How to check whether the CAPWAP link is set up?

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Follow these steps : system-view
[AC6605] diagnose
[AC6605-diagnose] display capwap linkinfo

Other related questions:
Service holding upon CAPWAP link disconnection
Service holding upon CAPWAP link disconnection 1. Service holding upon CAPWAP link disconnection is applicable only to the direct forwarding mode. 2. WDS and Mesh networks do not support service holding upon CAPWAP link disconnection. 3. Security policies are open authentication and PSK authentication, without 802.1x or Portal authentication. For V200R005, run the following commands: [HUAWEI]wlan [HUAWEI-wlan-view]ap id xx [HUAWEI-wlan-ap-id]keep-service enable //Enable service holding upon CAPWAP link disconnection. [HUAWEI-wlan-ap-id]keep-service enable allow new-access //Enable offline APs to allow access of new STAs. [HUAWEI-wlan-ap-id]quit [HUAWEI-wlan-view]radio-profile xx [HUAWEI-wlan-radio-prof-xx]channel-switch announcement enable //Enable the channel switch announcement function. [HUAWEI-wlan-radio-prof-xx]channel-switch mode continue-transmitting //Configure data transmission from STAs to continue on the current channel when the channel is switched. When an AP's channel needs to be switched, the AP notifies STAs of channel switching after a specified number of Beacon intervals, enabling the AP and STAs to switch the channel simultaneously. This prevents STAs from reassociating with the AP. [HUAWEI-wlan-view]commit { all | ap id xx } For V200R006, run the following commands: [HUAWEI]wlan [HUAWEI-wlan-view]ap-system-profile name ap-system1 [HUAWEI-wlan-system-prof-ap-system1]keep-service enable //Enable service holding upon CAPWAP link disconnection. [HUAWEI-wlan-ap-id]keep-service enable allow new-access //Enable access of new STAs upon CAPWAP link disconnection. [HUAWEI-wlan-ap-id]quit [HUAWEI-wlan-view]radio-2g-profile name wlan-radio2g [HUAWEI-wlan-radio-2g-prof-wlan-radio2g]channel-switch announcement enable //Enable the channel switch announcement function. [HUAWEI-wlan-radio-2g-prof-wlan-radio2g]channel-switch mode continue-transmitting //Configure data transmission from STAs to continue on the current channel when the channel is switched. Configure the preceding functions as required.

What are the timeout mechanism of CAPWAP links and timeout period calculation
Timeout mechanism of CAPWAP links: 1. The timeout of CAPWAP links is detected by using keepalive (UDP port 5247) and echo (UDP port 5246) packets. - The keepalive packets detect the status of Link Layer Protocols. - The echo packets detect the status of Link Control Protocols (LCPs). 2. The AP sends the keepalive and echo packets. The AC sends response packets when receiving the keepalive and echo packets. 3. After the CAPWAP enters the Run state, the AP periodically sends the keepalive and echo packets at almost the same time. This interval is configured on the AC. 4. If the AP does not receive response packets from the AC during a certain period of time, the CAPWAP link is considered faulty and enters the Down state. This interval is the timeout period. 5. If the AC does not receive the keepalive or echo packets from the AP during the timeout period, the CAPWAP link is considered faulty and enters the Down state. Timeout period calculation: The timeout of CAPWAP link mechanism uses a timer to calculate the timeout period. A timer in the system is a countdown tool. For example, the AP sends the keepalive packets every 30s. When the CAPWAP link enters Run state, the AP immediately sends a keepalive packet and repeatedly sends keepalive packets at an interval of 30s. The timeout of CAPWAP link period is also calculated using a timer. For example, when the CAPWAP link enters the Run state, the AP immediately sends a keepalive packet, and the timer starts a countdown of 120s. When the AC sends a response packet, the timer restarts the countdown of 120s. If the timer restarts the countdown and the AP does not receive any response packet from the AC, the CAPWAP link is faulty. The timeout period of echo packets is calculated in the same way as the timeout period of keepalive packets. The timer is updated immediately when an echo packet is received from the AP.

How to disable the link status check function

Function The firewall session link-state check command configures the link status check function. The undo firewall session link-state check command disables the link status check function.

Format firewall session link-state [ icmp | tcp | sctp ] check undo firewall session link-state [ icmp | tcp | sctp ] check firewall ipv6 session link-state [ icmpv6 | tcp ] check undo firewall ipv6 session link-state [ icmpv6 | tcp ] check


How to check whether the ACL is mirrored ?
Run the display acl command to check whether ACLs on both ends are mirrored.

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