Function

Topology Management

• Manages topology objects, including creating or deleting virtual NEs and links, and deleting subnets.
• Sets the information to be displayed under a device icon, including device name, IP address, and system name.
• Lays out topology objects in styles such as ring, symmetrical, top-down tree, and left-right tree.
• Aligns topology objects in styles such as left-aligned, right-aligned, and center aligned.
• Adjusts the locations of NEs and subnets and sets the topology background.
• Sets search criteria to quickly locate an object, such as a subnet, a link, or an NE.
• Zooms in on and zoom out of a topology and restore to the original display of the topology.

Customized Topology

Network management personnel select network entities within their management scopes to configure custom topology views, which achieves precise monitoring and efficient operation and maintenance (O&M). In a customized topology, you can:

• Add, modify, and delete custom topology views.
• Share custom topology views with other users.
• Import NEs or subnets in the physical topology to enter a customized view to create a service view that meets their own requirements.
• Adjust the existing objects in a user-defined topology view.

Topology Monitoring

• Allows users to view the physical view in full screen or aerial view.
• Customizes topologies to focus on specific service dimensions.
• Monitors the network running status of the ICT system using the physical topology view.
  • Monitors the running status and online/offline status of NEs based on the NE icon colors.
  • Monitors the running status and online/offline status of NE sets under a subnet based on the subnet icon colors.
  • Monitors the status of communication connections between NEs or subnets based on the link icon colors.
  • Monitors the running status and online/offline status of links in a link set based on the link set icon colors.
  Table 3-6 Mapping between NE and subnet statuses and colors

  Status			NE Icon Color	Subnet Icon Color
  Online	Normal		Green	Green
  	Abnormal	Warning	Sky blue	Sky blue
  		Minor alarm	Yellow	Yellow
  		Major alarm	Orange	Orange
  		Critical alarm	Red	Red
  Offline	Abnormal		Gray	Gray
  Unmanaged			Dark gray	-

  The color of a subnet icon indicates the color of the online or offline NE with the highest priority (usually the lowest running status) in the subnet. The running status of the online or offline NE is displayed in descending order of priority: Offline > Critical alarm > Major alarm > Minor alarm > Warning > Normal. For example:

  • A subnet is in offline state (the icon color is gray) when NEs in the subnet are in the following states:
    • Offline (icon color: gray )
    • Critical alarm (icon color: red )
  • A subnet is in critical alarm state (the icon color is red) when NEs in the subnet are in the following states:
    • Critical alarm (icon color: )
    • Warning (icon color: sky blue )
  Table 3-7 Mapping between link and link set statuses and chart colors

  Status			Link Icon Color	Link Set Icon Color
  Online	Normal		Green	Green
  	Abnormal	Emergency fault	Red	Red
  		Major fault	Orange	Orange
  		Unknown	Sky blue	Sky blue
  Offline	Abnormal		Gray	Gray
  Not managed	Abnormal		Dark gray	Dark gray

  The colors of link set icons indicate the color of the link with the highest priority (usually the worst running status) in the link set. The link status is displayed in descending order of priority as follows: not managed > offline > unknown > critical > major > normal. An example is as follows:

  • If the links in a link set are in the following states, the link set is displayed as offline (the link set icon is gray):
    • Offline (link icon: gray )
    • Critical fault (link icon: red )
  • If the links in a link set are in the following states, the link set is displayed in critical alarm status (the link set icon is red):
    • Critical fault (link icon: red )
    • Major fault (link icon: orange )

Figure 3-8 shows the topology management page.

Figure 3-8 Topology management page