* You want to use L2, not GRE, on the Sup720 * .. this requires L2 adjacency, and no GRE tunnel * You also want to use Mask, not Hash assignment. So please, please don't use GRE with a Sup720. Adrian On Mon, Mar 24, 2008, Ritter, Nicholas wrote: > I am having an adjacency issue with Cisco devices, WCCP v2 and > Linux-based squid 2.6. > > I am running a CentOS 5.1 box with the packaged Squid that comes with > the ditribution. If I have a router redirecting to the squid box, and > the squid box has a GRE tunnel setup to point to the "show ip wccp" > advertised IP, the whole setup does not work. The moment I make the > squid box layer2/layer3 adjacent to the "show ip wccp" advertised IP the > whole setup works fine. > > I am allowing all GRE traffic, so I know it is not a firewalling issue, > but I do notice that the linux box is not using the GRE tunnel because > ifconfig shows no increase in packet counts. > > The commands I am using are as follows, and this is for WCCP/Transparent > caching: > > **Note: the local ip of the squid box is 10.2.2.31, and 192.168.1.1 is > the IP of the WCCP router. 192.168.1.1 is a Cat6506/Sup720, and > 192.168.1.1 is a router link on that switch, 10.2.2.0/24 is a vlan with > a router link on it, all on the same switch. > > /sbin/ip tunnel add gre0 mode gre remote 192.168.1.1 local 10.2.2.31 dev > eth0 > /sbin/ip addr add 10.2.2.31/32 dev gre0 > /bin/echo 0 > /proc/sys/net/ipv4/conf/gre0/rp_filter > /sbin/ip link set gre0 up > /sbin/service squid start > > > The WCCP router does not register the squid cache as being there, but a > "debug ip wccp" shows the two talking to each other. This issue, in > general, has been a problem on mulitple IOS versions, but I think it may > be something wrong with the gre tunnel setup on the Linux box. > > Anyone have ideas as to what I may be doing wrong? > > Nick -- - Xenion - http://www.xenion.com.au/ - VPS Hosting - Commercial Squid Support - - $25/pm entry-level VPSes w/ capped bandwidth charges available in WA -
