How configure 2 NIC, 1 for internet, 1 for IPTV

[its_johan]

(was posted kubuntu, should be ubuntu)

Hello,
I am trying for weeks to get my multicast stream going.
I have 100mbps fibre connection and the 'modem' has 2 outputs, 1 for internet, 1 for udp IPTV.
I would like to configure the following:
eth1 to see the internet via my router (192.168.1.1)
eth2 to see the multicast TV stream via my modem IPTV output (UDP\\@225.1.1.xxx:1111, xxx is the TV channel number)

I always have tried a lot of settings, but OR eth1 working but no IPTV, OR eth2 works but no internet.

[jonobr]

Hello


Recommend you post the configuration your currently using,
eg /etc/resolv.conf, ifconfig, /etc/network/interfaces
where your doing ip forwarding, bridging routing and so on.

More info will help

[its_johan]

Thanks;
/ets/resolv.conf

search local
nameserver 192.168.1.1

/etc/network/interfaces
For eth2 I choosen a 'fictive' gateway and IP

# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
#
# WARNING: This file is auto-generated by the ReelBox setup, so you
#          should not edit it manually. Use the setup menu instead.
#
# The loopback network interface
auto lo
iface lo inet loopback
address 127.0.0.1
netmask 255.0.0.0
 
# Satelite receiver network interface
auto eth0
iface eth0 inet manual
up ifconfig eth0 up
 
# Internet network interface
auto eth1
iface eth1 inet static
address 192.168.1.118
netmask 255.255.255.0
gateway 192.168.1.1
 
# IPTV network interface
auto eth2
iface eth2 inet static
address 192.168.2.110
netmask 255.255.255.0
gateway 192.168.2.1
 
# route for multicast stream
up route add -net 224.0.0.0 netmask 240.0.0.0 dev eth2

[jonobr]

Given your setup for routing between the two networks,
have you set up IP forwarding?

cat /proc/sys/net/ipv4/ip_forward

if you get a 0 ip foprwarding is disabled.


You can change on the fly

echo 1 > /proc/sys/net/ipv4/ip_forward

test and see if it works

[its_johan]

I tried this, but it does not seem to make any difference.
As soon as I set a gateway for eth2 i loose internet connection, but have IPTV.

NO IPTV, but internet:

root@ReelBox:~# route                                                        
Kernel-IP-Routentabelle                                                      
Ziel            Router          Genmask         Flags Metric Ref    Use Iface
192.168.99.128  *               255.255.255.252 U     0      0        0 tun0 
192.168.1.0     *               255.255.255.0   U     0      0        0 eth1 
192.168.1.0     *               255.255.255.0   U     0      0        0 eth2 
224.0.0.0       *               240.0.0.0       U     0      0        0 eth2 
default         192.168.1.1     0.0.0.0         UG    100    0        0 eth1

IPTV, but NO internet

root@ReelBox:~# route                                                        
Kernel-IP-Routentabelle                                                      
Ziel            Router          Genmask         Flags Metric Ref    Use Iface
192.168.99.128  *               255.255.255.252 U     0      0        0 tun0 
192.168.1.0     *               255.255.255.0   U     0      0        0 eth1 
192.168.1.0     *               255.255.255.0   U     0      0        0 eth2
224.0.0.0       *               240.0.0.0       U     0      0        0 eth2 
default         192.168.1.1     0.0.0.0         UG    0      0        0 eth2 
default         192.168.1.1     0.0.0.0         UG    100    0        0 eth1

changing the metric value makes the lowest value win and block the eth* with the highest number

[jonobr]

Question- If a packet comes for the 192.168.1.x network it seems from both routing tables that there is a route to either network through eth1 and through eth 2.
the metrics are the same , the routes are up,
How do you route to the right network?

I may have missed something or misreading something or maybe its getting late

[its_johan]

Hi,
Thanks for your attention.
As mentioned in my 1st post, eth1 should go to my router and be in the 192.168,1.x network. eth2 does not need to be in that network and should connect directly to the modem. to get it working eth2 needs 'a' gateway. otherwise it does not work. but as soon as I have a gatway (any IP i make up will do) i have IPTV via eth2 but then eth1 has still connectoion to the 192.168.1.x network but no more internet route.