topic Re: CE550 Caching Engine help in Application Networking

CE550 Caching Engine help

marc.peladeau — Fri, 04 Jun 2004 13:45:02 GMT

Hello,

I've recently aquired two CE550s w/ software 2.51. I've configured them and brought them online for transparent web caching with WCCPv2. What I discovered was that although my border router sees both of them only one of the CEs fills up. The second CE drives spin and looks like it's working however when I do an "ls" the drives space doesn't decrease even when the first CE is full. Am I doing something wrong? Is this normal? Here are the results when I do a "show statistics http savings":

CE1#show statistics http savings

Statistics - Savings

Requests Bytes

-----------------------------------------------------------

Total: 3300596 37016027657

Miss: 2091648 31657752448

Savings: 36.2 % 14.2 %

CE1#ls

1999699968 bytes AVAILABLE ON VOLUME /c0t0d0s1

CE2#show statistics http savings

Statistics - Savings

Requests Bytes

-----------------------------------------------------------

Total: 3322804 33667417978

Miss: 2028372 27991510889

Savings: 38.6 % 16.5 %

CE2#ls

1442906112 bytes AVAILABLE ON VOLUME /c0t0d0s1

p.s. CE2 is not showing 0 bytes now because I reset the drives. At the current rate it will be full by tomorrow.

Any help would be appreciated.

Regards,

Marc

Re: CE550 Caching Engine help

jfoerster — Mon, 07 Jun 2004 07:46:53 GMT

Hi marc,

have you verified that the router distributes the requests to both CEs (can be seen by the hash value). the rouer does a HASH and normaly "loadbalances" the two CEs. So if only one certain page is accessed only one CE fills and the other stays empty.

Compare with http://www.cisco.com/en/US/partner/products/sw/iosswrel/ps1839/products_command_reference_chapter09186a008010a3fc.html#1018050

and search for show ip wccp detail

Kind regards,

Joerg

Re: CE550 Caching Engine help

marc.peladeau — Mon, 07 Jun 2004 12:26:45 GMT

Hi,

Thanks for your reply.

Yes I did verify that and the hash allotment for both of them are set to 50%. Both showing as usuable.

Marc

Re: CE550 Caching Engine help

jsharma — Mon, 07 Jun 2004 13:08:28 GMT

Hello Marc,

You may check the cfs statistics with

show cfs statistics

This will give you an indication of how much data is stored on the cfs volumes.

Cheers,

Jeevan