[Xorp-users] Dropping packet from foreign network message???

[John Clark]

I'm just setting up xorp to do OSPF and BGP routing protocols. Since I 
don't have an intimate knowledge
of the XORP configuration setup, I seem to be getting the above message 
on the machines that I've configured
for a single area ospf network.

Four machines are connected via 3 point-to-point links, and each of the 
machines have an ethernet connection to
their 'local' ethernet network.

The foreign packet dropped message appears to be a packet from point to 
point link partners.


Thanks for any assistence,

John Clark.



A schematic:
---------------------------------------------

                             CPU 1 -----------(192.168.2.2)
                                 |
                                 |
                         (10.10.0.2)
                                 |
                                 |
                         (10.10.0.1)
                                 |
                                 |

(192.168.4.2) ----- CPU 2 ----- (10.11.0.1)   <---------> (10.11.0.2) 
----- CPU 3 ----- (192.168.6.2)
                                  |
                                  |
                          (10.12.0.1)
                                  |
                                  |
                         (10.12.0.2)
                                  |
                             CPU 4 ----------- (192.168.8.2)


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

So on any given CPU I see this message for the arm of the p-to-p links 
indicating a foreign packet has been received and dropped.

For example, CPU 4 reports dropped packets for foreign network entity 
10.10.0.1, and similarly on CPU 3
reporting foreign packets from 10.11.0.1

And CPU 2 reports all xx.xx.xx.2 packet dropped.

Here is the config for CPU 2 and one of the others.
--------------------------------------------------------------------------------------------------------
/* $XORP: xorp/rtrmgr/config/interfaces.boot,v 1.1 2007/08/30 06:32:17 
pavlin Exp $ */

interfaces {
    interface eth5 {
    default-system-config
    }
    interface wp1chdl {
    /* Use the default setup as configured in the system */
    default-system-config
    }
    interface wp2chdl {
    /* Use the default setup as configured in the system */
    default-system-config
    }
    interface wp3chdl {
    /* Use the default setup as configured in the system */
    default-system-config
    }
}

protocols {
    ospf4 {
        router-id: 10.10.0.1
        area 0.0.0.51 {
            interface eth5 {
                vif eth5 {
                    address 192.168.4.2 {
                    disable: false
                    }
                }
            }
            interface wp1chdl {
                vif wp1chdl {
                    address 10.10.0.1 {
                    disable: false
                    }
                }
            }
            interface wp2chdl {
                vif wp2chdl {
                    address 10.11.0.1 {
                    disable: false
                    }
                }
            }
            interface wp3chdl {
                vif wp3chdl {
                    address 10.12.0.1 {
                    disable: false
                    }
                }
            }
        }
    }
}
--------------------------------------------------------------------

Here is the config.boot for CPU 3

--------------------------------------------------------------------
/* $XORP: xorp/rtrmgr/config/interfaces.boot,v 1.1 2007/08/30 06:32:17 
pavlin Exp $ */

interfaces {
    interface eth5 {
    default-system-config
    }
    interface wp1chdl {
    /* Use the default setup as configured in the system */
    default-system-config
    }
}

protocols {
    ospf4 {
        router-id 10.11.0.2
        area 0.0.0.51 {
            interface eth5 {
                vif eth5 {
                    address 192.168.6.2 {
                    disable: false
                    }
                }
            }
            interface wp1chdl {
                vif wp1chdl {
                    address 10.11.0.2 {
                    disable: false
                    }
                }
            }
        }
    }
}