Each PE advertises a MAC route and an A-D per EVI route when its local AC becomes operationally UP.

The advertised A-D per EVI route includes a non-zero tag ID and a non-zero MPLS label.

Each PE verifies that the received tag ID matches its configured local AC tag ID.

EVPN MAC/IP routes are used to advertise the IP prefixes of subnets attached to a VPRN.

VPRN instances are interconnected using a supplementary broadcast domain (SBD) VPLS.

Intra-subnet traffic is carried over the tunnels provided by the SBD VPLS.

The MAC/IP routing information is used to populate the VPRN routing table at the remote PEs.