Ssh error while two interfaces are up simultaneously

Linux and Unix-Like Red Hat
1

hi all,

my system having two interfaces of 172.16.1.232 and 10.250.41.10 and i am using this to establish tunnel to our client network.

eth0=10.250.41.10
eth1=172.16.1.232

I am not able to connect when two interfaces are up

[root@mind-41 ~]# ssh -l avytla 172.16.80.203
ssh: connect to host 172.16.80.203 port 22: No route to host

client ip in remote location: 172.16.80.203

[root@mind-41 ~]# sysctl -p
net.ipv4.ip_forward = 1
net.ipv4.conf.default.rp_filter = 1
net.ipv4.conf.default.accept_source_route = 0
kernel.sysrq = 0
kernel.core_uses_pid = 1
net.ipv4.tcp_syncookies = 1
kernel.msgmnb = 65536
kernel.msgmax = 65536
kernel.shmmax = 4294967295
kernel.shmall = 268435456

I am able to connect when one of the local interface is down

[root@mind-41 ~]# ifdown eth1
[root@mind-41 ~]# ssh -l avytla 172.16.80.203
avytla@172.16.80.203's password:

how to resolve this issue, please help me to solve this ASAP.

2

pls be more specific. Post info like netmasks, routing tables, differences in those when one IF is down. Did you try a traceroute in both cases?

4

Thanks for the reply...

i have figured it out, issue was with the subnet i changed the range of my system eth1 from 172.16.0.0 to 172.17.0.0 and its working

Thanks