Preventing-STP-Forwarding-Loops.ppt

Slide Title,Body Text,Second Level,Third Level,Fourth Level,Fifth Level,Cisco Network Academy.All rights reserved.,.,CCNP+BSMSN v3.0,Minimizing Service Loss and Data Theft in a Campus Network,Preventing STP Forwarding Loops,Unidirectional Link Failure,Loop Guard,Root,Before Loop Guard,Root,With Loop Guard,Resetting and Verifying UDLD,Switch#udld reset,Resets all interfaces that have been shut down by UDLD,Switch#show udld,interface,Displays UDLD information for a specific interface,Configuring Loop Guard,Summary,UDLD detects and disables an interface with unidirectional connectivity,protecting the network from anomalous STP conditions.,Loop guard detects and disables an interface with Layer 2 unidirectional connectivity,protecting the network from anomalous STP conditions.,UDLD and loop guard are configured and verified using specific commands.,Implementation of UDLD and loop guard protects spanning tree operations from being disrupted due to unidirectional links.,