I am currently looking at a net that is experiencing loops due to STP failures. In looking at the core/dist configs (65xxs) Backbonefast is set but at the access layer (2950s) Backbonefast is not set. All recommendations I have seen is that Backbonefast should be set on *ALL* switches but I have not seen any risks for not following this recommendation. What is the risk of the config as I have described (in terms of uncontrolled loops) is it worth investigating this as a contributing problem?
If a new switch is introduced into a shared-medium topology, BackboneFast is not activated. The new switch begins sending inferior BPDUs that say it is the root switch. However, the other switches ignore these inferior BPDUs and the new switch learns that Switch B is the designated bridge to Switch A, the root switch. For more information, try this URL:
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.