What should I pay attention to when configuring IPSec VPN in hot standby networking


-The service interfaces (including VLANIFs) connecting the firewall to upstream and downstream devices must work at Layer 3.
-Before configuring IPSec VPN, you must establish the hot standby status. The IPSec policy configured on the active firewall will

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Air filter use precautions
Air filter on the rear of the S7700&S9700 chassis filters the air entering the chassis. It is recommended that you replace the air filter of a device every six months. If the temperature of operating boards is raised drastically though the room temperature does not change much, it is possible that the air filter is blocked by dust. You need to replace it.

S series switch RRPP configuration notes
The followings are notes about configuring RRPP on S series switches (except S1700): 1. You need to disable STP on ports. Note: Either RRPP or STP can be configured on a port. RRPP and STP cannot be configured synchronously. By default, ports are enabled with STP. 2. When instances are created, the major control VLAN and the sub-control VLAN must be included in the VLAN list. Note: By default, the sub-control VLAN ID is 1 larger than the major control VLAN ID. 3. After creating instances, you must run the active region-configuration command to activate the MSTP region. Note: Region activation is easily to be neglected. After configuring instances, use check region-configuration command to check instance configurations that have taken effect. 4. Ports added to data VLANs must be Trunk-type or Hybrid-type ports. Note: RRPP ports need to allow packets in both control VLANs and data VLANs to pass through. 5. An RRPP port cannot be successfully added to a VLAN if RRPP snooping has been enabled on the VLANIF interface of the VLAN. 6. When control VLANs are created, the control VLAN specified by vlan-id and the sub-control VLAN specified by vlan-id plus one must be VLANs that have not been created and are not used in the configuration of VLAN mapping or VLAN stacking. In addition, no interface is added to the VLANs. Note: The sub-control VLAN is easily to be neglected. Existence of a sub-control VLAN often causes failures of major VLAN creation. Even if a sub-ring is not needed, the sub-control VLAN whose VLAN ID is 1 larger than the VLAN ID of the major control VLAN is automatically created when the major control VLAN is created. 7. DHCP cannot be configured for an RRPP control VLAN. 8. VLANs allowed by RRPP ports need to be configured as protected VLANs, including data VLANs and control VLANs. Note: Before configuring RRPP rings, protected VLANs must be configured. In the same physical topology, control VLANs of the local domain cannot be protected VLANs of other domains. The control VLANs must be included in the scope of protected VLANs. Otherwise, rings are not allowed to be configured. When mapping between instances and VLANs changes, the scope of protected VLANs of the RRPP domain also changes. 9. RRPP rings can be activated only when the RRPP rings and the RRPP protocol are enabled synchronously. 10. The network topology convergence speed varies with the number of configured domains and rings. Smaller number means faster convergence. 11. Due to the hardware specification limitation, resources must be allocated properly when multiple RRPP rings are configured. For more details on RRPP configuration notes and fault location methods, click RRPP配置注意事项.

What Should I Pay Attention to When Logging In to the ServiceCenter Cloud Host Using VNC
【Product�? ManageOne ServiceCenter 【Version�? 3.0 【Question�? What should I pay attention to when logging in to the ServiceCenter cloud host using VNC? 【Answer�? Pay attention to the following items when logging in to the ServiceCenter cloud host using VNC: You can log in to the cloud host using VNC only when the cloud host is in the running state. If you specify a password when creating the cloud host, you are advised to log in to the cloud host five minutes after the cloud host is created. For security purposes, change your password for logging in to the cloud host in a timely manner. When you log in to a cloud host using VNC, other users cannot log in to the cloud host in other modes. ----End

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