What are best practices when implementing VSX on AOS-CX switches? (Choose two.)
What are best practices when implementing VSX on AOS-CX switches? (Choose two.)
When implementing VSX on AOS-CX switches, it is advised to leave the timers at their default values to promote stability and simplify configuration management. Additionally, the keepalive connection should be configured using a direct layer-3 connection to ensure robust communication between the switches, even if the ISL (Inter-Switch Link) fails. These practices help maintain the resilience and optimal performance of the network.
Correct Answer: BD
Page 194 Study Guide: Keep ISL timers (dead- interval, hello- interval, hold- time, peer- detect- interval) at default value [Aruba Networks] Page 193 Study Guide: Keepalive Link The best practice for the Keepalive connection is to use a direct L3 circuit, which can be a low speed port (1G transceiver is enough, 1GBASE- T works as well) between both VSX nodes. [Aruba Networks]
B & D are correct Whilst you can use 10GbE SFPs for an ISL it is not recommended by Aruba thus not a best-practice.
B & D is correct, B: p193 of SG (default timer) D: p190 of SG (direct-connected L3 Lag)
DE The best practice for ISL bandwidth is at least 2x40G (QSFP+) or 2x 50G(SFP56) or 2x100G (QSFP28). It is technically possible to use2x10Gor 2x25G; The best practice for Keepalive connection is to use a direct L3 circuit p16 and p29 VSX COnfiguration Best praticse document
B & D: The best practice for inter-switch-link timers(dead-interval, hello-interval, hold-time, peer-detect-interval) is to keep the default timers (i.e.no specific configuration) -> p19 Whilst you can use 10GbE SFPs for an ISL it is not recommended by Aruba thus not a best-practice.
D & E should be correct, suggested 40g but can work on 10g
Answer is D and E. Reason B cannot be it because it bluntly says timers but doens't specify which timer. If it says "ISL Timers should be left at their default values." then that ould be true. For instance, VSX linkup-delay-timer is st to 600 so that nullifies option B. https://support.hpe.com/hpesc/public/docDisplay?docId=a00094242en_us
Correct answer is B&D. Best practices page 193. (Leave the timers at their default values)
ISL ports can be 1G https://www.arubanetworks.com/techdocs/AOS-CX/10.09/HTML/vsx/Content/Chp_Start/int-swi-lin-isl-10.htm All ISL ports must have the same speed. The speed can be 1G, 10G, 25G, 40G, 50G or 100G, with 40G and 100G being the preferred speeds.
B & D are correct. The question talks about best-practice. 10G on ISL is not best-practice. Aruba recommends 40 or 100 GB, so answer E is wrong
From ACSP learning book VSX : "Best practices : - Use a direct L3 connection for the keepalive connection - Leave the timer at their default values - ISL LAG : use at least 2x40G or faster links - Define the VSX system-MAC and do not let it default to the built-in system-mac" Correct answer is B & D