Cisco Ultra-Reliable Wireless Backhaul Standalone, Software Configuration Guide, Release 26.1.x

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Configure and validate high efficiency

Updated: April 10, 2026

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Configure and validate 802.11ax High Efficiency (HE) mode on URWB devices to enable backward compatibility with 802.11ac.

This task enables or disables 802.11ax High Efficiency (HE) mode on URWB devices and validates the configuration.

When High Efficiency (HE) is enabled, it is backward compatible with 802.11ac. To enable or disable 802.11ax HE, the following list is supported:

  • URWB HE supports 20,40, and 80 MHz bandwidth for slot 1

  • URWB HE supports 20,40,80, and 160 MHz bandwidth for slot 2

  • URWB HE default setting is disabled

  • HE negotiation is only supported between the devices with HE enabled

Procedure

1.

Use the configure dot11Radio {1 | 2} high-efficiency {enable | disable} command to enable or disable HE mode.

Example:

Device# configure dot11Radio 1 high-efficiency enable
2.

Use the configure dot11Radio {1 | 2} mcs maxmcs mcs-index command to configure maxmcs.

Example:

Device# configure dot11Radio 1 mcs maxmcs 11
Note

The default maxmcs is 9.
3.

Use the show dot11Radio {1 | 2} config command to validate HE mode.

Example:

Device# show dot11Radio 1 config
Maximum tx mcs : 9
High-Efficiency : Enabled
Maximum tx nss : 2
RTS Protection : disabled
guard-interval : 800ns
4.

Use the show eng-stats command to view engineering statistics:

Example:

Device# show eng-stats

WLAN1 Rx:

FC:58:9A:16F8:52 rate 1201 MCS 11/2 HE80/G1(800ns) ssn 48 rssi-48 received

WLAN1 Tx:

FC:58:9A:16F8:52 rate 1201 MCS 11/2 HE80/G1(800ns) sent 195612 failed 0

WLAN2 Rx:

FC:58:9A:16F8:13 rate 1201 MCS 11/2 HE80/G1(800ns) ssn 50 rssi-46 received

WLAN2 Tx:

FC:58:9A:16F8:13 rate 864 MCS 11/2 HE80/G1(800ns) sent 390797 failed 1