Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Topology view confused with router sub-interfaces

Installed a demo of LMS 2.5 for client and found that Topology Services acts a bit strange when routers are using sub-interfaces.

The Layer2 view will show the connection between the switch and the router, as well as a phantom link from the router to nowhere.

The Layer 3 view will corectly show all the switches and other devices in a group as connected except the router.

This only occurs when the router is using ethernet sub-interfaces.

Any idea's why this happens?


Re: Topology view confused with router sub-interfaces

Network Views displays the following:

LAN Edge ViewDisplays hierarchical network view of network connectivity at Layer 3, all devices that have routing characteristics are displayed. Devices without Layer 3 connectivity are placed in a sub-view.

Layer 2 ViewDisplays the Layer 2 information about your network, including ATM and LAN switches, routers, MLS devices, hubs, and switch probes.

VTP ViewsDisplays devices that are participating in VLANs, including LANE components.

Unconnected Devices ViewDisplays devices for which connectivity information could not be obtained, including devices which are not supported by Topology Services.