What kind of performance hit will I see on a Cat6506 running in pure IOS mode when I am exchanging full BGP routes with 2 ISPs and have policy routing enabled? Basically, what I'm interested in is will I have less latency by getting rid of the policy routing altogether and simply load-balancing between the two ISPs to which I'm dual homed? I understand that by utilizing policy routing, CEF & DCEF are not able to be used. With this in mind I assume that latency will likely increase. Is this true? and to what extent?
I would be extremely greatful to anyone who can offer me a little insight and/or a link to some thorough documentation or whitepapers on this.
Unfortunatly there is no "easy" answer to your question. It depends on many things, such as how much traffic is being policy routed. As you stated, policy routed traffic in not CEF switched and so there is a noticible performance hit. From your post it is not clear what you are policy routing... My suggestion is if you do not need to policy-route, don't. It makes configurations more complex and debugging much harder.
What I would suggest is turning off the policy routing and seeing how the latency (and CPU utilization!) changes.
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.