I would like to know the impact of Policy Base Routing configured on the data center nexus 7000. In our scenario, PBR used to switch traffic to ASA firewall, Loadbalance and external router based on the src-dst IP. I have learnt it from Cisco_Live presentation that PBR is implemented on Forwarding Engine hardware.
In our scenario we have over 200 interfaces (mostly SVI) where policy base routing need to be comfigured. So my question is, does it impact the performance of nexus 7k ?
PBR is done in hardware for all M and F series cards, so you should not see any performance degradation. It was covered off in the Cisco Live 2013 Nexus 7000 Switch Architecture session BRKARC-3470.
Your limitation would be around TCAM sizing for ACLs used to make PBR decisions. The N7k in default configuration is limited to 16,000 entries per feature as each ACL feature uses a single TCAM bank only. There is a process to do TCAM bank chaining if 16,000 ACLs isnt enough - http://www.cisco.com/c/en/us/support/docs/routers/7000-series-routers/116151-problemsolution-product-00.html
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.