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Layer 3 Roaming Issues
The Network Is Disconnected After STAs Roam at Layer 3
Fault Symptom
The network is disconnected after STAs roam at Layer 3.
Procedure
- Check the service VLAN configuration on the AC.
Error-prone configuration: Service VLANs are not created or not added to the allowed list, causing network disconnection after STAs roam at Layer 3.
Suggestion: Create the service VLANs and add them to the allowed list on the AC and intermediate switches.
<AC> system-view [AC] vlan batch 101 //Create a VLAN. [AC] interface gigabitethernet 0/0/1 [AC-GigabitEthernet0/0/1] port link-type trunk [AC-GigabitEthernet0/0/1] port trunk allow-pass vlan 101 //Configure the port to allow packets from the VLAN to pass through. [AC-GigabitEthernet0/0/1] quit
STAs Cannot Roam at Layer 3
Fault Symptom
STAs cannot roam at Layer 3.
Procedure
- Check whether Layer 3 roaming is disabled on the AC.
Error-prone configuration: After Layer 3 roaming is disabled, APs only allow their connected STAs to roam to other APs at Layer 3 but deny access from Layer 3 roaming STAs.
[AC-wlan-view] vap-profile name huawei [AC-wlan-vap-prof-huawei] layer3-roam disable
Suggestion: Delete the configuration of disabling Layer 3 roaming, unless necessary.