[ovs-discuss] documentation about setting up GRE tunnel

[benzwt benzwt]

Dear openvswitch developers,

we have 2 hosts, host1 is 192.168.100.1 the other is host2 192.168.200.2

host1 has a vm 10.10.10.1
host2 has a vm 10.10.10.3
between host1 and host2, I use quagga as a router(PC).
I can ping 192.168.100.1 from 192.168.200.2, also can ping
192.168.200.2 from 192.168.100.1

I set the GRE tunnel as followings:
*********************************************************************************************
on both hosts
     a. rmmod bridge and insmod ovs module
     b. start ovs
     c. add br0 , add eth0 into br0  ( I found that after add eth0, I
can't do step 1.)
     d. add tap0 into br0

1. ovs-vsctl add-port br0 gre0 -- set interface gre0 type=gre
options:remote_ip=192.168.100.1 ( on host2)
2. ovs-vsctl add-port br0 gre0 -- set interface gre0 type=gre
options:remote_ip=192.168.200.2 ( on host1)
*********************************************************************************************

Finally I can't ping host2's vm 10.10.10.3 from host1's vm 10.10.10.1
or ping host1's vm 10.10.10.3 from host1's vm 10.10.10.1

If I connect these hosts in on a switch(physical) without going
through a router(PC), I can ping host2's vm 10.10.10.3 from host1's vm
10.10.10.1 or ping host1's vm 10.10.10.3 from host1's vm 10.10.10.1
Is anything steps that I have missed ?

the ovs-ofctl show on host1:
 root at panda109:~# ovs-ofctl show br0
OFPT_FEATURES_REPLY (xid=0x1): ver:0x1, dpid:000000bc305bbe9354
n_tables:2, n_buffers:256
features: capabilities:0x87, actions:0xfff
 1(eth0): addr:c6:b3:af:1d:4b:02, config: 0, state:0
     current:    1GB-FD COPPER AUTO_NEG
     advertised: 10MB-HD 10MB-FD 100MB-HD 100MB-FD 1GB-HD 1GB-FD AUTO_NEG
     supported:  10MB-HD 10MB-FD 100MB-HD 100MB-FD 1GB-HD 1GB-FD COPPER AUTO_NEG
 2(tap0): addr:bc:30:5b:be:93:54, config: 0, state:0
     current:    10MB-FD COPPER
 3(gre0): addr:00:23:20:bd:fd:e4, config: 0, state:0
 LOCAL(br0): addr:bc:30:5b:be:93:54, config: 0x1, state:0x1
OFPT_GET_CONFIG_REPLY (xid=0x3): frags=normal miss_send_len=0


the ovs-ofctl show on host2 :

root at panda109:~# ovs-ofctl show br0
OFPT_FEATURES_REPLY (xid=0x1): ver:0x1, dpid:00000016d43b0127
n_tables:2, n_buffers:256
features: capabilities:0x87, actions:0xfff
 1(eth0): addr:00:16:d4:3b:01:27, config: 0, state:0
     current:    1GB-FD COPPER AUTO_NEG
     advertised: 10MB-HD 10MB-FD 100MB-HD 100MB-FD 1GB-HD 1GB-FD AUTO_NEG
     supported:  10MB-HD 10MB-FD 100MB-HD 100MB-FD 1GB-HD 1GB-FD COPPER AUTO_NEG
 2(tap0): addr:62:9f:88:ea:72:a9, config: 0, state:0
     current:    10MB-FD COPPER
 3(gre0): addr:00:23:20:f6:01:97, config: 0, state:0
 LOCAL(br0): addr:00:16:d4:3b:01:27, config: 0x1, state:0x1
OFPT_GET_CONFIG_REPLY (xid=0x3): frags=normal miss_send_len=0

On Sat, Apr 9, 2011 at 12:58 AM, Ben Pfaff <blp at nicira.com> wrote:
> On Fri, Apr 08, 2011 at 03:13:57PM +0800, benzwt benzwt wrote:
>> I have surfed an tutorial about create GRE using OVS.
>
> Can you direct us to this tutorial?  Perhaps we can get it fixed.
>
>> The commands are as follows:
>>
>> ovs-vsctl create interface type=gre name =gre0 option="remote_ip=x.x.x.x"
>>
>> But, the latest ovs-vsctl(build from lastest snapshot) doesn't have
>> the option "create".
>
> The "create" command is still there.  I think that you must be
> misinterpreting an error message.
>
>> Where can I get the latest documentation about setting up GRE tunnel  ?
>
> Here's a command that should work:
>        ovs-vsctl -- add-port br0 gre0 \
>                -- set Interface gre0 type=gre options:remote_ip=1.2.3.4
>