Cisco 876 & CPU Load
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Posted by Marco Buchholz on September 4, 2008, 6:13 am
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Hello at all, i´ve a problem with the cisco 876 integrated services router. The router´s ios-version is 12.4(11)T4 and it has a ADSL2+ (16 Mbit downstream / 1 Mbit upstream) connection. If i start a download via http (or any other protocol), the cpu load still remains at 100% until the download ends ... Are there any solutions for this problem or has anybody the same problems with this router. I´ve tried other ios-images, but the problem is still the same. Greetz, Marco | ||||||||||||||||
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Posted by News Reader on September 4, 2008, 11:03 am
Please log in for more thread options Marco Buchholz wrote:  you were using process switching). Have you enabled CEF globally, and Fast Switching on the interfaces? e.g.: ip cef interface FastEthernet0 ip route-cache flow If the problem relates to your choice of switching paths, you might search for documents with the following titles on the Cisco web site: - How to Choose the Best Router Switching Path for Your Network - Performance Tuning Basics Best Regards, News Reader | ||||||||||||||||
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Posted by Uli Link on September 9, 2008, 3:20 am
Please log in for more thread options Marco Buchholz schrieb: Try IOS 12.4(6)T11 or 12.4(9)T7 instead. There was a 30 percent CPU usage increase for the 870 routers with 12.4(11)T according to <http://www.cisco.com/en/US/docs/ios/12_4t/release/notes/124TFEAT.html#wp1533957> Disable the IPS feature. Try to disable the http inspection rule and use the generic tcp inspection instead if looking for less CPU usage. Also 12.4(15)T6 is worth a trial (I don't use the newer T7, as I found serious tracebacks in the T7 rebuild) -- ULi | ||||||||||||||||
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>
> i´ve a problem with the cisco 876 integrated services router.
> The router´s ios-version is 12.4(11)T4 and it has a ADSL2+ (16 Mbit
> downstream / 1 Mbit upstream) connection.
>
> If i start a download via http (or any other protocol), the cpu load
> still remains at 100% until the download ends ...
>
> Are there any solutions for this problem or has anybody the same
> problems with this router. I´ve tried other ios-images, but the problem
> is still the same.
>
> Greetz, Marco