08-22-2001 06:04 PM - edited 03-01-2019 06:45 PM
Im trying to catch data from the internet with a Sun T1 with Inktomi as the caching software, it works with WCCP2 and the connecction is via a 2600 router with the wccp2 enabled and the redirect out in the interfece directly connected to the internet enabled too.
Some web pages download ok but, the problem comes when I try to access pages where I must provide a user and a password, the page never downloads.
Does anybody knows about a problem between the cisco wccp2 implementation and a third part cache boxes?
08-23-2001 03:26 AM
Hi Luis,
What release of IOS are you running on the 2600 router?
Unfortunately, some IOS releases have some bugs that _may_ be causing compatability issues.
As a general guideline, if you're on the latest 12.0T release (12.0(7)T), the latest 12.1 mainline release or the latest non-deferred 12.1T release, there shouldn't be any problem in IOS with relation to WCCP.
I'd suggest that you contact Inktomi.
If its "all sites" with authentication (even cisco's web-site), then its definitely an Inktomi bug.
Site-Note:
We actually know of a few bugs that they have had in the past, and this sounds like a possible side-effect of one of them (an issue related to the fact that WCCP can use a GRE tunnel to send packets from the router to the cache, thereby reducing the effective MTU, yet in their TCP 3-way handshake they don't set a smaller MSS which means that any fragmentation of large packets will cause things to break).
08-23-2001 04:27 PM
I have the Cisco IOS(tm) C2600 Software (C2600-IS-M), Version 12.1(3a), RELEASE SOFTWARE (fc1)
ROM: System Bootstrap, Version 12.1(3r)T2, RELEASE SOFTWARE (fc1)
System image file is "flash:c2600-is-mz.121-3a"
cisco 2621 (MPC860) processor (revision 0x200) with 39936K/9216K bytes of memory in my Cisco 2621
and this is the result of the show wccp commands:
Enterprise#sh ip wccp
Global WCCP information:
Router information:
Router Identifier: 192.168.20.2
Protocol Version: 2.0
Service Identifier: 0
Number of Cache Engines: 1
Number of routers: 1
Total Packets Redirected: 89607
Redirect access-list: -none-
Total Packets Denied Redirect: 0
Total Packets Unassigned: 4
Group access-list: -none-
Total Messages Denied to Group: 0
Total Authentication failures: 0
Enterprise#sh ip wccp 0 detail
WCCP Cache-Engine information:
IP Address: 192.168.20.5
Protocol Version: 2.0
State: Usable
Initial Hash Info: 00000000000000000000000000000000
00000000000000000000000000000000
Assigned Hash Info: FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Hash Allotment: 256 (100.00%)
Packets Redirected: 73836
Connect Time: 1d04h
what tells me that the router is redirecting packets to the caching box. Even Im thinking about placing a sniffer {in a port of the same vlan with span enabled} to see what happend when the request is done.
So I do I have a correct version of the IOS???
Thanks again
08-23-2001 05:46 PM
Hi Luis,
in order to rule out any possibility of it being a previously-known-and-fixed IOS bug, i'd suggest that you upgrade this c2600 router from 12.1(3a) to 12.1(10).
you should be able to download this from:
if the problem still persists after this, then i'd suggest you contact Inktomi support.
cheers,
lincoln.
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