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Chapter 7      Viewing Devices, Links, and Services in Maps
  Finding Services Using Map Overlays
Figure 7-9 Aggregation Thumbnails
This table lists the ways to move between aggregations and parent maps.
Finding Services Using Map Overlays
When you apply an overlay to a map, you can isolate the parts of a network that are being used by a 
specific service such as VPLS, network pseudowire, MPLS-TP tunnels, and so forth. Prime Network 
models and manages many more technologies and services which you can view from a device’s inventory 
window. Those technologies and services are described in other topics in this guide.
If you want to... Do this...
View and drill into only the aggregation (not other NEs 
in the map)Double-click the thumbnail frame (or the 
aggregation itself, if it is closed)
From an aggregation, go up one level (parent level) Double-click the inner level background
Open and close thumbnail Click the plus/minus sign at the top right of 
the aggregation 
						

							  
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Chapter 7      Viewing Devices, Links, and Services in Maps
  Finding Services Using Map Overlays
Applying a Map Service Overlay
Step 1From the map toolbar, choose Choose Overlay Type >overlay-type, where overlay-type is one of the 
following.
The dialog box also displays the date and time at which the list was generated. To update the list, click 
Refresh.
Step 2Select the overlay that you want to apply to the map. Figure 7-10 shows an example of the Select 
Pseudowire Overlay dialog box. Overlay Option Search Criteria
Ethernet Service EVC Terminating EFPs, ethernet service name, system name. See Applying 
Ethernet Service Overlays, page 18-124.
MPLS-TP Tunnel Description, MPLS-TP tunnel name, system name. See Applying an MPLS-TP 
Tunnel Overlay, page 17-17.
Network Clock Name. See Applying a Network Clock Service Overlay, page 26-48.
Pseudowire Description, Is Multisegment Pseudowire, pseudowire name, pseudowire role, 
pseudowire type, system name. See Applying Pseudowire Overlays, 
page 18-113.
VLAN EFD name, EFD system name, VLAN ID, VLAN name, system name. See 
Displaying VLANs By Applying VLAN Overlays to a Map, page 18-77; Viewing 
REP Information in VLAN Domain Views and VLAN Overlays, page 18-80; and 
Viewing STP Information in VLAN Domain Views and VLAN Overlays, 
page 18-83.
VPLS Name, system-defined name, VPN ID. See Applying VPLS Instance Overlays, 
page 18-96 and Viewing Pseudowire Tunnel Links in VPLS Overlays, 
page 18-97.
VPN Description, VPN name. See Applying VPN Overlays, page 17-25. 
						

							  
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Chapter 7      Viewing Devices, Links, and Services in Maps
  Finding Services Using Map Overlays
Figure 7-10 Select Pseudowire Overlay Dialog Box
Step 3
In the Select Overlay dialog box, do either of the following: 
Choose Show All to list all overlays of that service type.
Choose Search to find the service using the following criteria. (Search strings are case-sensitive.)
Step 4Click OK, and the elements and links that are used by the overlay are displayed in the map, and the 
overlay name and date are displayed in the toolbar. 
NoteThe overlay is a snapshot taken at a specific point in time. To update the overlay, click Refresh 
Overlay in the toolbar. 
						

							  
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Chapter 7      Viewing Devices, Links, and Services in Maps
  Viewing and Managing Links
Figure 7-11 Clock Service Overlay Example
Hiding and Removing Service Overlays from a Map
To temporarily hide an overlay or remove it completely:
Temporarily hide a map overlay by clicking Hide Overlay/Show Overlay in the toolbar. The button 
toggles depending on whether the overlay is currently displayed or hidden. 
Delete an overlay from the map by choosing Choose Overlay Type > None.
Viewing and Managing Links
Links are the physical and logical connections that exist between elements in the network. You can get 
link property information for links that are:
Between two devices.
Between a device (Device A) and an aggregation, where a device inside the aggregation is connected 
to Device A.
Between two aggregations that contain devices that cross the aggregations.
In Vision client maps, a single link can actually represent multiple links—for example, a physical 
ethernet link and an MPLS link. Drill down into the link to get this information. These topics explain 
how to manage links using the Vision client:
Using Link Filters to Find Links, page 7-21
Interpreting Link Colors, Widths, and Symbols, page 7-21
Viewing Link Details, page 7-22
Checking the Impact of Link Problems (Impact Analysis), page 7-27
Managing Missing Links (Static Links), page 7-29 
						

							  
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Chapter 7      Viewing Devices, Links, and Services in Maps
  Viewing and Managing Links
Using Link Filters to Find Links
Use a link filter when you want to locate specific link types, such as physical links, VPN links, data links, 
and so forth. Sometimes it may not be clear if a link filter is already applied to a map. To verify whether 
a map is using a link filter, check the map toolbar. 
To create a link filter:
Step 1Click Link Filter in the main toolbar.
Step 2Select the specific links you want to view, or select a links group from the drop-down list.
Step 3Click Apply and OK. If any links are grey, it means you do not have sufficient permissions to view them. 
By default, the Vision client only displays a link if you have permission to view both of the link’s end 
points.
If you want to remove the filter later (and show all links), repeat the previous steps but choose All from 
the group drop-down list.
Step 4To interpret the information displayed by the Vision client, see Viewing Link Information Displayed at 
the Map Level (Tool Tips and Quick View), page 7-23.
Interpreting Link Colors, Widths, and Symbols
The following tables provide keys for understanding the link information displayed by the Vision client.
Link Colors:
A link filter is applied to the map. To clear the filter, click this icon and choose None from 
the Group drop-down list.
A link filter is not applied. To apply a link filter, see Using Link Filters to Find Links, 
page 7-21.
To display these links: Choose
Data links (ATM, Frame Relay) Data
Physical layer links Physical
VPN links (GRE, Pseudowire, VPN, VPN IPv6) VPN
Link types that you want to choose (your choices will be saved for 
the next time you open the link filter)Custom
All links All
Link has a critical alarm Red
Link has a major alarm Orange
Link has a minor alarm Yellow 
						

							  
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Chapter 7      Viewing Devices, Links, and Services in Maps
  Viewing and Managing Links
Solid or Dashed Link 4.3.2
Link Widths
Arrowheads
Viewing Link Details
These topics explain how to traverse from the map level down to the link property details:Link is operating normally Green
Link is selected Blue
Physical, topological, or service 
link, such as a link between two 
devices.Solid line
Association or business link 
between such elements as EVCs, 
VPLS service instances, or VPN 
components. Dashed line
Link represents multiple links of the 
same group (business, GRE, MPLS-TP, 
Pseudowire, VLAN, all others)Normal 
width
Line represents an aggregated link that 
contain links of different groups. 
Use high zoom level to view aggregated 
links.Wide 
width
Line represents a tunnel, with the center 
color representing the severity of any 
alarms on the link. Tunnel
Bidirectional link No arrowhead
Unidirectional link, with the flow in the 
direction of the arrowheadArrowhead 
						

							  
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Chapter 7      Viewing Devices, Links, and Services in Maps
  Viewing and Managing Links
Viewing Link Information Displayed at the Map Level (Tool Tips and Quick View), page 7-23
View Links at Different Levels in Aggregations and Maps (Links View), page 7-24
Viewing Link Status and Detailed Link Properties, page 7-25
Viewing Link Information Displayed at the Map Level (Tool Tips and Quick View)
To view the link count and end points, hover your mouse cursor over the link to display the link tool tip, 
as shown in the following figure.
Figure 7-12 Vision Client Window with Link Tooltip
To display the link quick view, click the tooltip. 
Figure 7-13 Link Quick View Example 
						

							  
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Chapter 7      Viewing Devices, Links, and Services in Maps
  Viewing and Managing Links
The link quick view in Figure 7-13 provides the following information.
View Links at Different Levels in Aggregations and Maps (Links View)
You can launch a links view from a map or from an aggregation thumbnail. When you open the links 
view, it shows links at the current level and for all nested aggregations (all links must have both endpoints 
in the map or aggregation). 
To open a links view, click Show Links View from the main toolbar. Figure 7-14 shows an example of 
the links view launched from a map view.
NoteIf some links are missing, your map may be using a link filter. To clear a link filter, click Link Filter, 
choose All from the group drop-down box (to display all links), and click Apply and OK.
Figure 7-14 Links View 
1Number of links represented by the single link in the map (in this example, 27  links).
2Link endpoints.
3List of all links represented by the link, including the link type, detail, and alarm status (color). 
This example shows 3 pseudowire links and one physical link. 
4Hyperlink to the link properties window. The Properties button is available for physical, 
topographical, and service links, but is not available for business links (dashed links). See Viewing 
Link Status and Detailed Link Properties, page 7-25. 
						

							  
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Chapter 7      Viewing Devices, Links, and Services in Maps
  Viewing and Managing Links
Note the following:
The context field may be empty if one side of the link is not included in the map, or the link is filtered 
out of all contexts. A blue background indicates an external link (a link with only one endpoint in 
the map or aggregation).
The A End-Point is the element or site that is the source of the link; The Z End-Point is the 
destination. For unidirectional links, traffic is from A to Z.
NoteIf you load a map with many links (for example, thousands of links), it can take a while for the complete 
list of links to load. The filtering options in the table are unavailable until the table has completely 
loaded. 
The links view provides buttons that allow you to traverse among link levels, as follows:
Viewing Link Status and Detailed Link Properties
To view link details, click the link (it will turn blue), then right-click the link and choose Properties. As 
shown in Figure 7-15, the link properties window provides general information about the selected link, 
details of the link connection, and technology-specific information appropriate for the link. If multiple 
links exist between the elements or aggregations, the link properties window displays information for all 
the links. 
Table 7-1 Ways to Traverse Link Levels
To do the following: Do the following, or click icon:
View a link in a map Right-click link and choose 
Select Link in Map (link will be 
blue)
View all link properties (see Viewing Link Status and Detailed 
Link Properties, page 7-25)Right-click link and choose 
Properties
Display all links the map or selected aggregation, including 
external links (All Links icon).
Display links that have only one side in the selected map or 
aggregation (External Links). (These are indicated with the blue 
background in the previous figure.)
Display links in the selected map or aggregation, excluding links 
in any closed aggregations (Flat Links).
Display for the selected aggregation and any nested aggregations 
with both endpoints in the map or aggregation (Deep Links). This 
is the default. 
						

							  
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Chapter 7      Viewing Devices, Links, and Services in Maps
  Viewing and Managing Links
Figure 7-15 Link Properties Window
The links listed on the left display the left and right link identifiers between the two nodes, the device 
alias, and the Connection Termination Point (CTP). When you select a link, the properties area is 
populated with extensive information about the selected link, most of which is self-explanatory. These 
items are especially important:
Under General Properties, the type can be either dynamic or static.
–Dynamic links are real links between devices or aggregations.
–Static links are not real links, but are created by Prime Network advanced users to represent a 
real link (for example, when a real link is not discovered). Static links provide allow Prime 
Network to perform correlation flows through the link.
Link status is displayed under the Connection Information.
Speed, port type, port admin and operational status, and other information is displayed for connections 
of types such as Ethernet CSMA/CD, Gigabit Ethernet, LAG, MLPPP, MP-BGP, MPLS Link 
Information, PPP, Pseudowire, T1, and VRF.
Users with advanced privileges can click Calculate Affected to see which resource pairs would be 
impacted by a problem with the link. (If the link had a ticket, the same information would be 
automatically generated and displayed in the ticket under the Affected Parties tab.) See Checking the 
Impact of Link Problems (Impact Analysis), page 7-27.