Full Access HP HPE7-A01 Tutorials

The Inter-Switch Link (ISL) is a fundamental component of an AOS-CX Virtual Switching Extension (VSX) pair. It serves both as a Layer 2 forwarding path between the VSX peers and as the principal control-path channel used to synchronize operational state between the two switches.

HPE Aruba Networking explicitly identifies the MAC table as one of the data structures synchronized across the VSX ISL. Other synchronized information includes the ARP table, LACP state for VSX LAGs, and MSTP state. This synchronization enables both independent VSX switches to maintain consistent forwarding information and support resilient multi-chassis LAG operation. Aruba Networking

The architecture is important because VSX does not merge both switches into a single control plane. Each peer retains its own control plane, while selected operational databases and protocol states are synchronized through the ISL. HPE ' s Campus Design guidance similarly states that VSX peers synchronize MAC, ARP, STP, and other state tables across the ISL. Aruba Networking

An SVI is configuration rather than the requested synchronized forwarding-table information. UDLD is a link-detection protocol, and RPVST+ is not the answer identified in Aruba ' s ISL synchronization list.

Study Guide Topics: AOS-CX VSX, Inter-Switch Link, VSX Synchronization, MAC Address Tables, ARP Synchronization, LACP State, MSTP State.

The best option to enhance security for the new IP cameras and scanners in this environment is C. MPSK provides for each device in the WLAN to have its own unique pre-shared key.

MPSK stands for Multi Pre-Shared Key, and it is a feature that allows different devices to connect to the same SSID with different pre-shared keys. This improves the security and scalability of the network, as each device can have its own key and role without requiring 802.1X authentication or an external policy engine. MPSK can be configured either locally on the AP or centrally on Aruba Central12.

The other options are incorrect because:

A. MPSK Local is a feature that allows the user to configure 24 PSKs per SSID locally on the device. These local PSKs would serve as an extension of the base MPSK functionality. However, MPSK Local is not suitable for this scenario, as it can only support up to 24 devices per SSID, while the client has 250 devices1.

B. Aruba ClearPass is a network access control solution that can perform 802.1X authentication and install certificates for devices. However, this option is not feasible for this scenario, as the new IP cameras and scanners do not support 802.1X authentication3.

D. MPSK Local will not allow the cameras to share a key and the scanners to share a different key. MPSK Local will assign a different key to each device, regardless of their type. Moreover, MPSK Local can only support up to 24 devices per SSID, while the client has 250 devices1.

The information that the Inter-Switch Link Protocol configuration uses in the configuration created is B. MAC tables.

The Inter-Switch Link Protocol (ISL) is a protocol that enables the synchronization of data and state information between two VSX peer switches. The ISL uses a version control mechanism and provides backward compatibility regarding VSX synchronization capabilities. The ISL can span long distances (transceiver dependent) and supports different speeds, such as 10G, 25G, 40G, or 100G1.

One of the data components that the ISL synchronizes is the MAC table, which is a database that stores the MAC addresses of the devices connected to the switch and the corresponding ports or VLANs. The ISL ensures that both VSX peers have the same MAC table entries and can forward traffic to the correct destination2. The ISL also synchronizes other data components, such as ARP table, LACP states for VSX LAGs, and MSTP states2.