Network Topology Overview
The Network Topology window presents a graphical, topological map view of devices, the links between them, and the active alarms on elements in the map. It also enables you to visualize circuits/VCs within the displayed topology map. In addition, the Network Topology window provides access to map element tools and functions, and allows you to drill-down to get detailed information about map elements.
The Network Topology window is accessed from the left sidebar (Create Groups of Devices for Easier Management and Configuration for more information. )
). The content of the Network Topology window is determined by the device group you have selected. To select a device group, click the Device Groups button from the toolbar, then use the Device Groups panel to select a group. (From the Device Groups panel you can access the central device grouping functionality to create new groups, add devices to groups, and so on. SeeEach Network Topology map is divided into a left pane that contains alarms/circuits/VCs/links information, and a right pane that displays the map itself. From the left pane, use the toolbar to control the spacing of both panes. For example, if you select 100%, only the map will be shown. If you select 50%, the map and the left pane will share the screen equally. When the left pane is expanded, additional columns might be added to the tables in the tabs.
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Alarm Summary, Circuits/VCs, and Links (left pane)— Provides information relevant to the devices and topology shown in the map. - Alarm Summary tab—Shows all the current alarms for the selected group, categorized by alarm severity. In addition to a table showing the number of alarms for each alarm severity, the Alarm Summary tab provides a graphical pie chart view of the current alarms, which is color-coded based on alarm severity. This enables you to see, at a glance, the distribution of alarm severities and the number of alarms of each severity. In both the table and the pie chart you can drill down to see a table listing the actual alarms of that severity. To see all the alarms for the selected device group, click the Alarms Table link at the bottom of the Alarm Summary tab.
- Circuits/VCs tab—Lists the
circuits/VCs relevant to the devices in the selected group, and indicates the
primary state of each circuit/VC. The primary state reflects the most serious
current state of the circuit, as derived from the provisioning, serviceability,
discovery, and alarm states. See
Circuit or VC States.
By default, the circuits/VCs are sorted by primary state, from most to least
severe. Note that:
- Selecting a circuit/VC in the list displays a visual representation of the circuit/VC in the topology map.
- Clicking the Circuits/VCs link at the bottom of the tab launches a separate window with a table of circuits/VCs providing more details for each circuit/VC.
- Clicking the Network Interfaces link at the bottom of the tab launches a table listing the interfaces that have been configured for participation in circuits/VCs, such as UNIs and ENNIs.
- Clicking the appropriate toolbar icon allows you to peform actions such as creating a new circuit or running an ITU-T Y.1564 test on the selected circuit.
- Links tab—Lists the links relevant to the selected device group and shows the highest severity alarm on the link. Selecting a link in the table highlights the link in the topology map. Clicking the Links Table link at the bottom of the tab launches a separate window with a table of links.
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Topology map (right pane)—Displays the topology of the selected device group in graphical form. It displays the group’s devices and sub-groups (if any) and the links between them (Physical, Ethernet, and technology-specific links). It also displays the active alarms on the devices or links so that you can easily identify problems in the network. You can drill down from the topology map to detailed information about a device or link in order to troubleshoot problems. The topology map can be customized, filtered, and manipulated to show exactly the information you need.
You can toggle between the network topology map and the geographical map using the toggle buttons in the top right corner of the map.