An engineer is conducting a failover test with a Mesh deployment by disconnecting the network interface of a RAP. A MAP becomes stranded even though it has an acceptable RSSI value on the link to…

The correct answer is B. the MAP is 9 hops away C. the SNR on the neighbor link is 5dB. Cisco Mesh networks enforce two key thresholds beyond RSSI that can strand a MAP: (1) Maximum hop count - Cisco Mesh supports a maximum of 8 hops from a MAP back to a RAP. A MAP 9 hops away (choice B) exceeds this limit and cannot establish a valid backhaul path. (2) Minimum…

Wireless Troubleshooting

Question

An engineer is conducting a failover test with a Mesh deployment by disconnecting the network interface of a RAP. A MAP becomes stranded even though it has an acceptable RSSI value on the link to its neighbor. What are two reasons the MAP may become stranded? (Choose two.)

Options

Athe MAP is 6 hops away
Bthe MAP is 9 hops away
Cthe SNR on the neighbor link is 5dB
Dthe SNR on the neighbor link is 15dB
Ethe throughput on the neighbor link is 18Mbps
Fthe throughput on the neighbor link is 24Mbps

How the community answered

(21 responses)

A
14% (3)
B
48% (10)
D
5% (1)
E
5% (1)
F
29% (6)

Explanation

Cisco Mesh networks enforce two key thresholds beyond RSSI that can strand a MAP: (1) Maximum hop count - Cisco Mesh supports a maximum of 8 hops from a MAP back to a RAP. A MAP 9 hops away (choice B) exceeds this limit and cannot establish a valid backhaul path. (2) Minimum SNR - Cisco Mesh requires a minimum SNR of approximately 12 dB on the backhaul link. An SNR of 5 dB (choice C) falls well below this threshold, making the link unusable even if RSSI appears acceptable. An SNR of 15 dB (choice D) would be sufficient, and throughput values of 18 or 24 Mbps are above the minimum required, so those choices are not stranding factors.

Topics

#mesh troubleshooting#MAP stranded#hop count limit#SNR threshold

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