I am an isp using 3640.I have frame relay subinterfaces.Some of them are in bridge groups.A bridge group is dedicated to only 1 interface.I noticed that when customers configured with bridge groups are active and getting much traffic,the processing of the router increases and this appears in the IP INPUT process.I am using cef and fast switching.For serial interfaces without BVI interfaces,a part of the output of the command "show interface stats" is almostly as follows :
Switching path Pkts In Chars In
Processor 5830 11402
Route cache 36051 49785
Total 11881 31187
Which shows that the cache is used in forwarding many packets while for bvi interfaces,the output is as follows:
Switching path Pkts In Chars In Pkts Out Chars Out
Processor 19410142 399036124
Route cache 0 0
Total 19410142 399036124
Which shows that the cache is not used at all for BVIs.And I think this may be the reason of high processing.does any one have any suggestion to solve this problem.I think I can disable cef to force the interface to use fast switching.Does anyone has any suggestion
Thanks for your response.My IOS version is 12.2(17a).
I think my router is neither performing cef nor fast switching because as soon as the BVIs carry more traffic ,the processing increase.But what is amazing is that one active BVI increases cpu processing by about 20%.
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.