Aruba Certified Switching Expert HPE7-A08 Exam Dumps

This question involves OSPF peering configured between CX 6300 switches using BFD (Bidirectional Forwarding Detection). BFD parameters include transmit (Tx) and receive (Rx) intervals.

Switch B has custom BFD interval values configured, but switch A is at default configuration.

According to Aruba CX default BFD parameters, the Tx and Rx intervals default to 2000ms (2 seconds). This is why switch A’s show BFD session displays intervals of 2000ms even if switch B uses different values.

BFD interval negotiation results in the highest Tx/Rx interval being used, or default in case one side is unconfigured.

The multicast group address 239.0.0.1 falls within the administratively scoped multicast addresses but overlaps with the Link-Local Multicast address scope (224.0.0.0/24), which is reserved for protocol control traffic and should not be used for application multicast groups. Using an address that overlaps with the Link-Local scope can cause multicast routing and forwarding issues, leading to video streaming clients not receiving the stream.

IGMP snooping version or enabling IGMP without multicast traffic do not cause this issue.

PIM-SM discovery addresses are different multicast addresses.

When deploying a new Aruba CX 8325 switch to provide gateway and routing services, the L3-apg profile (Layer 3 Aggregation Profile) should be selected instead of the factory default. This profile is designed for switches acting as aggregation or core routers, enabling Layer 3 routing capabilities and optimized configurations for such roles.

The Spine profile (factory default) is optimized for leaf/spine architectures, but may not be ideal for aggregation gateways.

Leaf and L3-core profiles are targeted for different roles.

Using the L3-apg profile helps to ensure the switch is correctly optimized for Layer 3 gateway functions.

If interfaces 1/1/53 and 1/1/54 connected to the primary VSX switch are disconnected and Client A experiences disruptions, configuring VSX shutdown on-split on SW-A (the primary) is necessary to prevent traffic forwarding during a split-brain scenario. This feature ensures that in case of link failure, the switch does not continue forwarding traffic independently, avoiding network loops or inconsistent states.

Configuring keepalive VLANs on downstream or upstream lags helps in monitoring but does not prevent traffic disruption.

VSX shutdown on-split must be configured on the affected primary switch to protect network integrity.