HCNP-WLAN H12-321 Huawei Study Notes

The same radio of an AP can only be added to a load balancing group.

If it is a multi-frequency AP, the load balancing between the radios in the same frequency band on the AP is implemented.

A dual-band AP can be added to two load balancing groups at the same time.

Limited members in each load balancing group, supporting up to 32 members

AC1

AC2

Either of them

None of them

An AC can issue STP configurations to APs only when wired interfaces of APs are not bound to an Eth-Trunk.

Mesh links only transparently transmit STP packets.

An STP-enabled AP does not forward STP packets to the wireless side. STP takes effect only on the AP's wired side.

STP can prevent loops for multiple rings on a Mesh network.

Dual-link HSB: backs up AP, STA, and CAPWAP link information.

VRRP HSB: backs up AP, STA, and CAPWAP link information.

No matter in hot standby or cold standby mode, a standby AC can provide backup services for only one active AC.

Dual-link backup is a cold backup mode, which does not back up STA information. An AP sets up a link with both the active and standby ACs. During an active/standby switchover or a revertive switchover, STAs need to go online again and services are temporarily interrupted.