License states on S series switches

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For S series (except the S1700) switches, if Expired date of a license is PERMANENT, the license state is normal.

Other related questions:
What should I do when a CE series switch license file changes to the trial state
If a license in trial state expires, successfully delivered configurations of a licensed feature will be retained and take effect. You are allowed to delete existing service configurations related to the licensed feature, but not to add new configurations. Therefore, apply for a new license and activate it before the current license expires. Otherwise, services will be affected.

License classification on S series switch
Licenses are classified as follows: Depending on purpose, licenses are classified into commercial (COMM) licenses and non-commercial (DEMO) licenses. Commercial license Generally, these licenses are purchased according to contracts, and are permanently valid. Non-commercial license These licenses are used for special purposes such as testing and trial, and are strictly controlled. Depending on authority, licenses are classified into feature licenses and capacity licenses. Feature license License-controlled features cannot be used without a license. An enhanced feature takes effect only after the value-added feature or another enhanced feature it depends on takes effect. Therefore, both the license for the enhanced function and the license for the dependent function must be installed. Capacity license These licenses are used to expand dynamic resources on the product. A capacity license takes effect only after the corresponding feature takes effect. If the feature is a license-controlled one, the license for the feature must be loaded before the capacity license. Customers can choose not to purchase a capacity license and use the default number of resources supported by the product, or purchase one or more licenses to obtain the total number of resources supported by the purchased licenses.

Why is an OSPF-enabled interface on an S series switch in different states
Question: Why is an OSPF-enabled interface in different states? Answer: If a tunnel interface is created using the IP address of an OSPF-enabled loopback interface and the tunnel interface is Down, the interface is in different states. You can run the display ospf interface all command to check details about an OSPF interface. [HUAWEI]display ospf interface all OSPF Process 1 with Router ID 1.1.1.1 Interfaces Area: 0.0.0.0 (MPLS TE not enabled) Interface: 1.1.1.1 (LoopBack0) Cost: 1 State: DR Type: Broadcast MTU: 1500 Priority: 1 Designated Router: 1.1.1.1 Backup Designated Router: 0.0.0.0 Timers: Hello 10 , Dead 40 , Poll 120 , Retransmit 5 , Transmit Delay 1 Interface: 1.1.1.1 (Tunnel0/0/1) Cost: 1562 State: Down Type: P2P MTU: 1500 Unnumbered Timers: Hello 10 , Dead 40 , Poll 120 , Retransmit 5 , Transmit Delay 1

Why is an OSPF route on an S series switch in the Invalid Adv state
Question: Why is an OSPF route in the Invalid Adv state? Answer: After you run the display ip routing-table x.x.x.x verbose command on an S series switch supporting OSPF to check information about a specified route, you may find that Invalid Adv is displayed in the State field. Possible causes are as follows: A route with a smaller preference value, for example, a directly connected route, exists. The route is filtered out based on a filter policy. A sham link is configured on the outbound interface.

License support on S series switch
S series switches support licenses as follows: Among S series fixed switches, only S5720HI switches in V200R006C00 and later versions support license files.(The S5720HI can increase the number of IPv4 FIB entries or connected APs by loading different licenses.) All S series modular switches support license files.

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