It seems that you have not create GRE tunnel successfully. You can try this:
# ifconfig gre0 create
# ifconfig gre0 link0 tunnel squid_host_IP router_IP up
where:
router_IP is IP address of routers physical interface (not loopback interface)
Besides, I noticed that with IOS 12.x, if you enable CEF(Cisco Express
Forwarding) for the interface which redirects the packets, something
weird will happen. Sometimes no packets redirect to your squid box at
all, sometimes only truncated or fragmented GRE packets arriving at
the cache. Apparently it works if you disable Cisco Express Forwarding
for the interface:
conf t
ip cef # some systems may already have 'ip cef global'
int Ethernet 0/0 (or int FastEthernet 0/0 or other internal interface)
no ip route-cache cef
CTRL Z
Regards,
Bin
Received on Thu Apr 07 2005 - 02:56:38 MDT
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