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Hello, Here is my network:
------------------
------------- ----------- Linux box ----------- GRE
--------- Cisco ----------
------------------
------------- What I wan to accomplish. I want ripv2 to go across
(both ways) through the GRE tunnel. No packets are being passed thought the GRE tunnel0. So
first I have to fix my GRE tunnel. Well it seems that way anyways. I also have
two questions at the below in bold. If you need anymore info please ask. I am using quagga and ripd daemons also. Quagga version - quagga-0.96.4-1.1 Kernal version - Linux 2.6.10 Mike This is how I configure my GRE tunnel: [root@TestLinux root]# modprobe ip_gre [root@TestLinux root]# ip tunnel add tunnel0 mode gre remote 20.0.0.250
local 20.0.0.249 [root@TestLinux root]# ip link set tunnel0 up [root@TestLinux root]# ip addr add 192.168.2.4/24 dev tunnel0 [root@TestLinux root]# ip route add 192.168.2.0/24 dev tunnel0 RTNETLINK answers: File exists [root@TestLinux root]# ip link set dev tunnel0 multicast on 1) I do not know what ‘RTNETLINK answers: File
exists‘ mean beside maybe that the route was automatically created.? I
created the route though the tunnel before and this message never came up
before. [root@TestLinux root]# ip addr ls 1: lo: <LOOPBACK,UP> mtu 16436 qdisc noqueue link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo 2: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc htb qlen 1000 link/ether 00:02:a5:df:01:d9 brd ff:ff:ff:ff:ff:ff inet 20.0.0.249/24 brd 20.0.0.255 scope global eth0 3: eth1: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc htb qlen 1000 link/ether 00:0d:88:2d:94:80 brd ff:ff:ff:ff:ff:ff inet 10.0.50.1/24 brd 10.0.50.255 scope global eth1 4: gre0: <NOARP> mtu 1476 qdisc noop link/gre 0.0.0.0 brd 0.0.0.0 5: tunnel0@NONE: <POINTOPOINT,MULTICAST,NOARP,UP> mtu 1476 qdisc
noqueue link/gre 20.0.0.249 peer 20.0.0.250 inet 192.168.2.4/24 scope global tunnel0 2) Where did ‘gre0’ come
from? This leads me to belive all of my traffic are going thought
this interface. zebra-TestLinux# show interface Interface eth0 is up, line protocol detection is disabled index 2 metric 1 mtu 1500 <UP,BROADCAST,RUNNING,MULTICAST> HWaddr: 00:02:a5:df:01:d9 inet 20.0.0.249/24 broadcast 20.0.0.255 input packets 13724, bytes 872184, dropped 0, multicast packets 0 input errors 0, length 0, overrun 0, CRC 0, frame 0, fifo 0, missed
0 output packets 19637, bytes 2395991, dropped 0 output errors 0, aborted 0, carrier 0, fifo 0, heartbeat 0, window
0 collisions 41 Interface eth1 is up, line protocol detection is disabled index 3 metric 1 mtu 1500 <UP,BROADCAST,MULTICAST> HWaddr: 00:0d:88:2d:94:80 inet 10.0.50.1/24 broadcast 10.0.50.255 input packets 0, bytes 0, dropped 0, multicast packets 0 input errors 0, length 0, overrun 0, CRC 0, frame 0, fifo 0, missed
0 output packets 13, bytes 828, dropped 0 output errors 0, aborted 0, carrier 0, fifo 0, heartbeat 0, window
0 collisions 0 Interface gre0 is down index 4 metric 1 mtu 1476 <NOARP> input packets 0, bytes 0, dropped 0, multicast packets 0 input errors 0, length 0, overrun 0, CRC 0, frame 0, fifo 0, missed
0 output packets 0, bytes 0, dropped 0 output errors 0, aborted 0, carrier 0, fifo 0, heartbeat 0, window
0 collisions 0 Interface lo is up, line protocol detection is disabled index 1 metric 1 mtu 16436 <UP,LOOPBACK,RUNNING> inet 127.0.0.1/8 input packets 2098, bytes 2234827, dropped 0, multicast packets 0 input errors 0, length 0, overrun 0, CRC 0, frame 0, fifo 0, missed
0 output packets 2098, bytes 2234827, dropped 0 output errors 0, aborted 0, carrier 0, fifo 0, heartbeat 0, window
0 collisions 0 Interface tunnel0 is up, line protocol detection is disabled index 5 metric 1 mtu 1476 <UP,POINTOPOINT,RUNNING,NOARP,MULTICAST> inet 192.168.2.4/24 pointopoint 192.168.2.4 input packets 0, bytes 0, dropped 0, multicast packets 0 input errors 0, length 0, overrun 0, CRC 0, frame 0, fifo 0, missed
0 output packets 0, bytes 0, dropped 0 output errors 0, aborted 0, carrier 0, fifo 0, heartbeat 0, window
0 collisions 0 rip-TestLinix# show ip rip Codes: R - RIP, C - connected, S - Static, O - OSPF, B - BGP Sub-codes: (n) - normal, (s) - static, (d) - default, (r) - redistribute, (i) - interface Network Next Hop Metric From Tag Time C(i) 10.0.50.0/24 0.0.0.0 1 self 0 C(i) 192.168.2.0/24
0.0.0.0 1 self 0 rip-TestLinix# show ip rip status Routing Protocol is "rip" Sending updates every 30 seconds with +/-50%, next due in 6 seconds Timeout after 180 seconds, garbage collect after 120 seconds Outgoing update filter list for all interface is not set Incoming update filter list for all interface is not set Default redistribution metric is 1 Redistributing: Default version control: send version 2, receive version 2 Interface Send Recv Key-chain eth1 2 2 tunnel0 2 2 Routing for Networks: 10.0.50.0/24 192.168.2.0/24 Routing Information Sources: Gateway BadPackets BadRoutes Distance Last Update Distance: (default is
120) [root@TestLinux root]# ip -s link ls
tunnel0 5: tunnel0@NONE: <POINTOPOINT,MULTICAST,NOARP,UP> mtu 1476 qdisc
noqueue link/gre 20.0.0.249 peer 20.0.0.250 RX: bytes packets errors dropped overrun mcast 672 8 0 0 0 0 TX: bytes packets errors dropped carrier collsns 864 8 0 0 0 0 |
