Which are two use cases for HSCI ports on the SMC module on PA-7000 Series? (Choose two )

Question

Options

• AHA1 backup link in active/active HA
• BHA1 link in active/passive HA
• CHA3 link in active/active HA
• DHA2 link in active/passive HA

• A
  3% (1)
• B
  6% (2)
• C
  90% (28)

Explanation

On the PA-7000 Series, HSCI (High Speed Chassis Interconnect) ports on the SMC module are purpose-built for high-bandwidth data plane functions, making them the correct choice for HA2 and HA3.

C is correct because HA3 is the active/active packet-forwarding link used to redirect packets between HA peers when asymmetric routing occurs - this requires high throughput, which HSCI provides.

D is correct because HA2 is the session synchronization link (syncing session tables, forwarding tables, etc.) and demands high-speed, low-latency connectivity that HSCI is designed for.

A and B are wrong because HA1 (the heartbeat/control-plane sync link) carries only low-volume keepalive and configuration state - it does not need HSCI's bandwidth. HA1 and HA1 backup use dedicated HA control ports or management interfaces instead.

Memory tip: Think "HSCI = High-Speed = Sessions and Steering" - HA2 syncs sessions, HA3 steers packets in active/active. HA1 is just a heartbeat, so it doesn't need the firehose.

No community discussion yet for this question.