We are looking to introduce Cisco WAAS to our WAN environment but I have heard from a colleague that he had experienced performance degradation (over time) through similar technologiesâ¦here's why:
Given that encrypted files (.pgp extensions, etc) will not optimize through the cache (though they will improve via TFO), the more files we send that are encrypted (and they will be sent, over time), the more the cache could bloat with 'unique' data packets (data which, by its very nature will not likely be repeated).
So the question is, how is data purged from the cache over time through infrequent use, so that we don't hit a wall after a few months, and are left only with the benefits of TFO and application protocol optimization. (ie... every data transfer acting as though it was a first time transfer - improved, but not optimized).
I haven't worked with Cisco WAAS, but on other products this issue might be addressed both by cache management replacement policy and/or traffic processing configuration. E.g., for the former, some kind of least-frequently-used policy often purges the "dead wood", for the latter, informing the device not to even cache certain traffic types works even better.
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.