[Xorp-users] Multicast Routing over gif0 tunnel in FreeBSD 8.0

[qmail at top-consulting.net]

I'm trying to configure Xorp 1.6 on FreebSD 8.0 to route multicast  
packets between two networks.

The Xorp box is directly connected to the client over bge0 and to a  
Cisco router over a gif0 tunnel.

ifconfigs are:

bge0:  
flags=8b43<UP,BROADCAST,RUNNING,PROMISC,ALLMULTI,SIMPLEX,MULTICAST>  
metric 0 mtu 1500
         options=9b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM>
         ether 00:00:1a:1a:6e:1a
         inet 172.31.2.1 netmask 0xffffff00 broadcast 172.31.2.255
         media: Ethernet autoselect (100baseTX <full-duplex>)
         status: active


gif0: flags=8251<UP,POINTOPOINT,RUNNING,ALLMULTI,MULTICAST> metric 0 mtu 1500
         tunnel inet 216.X.X.X --> 70.X.X.X
         inet 172.31.1.2 --> 172.31.1.255 netmask 0xffffff00
         options=1<ACCEPT_REV_ETHIP_VER>


The configuration file is this:
interfaces {
     restore-original-config-on-shutdown: false
     interface bge0 {
         description: "data interface"
         disable: false
         /* default-system-config */
         vif bge0 {
             disable: false
             address 172.31.2.1 {
                 prefix-length: 24
                 broadcast: 172.31.2.255
                 disable: false
             }
         }
     }

     interface gif0 {
         description: "data interface"
         disable: false
         /* default-system-config */
         vif gif0 {
             disable: false
             address 172.31.1.2 {
                 prefix-length: 24
                 multicast-capable:true
                 disable: false
                 broadcast: 172.31.1.255
             }
         }
     }
}

fea {
     unicast-forwarding4 {
         disable: false
     }

     unicast-forwarding6 {
         disable: false
     }
}

plumbing {
     mfea4 {
         disable: false
         interface bge0 {
             vif bge0 {
                 disable: false
             }
         }

         interface gif0 {
             vif gif0 {
                 disable: false
             }
         }

         interface register_vif {
             vif register_vif {
                 /* Note: this vif should be always enabled */
                 disable: false
             }
         }
         traceoptions {
             flag all {
                 disable: false
             }
         }
     }
}

protocols {

     static {
         route 10.16.0.0/16 {
             next-hop: 172.31.1.1
             metric: 1
         }

         mrib-route 10.16.0.0/16 {
             next-hop: 172.31.1.1
             metric: 1
         }

         route 10.253.248.0/24 {
             next-hop: 172.31.1.1
             metric: 1
         }

         mrib-route 10.253.248.0/24 {
             next-hop: 172.31.1.1
             metric: 1
         }

     }

     igmp {
         disable: false
         interface bge0 {
             vif bge0 {
                 disable: false
             }
         }

         interface gif0 {
             vif gif0 {
                 disable: false
             }
         }

         traceoptions {
             flag all {
                 disable: false
             }
         }
     }

     pimsm4 {
         disable: false
         interface bge0 {
             vif bge0 {
                 disable: false
             }
         }

         interface gif0 {
             vif gif0 {
                 disable: false
             }
         }

         interface register_vif {
             vif register_vif {
                 /* Note: this vif should be always enabled */
                 disable: false
             }
         }

         static-rps {
             rp 10.16.0.64{
                 group-prefix 224.0.0.0/4 {
                     /* rp-priority: 192 */
                     /* hash-mask-len: 30 */
                 }
             }
         }

         switch-to-spt-threshold {
             /* approx. 1K bytes/s (10Kbps) threshold */
             disable: false
             interval: 100
             bytes: 102400
         }

         traceoptions {
             flag all {
                 disable: false
             }
         }
     }

     fib2mrib {
         disable: false
     }
}


show igmp group
Interface    Group           Source          LastReported Timeout V State
bge0         224.0.0.2       0.0.0.0         172.31.2.1       216 2     E
bge0         224.0.0.22      0.0.0.0         172.31.2.1       215 2     E
gif0         224.0.0.2       0.0.0.0         172.31.1.2       215 2     E
gif0         224.0.0.22      0.0.0.0         172.31.1.2       216 2     E


show pim join
Group           Source          RP              Flags

show pim neighbors
Interface    DRpriority NeighborAddr    V Mode   Holdtime Timeout
gif0                  1 172.31.1.1      2 Sparse      105      97

show pim rps
RP              Type      Pri Holdtime Timeout ActiveGroups GroupPrefix
10.16.0.64      static    192       -1      -1            0 224.0.0.0/4


Is there anything that I am missing or doing wrong ?

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