Cisco 876 & CPU Load

Cisco 876 & CPU Load

NewsGroups | Search | Tools
 comp.dcom.sys.cisco  Post an article  get this group's latest topics as an RSS feed add this group's latest topics to your My MSN content add this group's latest topics to your My Yahoo content  add this group's latest topics to your Google content  YahooMyWeb Yahoo!  Google Google  Windows Live Favorites Windows Live  del.icio.us del.icio.us  digg digg  Add to Netscape Netscape
Subject Author Date
Cisco 876 & CPU Load Marco Buchholz 09-04-2008
Posted by Marco Buchholz on September 4, 2008, 6:13 am
If you were  Registered and logged in, you could reply and use other advanced thread options


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

Spring Sale Save 20% Banner - Sale Ended 5/3/07 So Updated to NonPromo Ad
Posted by News Reader on September 4, 2008, 11:03 am
If you were  Registered and logged in, you could reply and use other advanced thread options


Marco Buchholz wrote:
> 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

Perhaps this relates to your choice of switching paths (particularly if
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

Posted by Uli Link on September 9, 2008, 3:20 am
If you were  Registered and logged in, you could reply and use other advanced thread options


Marco Buchholz schrieb:
> 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.
>
> 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.

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

Similar ThreadsPosted
Load Balancing / Load Sharing over parallel paths November 21, 2005, 9:14 am
Cisco for load balancing w/o BGP October 11, 2006, 12:14 pm
High CPU load on Cisco 2600 February 18, 2005, 9:43 am
server load balancing using a cisco July 14, 2005, 9:34 am
High CPU load on Cisco 877 and 878 while downloading November 12, 2006, 11:17 am
Load Balance with Cisco ISR 1801 December 5, 2007, 5:45 pm
Cisco 1760 boot: cannot load "flash:" June 9, 2005, 6:29 am
Unable to load Cisco 350AP Firmware June 21, 2006, 7:05 pm
configure cisco load balancing with daul isp May 20, 2007, 6:46 am
[Cisco ISR 1800] Load Balance over two xDSL November 20, 2007, 6:11 pm

other useful resources:
The Federal Communications Commission (FCC)
Telecommunications Industry Association
Electronic and Software Security Products and Services
International Telecommunication Union

Custom CGI Perl and PHP programming by 1-Script.com

Contact Us | Privacy Policy
The site map in XML format XML site map