Exam HPE6-A73 topic 1 question 82 discussion

From the tech docs "Active forwarding is an optimization for layer 3 unicast traffic flowing from the upstream (core) to the downstream (access) through the VSX peers (aggregate). "

From ACSP learning book Advanced OSPF : "Using OSPF with VSX: - Transit OSPF interfaces : - L2 VSX LAG associated with L3 VLAN (or VLANs) - Active forwarding on VLAN - Interfaces for which VSX pair is default gateway : - Active gateway - Possible passive OSPF interface"

https://www.arubanetworks.com/techdocs/AOS-CX/10.07/HTML/5200-7888/Content/Chp_Pre_tra_loss/act-for-10.htm Active forwarding is an optimization for layer 3 unicast traffic flowing from the upstream (core) to the downstream (access) through the VSX peers (aggregate). Active forwarding prevents the bridged traffic from switching over the ISL. It also minimizes latency and the ISL bandwidth B & D Active Forwarding must be enabled on VLAN NOT on Layer 3 VLAN: "The active forwarding, which is set per- VLAN...." [Aruba Networks] C no sense

Note: Interface LAG assignments and VLAN access statements cannot be assigned to an interface simultaneously. An error occurs when saving the MultiEdit configuration, if the vlan access 1 statement is not removed, so you need to define a separate layer 3 interface, and to configure the Active forwarding. Answer: B

Chapter 6 - Advanced OSPF - Using OSPF with VSX. Same Graphic - Description: Transit OSPF interfaces - Layer 2 VSX LAG associated with Layer 3 VLAN (or VLANs), Active Forwarding on VLAN. So Answer D

should be B. The question is for the connection to the Core switch, should be active forwarding. Active gateway is useful for dowstream VSX LAG to access-switches

the right answer is C, with active gateway and not active forwarding

Answer D : layer-2 VSX LAG associated with a layer-3 VLAN interface. Enable active forwarding for the Layer-3 VLAN - These are for transit OSPF interface and so forth, it applies. Study guide: Page : 196

Answer B : Active forwarding should be enable on every OSPF interface that is a transit network.

Correct Answer: A