RPR State
Select any of the nodes and right-click. Click Show RPR Topo. The corresponding parameters for Ring Stability, Protection Mode, and Jumbo Preference are displayed.
 
Ring Stability
Shows whether the ring is stable or unstable, and identifies whether the ring is opened or closed.
Protection Mode
Indicates the protection mode:
Wrapping—Nodes adjacent to a failure immediately wrap traffic away from it. As a new ring topology is discovered, traffic paths might be reoptimized (nodes might steer on the ring they transmit traffic to, for a given destination).
Steering—All nodes in the ring are notified about a ring span failure. Each node updates the ring topology view and if necessary, changes the ring where it transmits traffic to a given destination.
Jumbo Preference
Indicates whether jumbo frames are permitted. If not, any frame larger than the currently permitted maximum transfer unit (MTU) size is discarded.
Refresh
Refreshes the RPR topology data.
Clear RPR Topology
Clears the RPR topology links and the Ring Stability, Protection Mode, and Jumbo Preference values.
Close
Closes the RPR Topology window.
Help
Displays context-sensitive help.

Copyright © 2002-2009, Cisco Systems, Inc. All rights reserved.