[LARTC] basic ip problem

[LARTC] basic ip problem

[Raul Dias]

Hi,

I am creating some routing policy and I am having a basic problem with ip.
I am starting with 2 hosts to test the configuration.

   ----------            ----------
   | host A |------------| Host B |
   ----------            ----------
IP: 10.0.100.1           IP: 10.0.100.2

On hostA:
# ip address add 10.0.100.1/24 dev eth0 brd +

On hostB:
# ip address add 10.0.100.2/24 dev eth0 brd +

With this both sides can ping each other (as expected)

Now at host A I get the error:
# ip route add 10.0.100.1/24 dev eth0 table 200
RTNETLINK answers: Invalid argument

I have read the archieves (most of it), the howto and
the ip-cred documentation.

However I am still missing something. I don't get what is wrong.

Here is my configurations:

Host A:
- addresses:
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 brd 127.255.255.255 scope host lo
2: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100
    link/ether 00:01:02:98:40:00 brd ff:ff:ff:ff:ff:ff
    inet XXX.x.x.x/24 brd XXX.x.XX.XX scope global eth0
    inet 10.0.100.1/24 brd 10.0.100.255 scope global eth0

- table main:
10.0.100.0/24 dev eth0  proto kernel  scope link  src 10.0.100.1
XXX.x.XXX.0/24 dev eth0  proto kernel  scope link  src XXX.x.XXX.x
127.0.0.0/8 dev lo  scope link
default via XXX.x.XXX.x dev eth0

-table local:
broadcast 127.255.255.255 dev lo  proto kernel  scope link  src 127.0.0.1
broadcast 10.0.100.255 dev eth0  proto kernel  scope link  src 10.0.100.1
local x.x.x.1 dev eth0  proto kernel  scope host  src x.x.x.1
broadcast x.x.x.255 dev eth0  proto kernel  scope link  src x.x.x.1
broadcast 10.0.100.0 dev eth0  proto kernel  scope link  src 10.0.100.1
local 10.0.100.1 dev eth0  proto kernel  scope host  src 10.0.100.1
broadcast 127.0.0.0 dev lo  proto kernel  scope link  src 127.0.0.1
broadcast x.x.x.0 dev eth0  proto kernel  scope link  src x.x.x.1
local 127.0.0.1 dev lo  proto kernel  scope host  src 127.0.0.1
local 127.0.0.0/8 dev lo  proto kernel  scope host  src 127.0.0.1


On Host B:

- addresses
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 brd 127.255.255.255 scope host lo
2: eth0: <BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast qlen 100
    link/ether 00:01:02:71:44:5d brd ff:ff:ff:ff:ff:ff
    inet x.x.x.140/24 brd x.x.x.255 scope global eth0
    inet 10.0.100.2/24 brd 10.0.100.255 scope global eth0

- table main
10.0.100.0/24 dev eth0  proto kernel  scope link  src 10.0.100.2
x.x.x.0/24 dev eth0  proto kernel  scope link  src x.x.x.140
127.0.0.0/8 dev lo  scope link
default via x.x.x.131 dev eth0

- table local
broadcast 127.255.255.255 dev lo  proto kernel  scope link  src 127.0.0.1
broadcast 10.0.100.255 dev eth0  proto kernel  scope link  src 10.0.100.2
local x.x.x.140 dev eth0  proto kernel  scope host  src x.x.x.140
broadcast x.x.x.255 dev eth0  proto kernel  scope link  src x.x.x.140
broadcast 10.0.100.0 dev eth0  proto kernel  scope link  src 10.0.100.2
broadcast 127.0.0.0 dev lo  proto kernel  scope link  src 127.0.0.1
local 10.0.100.2 dev eth0  proto kernel  scope host  src 10.0.100.2
broadcast x.x.x.0 dev eth0  proto kernel  scope link  src x.x.x.140
local 127.0.0.1 dev lo  proto kernel  scope host  src 127.0.0.1
local 127.0.0.0/8 dev lo  proto kernel  scope host  src 127.0.0.1


On both hosts no special rule (yet):
0:      from all lookup local
32766:  from all lookup main
32767:  from all lookup defaul


Regards,

Raul Dias

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Re: [LARTC] basic ip problem

[bert hubert]

On Mon, Nov 26, 2001 at 07:57:20PM -0300, Raul Dias wrote:
> 
> Hi,
> 
> I am creating some routing policy and I am having a basic problem with ip.
> I am starting with 2 hosts to test the configuration.
> 
>    ----------            ----------
>    | host A |------------| Host B |
>    ----------            ----------
> IP: 10.0.100.1           IP: 10.0.100.2
> 
> On hostA:
> # ip address add 10.0.100.1/24 dev eth0 brd +
> 
> On hostB:
> # ip address add 10.0.100.2/24 dev eth0 brd +
> 
> With this both sides can ping each other (as expected)
> 
> Now at host A I get the error:
> # ip route add 10.0.100.1/24 dev eth0 table 200
> RTNETLINK answers: Invalid argument

Did you first create this table?

ip rule add <selector> table 200

Regards,

bert

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Re: [LARTC] basic ip problem

[Raul Dias]

>> Now at host A I get the error:
>> # ip route add 10.0.100.1/24 dev eth0 table 200
>> RTNETLINK answers: Invalid argument
>
>Did you first create this table?
>
>ip rule add <selector> table 200

Are you sure that the table has to be created first with 'ip rule' ?

Changing the line to '# ip route add 10.0.100.0/24 dev eth0 table 200'
worked.

Regards,

Raul Dias

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