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Chapter 18      Managing Carrier Ethernet Configurations
  Working with VLANs
Figure 18-33 Links Between VLAN Elements and Devices
The key point is that a link between a VNE and EFP, switching entity, or network VLAN does not 
represent an association between the VNE and the logical element. Such a link is simply another view 
of the VLAN link.
If the thumbnail view is closed, instead of a link between the VNE and EFP, you will see a link between 
the VNE and...

  
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Chapter 18      Managing Carrier Ethernet Configurations
  Working with VLANs
The VLAN overlay is a snapshot of the network to help you visualize the network elements and links 
connected to a VLAN. The overlay displays STP and REP link and port information.
If you select a network VLAN that is associated with other VLANs, the associated VLANs are included 
in the overlay. 
The VLAN service overlay allows you to isolate the parts of a network that are being...

  
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Chapter 18      Managing Carrier Ethernet Configurations
  Working with VLANs
Figure 18-34 VLAN Overlay Example
NoteThe overlay is a snapshot taken at a specific point in time. As a result, the information in the overlay 
might become stale. To update the overlay, click Refresh the Last Selected Overlay in the toolbar.
The VLAN overlay service also supports multi-chassis devices. If a network element in the overlay is 
dimmed, then all the hosts of the...

  
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Chapter 18      Managing Carrier Ethernet Configurations
  Working with VLANs
Viewing VLAN Service Link Properties
See the following topics for information on viewing VLAN service link properties:
Viewing REP Properties for VLAN Service Links, page 18-81
Viewing STP Properties for VLAN Service Links, page 18-84
Viewing Associated Network VLAN Service Links and VLAN Mapping Properties, page 18-74
Viewing REP Information in VLAN Domain Views and VLAN Overlays...

  
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Chapter 18      Managing Carrier Ethernet Configurations
  Working with VLANs
Viewing REP Properties for VLAN Service Links
To view REP properties for a VLAN service link, open the Link Properties window in either of the 
following ways: 
Double-click the VLAN service link.
Right-click the VLAN service link, and choose Properties. 
Figure 18-35 shows an example of the Link Properties window with REP information. Multiple links with badges 
icon—Indicates that...

  
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Chapter 18      Managing Carrier Ethernet Configurations
  Working with VLANs
Figure 18-35 VLAN Service Link Properties Window with REP Information 
Table 18-36 describes the information that is displayed for REP for each end of the link.
Table 18-36 REP Properties in VLAN Service Link Properties Window
Field Description
Segment ID REP segment identifier.
Port Type Port type: Primary Edge, Secondary Edge, or Intermediate. 
Port Role Role or state of the REP...

  
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Chapter 18      Managing Carrier Ethernet Configurations
  Working with VLANs
Viewing STP Information in VLAN Domain Views and VLAN Overlays
You can view STP segment and port information in the Vision client in the map view. The icons 
displayed depend on whether you view the STP information in the VLAN domain view or in a VLAN 
overlay. Table 18-37 describes the icons and badges used to represent STP link and port information.
To view additional STP...

  
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Chapter 18      Managing Carrier Ethernet Configurations
  Working with VLANs
Viewing STP Properties for VLAN Service Links
To view STP properties for a VLAN service link, open the Link Properties window in one of the 
following ways: 
Double-click the VLAN service link.
Right-click the VLAN service link, and choose Properties. 
Figure 18-37 shows an example of the Link Properties window with STP information. 
Figure 18-37 STP Properties in VLAN Service Link...

  
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Chapter 18      Managing Carrier Ethernet Configurations
  Working with VLANs
Viewing VLAN Trunk Group Properties
VTP is a Layer 2 multicast messaging protocol that manages the addition, deletion, and renaming of 
VLANs on a switched network-wide basis. 
The Vision client displays VTP information in the logical inventory. VTP information is shown only for 
Cisco devices that support VTP, and support is provided only for VTP Version 1 and 2. Support for...

  
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  Working with VLANs
Table 18-39 describes the information that is displayed in the VTP Domain Properties window. 
Step 3To view the VTP properties at the device, double-click the VTP domain. 
Table 18-40 describes the VTP information that is displayed in the inventory window content pane. 
Table 18-39 VTP Domain Properties Window
Field Description
Managed Element Managed element name, hyperlinked to...