Re: [squid-users] More WCCP woes

All,

I hope that WCCP is still hot topic to be discussed. Most of us got
different symptoms. I made an assumption that may be wrong, please correct
me.

1. Vishwanath Paranjape could get "Here_I_Am" packet but still cannot
redirecting HTTP to Squid
2. Jorge Boncompte seems solve the problem by using IP GRE.
3. Curtis Hays even could not connected his Squid to Router through WCCP
4. I could connect Squid to Router without getting "Here_I_Am" packet and
still cannot redirecting HTTP to Squid.

I am very curious about this problem. Frankly, I am sure that suggestion /
sample from Jan Haluza and Al Blake is very helpful. Unfortunately, we need
more luck to solve the redirection problem.

Now, I am waiting Cisco staff checking my IOS (version 12.0(7)T) about
possibility of bugs to support WCCPv1. If it is negative, I must suspect the
WCCP tunneling (UDP port 2048, isn't it?), that I am really blind what I
should do.

Thx & rgds,

Awie

----- Original Message -----
From: "Sixx Lim" <sixx@swiftech.net.sg>
To: <squid-users@ircache.net>
Sent: Wednesday, March 14, 2001 2:39 PM
Subject: Re: [squid-users] More WCCP woes

> IMHO, i think the main issue here would be why doesn't squid "talk" WCCP
to
> the router, be it you
> are using GRE or not.
>
> At 18:31 01/03/13 -0600, you wrote:
> >Try using the ip_wccp module...it seems easier to make it work in most
> >cases (though I've never had a problem getting the patched GRE module to
> >work either--you did patch your ip_gre module, didn't you?).
> >
> >I've converted it into a kernel patch that applies cleanly to 2.2.18, and
> >can be configured at compile time as a module. Then it's just a modprobe
> >away from working. No messing about with creating a gre interface.
> >
> >The patch is here:
> >
> >http://www.swelltech.com/pengies/joe/patches/
> >
> >It's the last link on the page.
> >
> >Also, you asked how the router knows about the cache...it isn't a
> >broadcast protocol, the Squid announces itself to the router (because
> >you've configured the router in the wccp_router directive) with a
> >"HERE_I_AM" packet, which the router responds to with a "I_SEE_YOU"
> >packet. The GRE encapsulation is then used to send the packets to the
> >Squid box, which then get decapsulated by the OS.
> >
> >Hope this helps.
> >
> >Curtis E. Hays II wrote:
> >
> >>Apparently I'm not trying enough to get wccp working.... any help would
be
> >>appreciated.. here are my current non-working configs...
> >>
> >>Cisco router config:
> >>ip subnet-zero
> >>ip wccp version 1
> >>ip wccp web-cache
> >>!
> >>!
> >>!
> >>!
> >>interface FastEthernet0/0
> >> ip address 172.17.104.52 255.255.255.0
> >> ip broadcast-address 172.17.104.255
> >> ip wccp web-cache redirect out
> >> duplex auto
> >> speed auto
> >>!
> >>(relevant parts)
> >>running ios: IOS (tm) 3600 Software (C3640-I-M), Version 12.1(1)T,
> >>RELEASE
> >>SOFTWARE (fc1)
> >>I've compiled my Linux kernel ver 2.2.18 with the ip_wccp.c patch... I'm
> >>running squid 2.4PRESTABLE2 in http accel mode... I've got a windows box
> >>with a default gw of the cisco router and the squid on the same segment.
> >>The cisco config doesn't show any way to communicate with the squid i.e.
> >>you
> >>don't configure an IP??? is it a broadcast protocol that they are
> >>supposed
> >>to see each other? The cisco doesn't show it:
> >>wccp-rtr#sh ip wccp
> >>Global WCCP information:
> >> Router information:
> >> Router Identifier: 172.17.104.52
> >> Protocol Version: 1.0
> >> Service Identifier: web-cache
> >> Number of Cache Engines: 0
> >> Number of routers: 1
> >> Total Packets Redirected: 0
> >> Redirect access-list: -none-
> >> Total Packets Denied Redirect: 0
> >> Total Packets Unassigned: 0
> >> Group access-list: -none-
> >> Total Messages Denied to Group: 0
> >> Total Authentication failures: 0
> >>I've got IPCHAINS configured on the linux box to redirect port 80
> >>traffic to
> >>port 3128, but it doesn't look like the cisco even sees the wccp enabled
> >>linux box/squid....
> >>I didn't get the mention of configuring a GRE tunnel on the Linux box,
> >>so I
> >>configured a GRE tunnel up... no ip or anything... just up... then with
> >>an
> >>IP on the same network. using :
> >>
> >> iptunnel add gre1 mode gre remote <Router-IP> local <Host-IP>
> >>dev
> >><interface>
> >> ifconfig gre1 127.0.0.2 up
> >> still didn't see anything on the cisco when doing 'sh ip wccp'
> >>so I tried building the other end of the gre tunnel on the cisco with :
> >>interface Tunnel0
> >> ip address 1.1.1.1 255.255.255.0
> >> ip broadcast-address 1.1.1.255
> >> tunnel source FastEthernet0/0
> >> tunnel destination 172.17.104.132
> >>nothing working yet :(
> >>so I tried this:
> >>interface Tunnel0
> >> ip address 1.1.1.1 255.255.255.0
> >> ip broadcast-address 1.1.1.255
> >> tunnel source FastEthernet0/0
> >> tunnel mode ipip decapsulate-any
> >>Still no cache engine showing up with 'sh ip wccp' on the router.
> >>ANY help would be appreciated... I've been goveling over the mailing
> >>list
> >>archives and can't seem to find the question or answer previously
> >>answered.
> >>Thanks,
> >>Curtis Hays
> >
> > --
> > Joe Cooper <joe@swelltech.com>
> > Affordable Web Caching Proxy Appliances
> > http://www.swelltech.com
>
Received on Wed Mar 14 2001 - 11:52:17 MST