[SOLVED] routing ports

hardikgohil1988 · 12-04-2014, 09:50 PM

Hello,

I have a Embedded Board

eth0 ip : 192.168.82.x eth1 ip : 192.168.82.y

up eth0 first then eth1

when I ping from host to both the interfaces default route goes though eth0 only.It doesn't matter whether eth1 link is connected or not.

if I up eth1 first the default route goes through eth1

help me

smallpond · 12-05-2014, 04:49 PM

Both ports are on the same subnet. What are you expecting to happen?

Nemesiz · 12-05-2014, 05:15 PM

You have to make some rules to route the IP respond.

hardikgohil1988 · 12-07-2014, 07:38 PM

Quote:

Originally Posted by smallpond

Both ports are on the same subnet. What are you expecting to happen?

Problem is whenever I ping eth1 ip address eth0 is responding.i remove eth1 link connection ping response still works instead of going to timeout.

Nemesiz · 12-07-2014, 11:38 PM

Can you print #ip route

hardikgohil1988 · 12-08-2014, 07:15 PM

Quote:

Originally Posted by Nemesiz

Can you print #ip route

# ip route
192.168.82.0/24 dev eth0 proto kernel scope link src 192.168.82.111
192.168.82.0/24 dev eth1 proto kernel scope link src 192.168.82.99

Nemesiz · 12-09-2014, 03:01 AM

You have to create 2 routing tables and set incoming and outgoing ip rules to look up in these tables.

# one time command
echo "100 IP1" >> /etc/iproute2/rt_tables
echo "101 IP2" >> /etc/iproute2/rt_tables

# commands for route

ip route add 192.168.82.0/24 dev eth0 src 192.168.82.111 table IP1
ip route add 192.168.82.0/24 dev eth1 src 192.168.82.99 table IP2

ip rule add to 192.168.82.111 lookup IP1
ip rule add from 192.168.82.111 lookup IP1

ip rule add to 192.168.82.99 lookup IP2
ip rule add from 192.168.82.99 lookup IP2

hardikgohil1988 · 12-10-2014, 12:23 AM

Quote:

Originally Posted by Nemesiz

You have to create 2 routing tables and set incoming and outgoing ip rules to look up in these tables.

# one time command
echo "100 IP1" >> /etc/iproute2/rt_tables
echo "101 IP2" >> /etc/iproute2/rt_tables

# commands for route

ip route add 192.168.82.0/24 dev eth0 src 192.168.82.111 table IP1
ip route add 192.168.82.0/24 dev eth1 src 192.168.82.99 table IP2

ip rule add to 192.168.82.111 lookup IP1
ip rule add from 192.168.82.111 lookup IP1

ip rule add to 192.168.82.99 lookup IP2
ip rule add from 192.168.82.99 lookup IP2

Thank you very much your answer is perfect.

Here is the most thorough list for getting iproute2 to work with your kernel:

CONFIG_NETFILTER_NETLINK=y
CONFIG_NETFILTER_NETLINK_QUEUE=y
CONFIG_NETFILTER_NETLINK_LOG=y
CONFIG_NF_CT_NETLINK=y
CONFIG_SCSI_NETLINK=y
CONFIG_IP_ADVANCED_ROUTER=y
CONFIG_NET_SCH_INGRESS=y
CONFIG_NET_SCHED=y
CONFIG_IP_MULTIPLE_TABLES=y
CONFIG_NETFILTER_XT_TARGET_MARK=y