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Forum Discussion
pstoev
May 09, 2018Tutor
Default route on ReadyNAS 4220
Hello there, I am trying to set a default route using statically configured eth1 interface. I am in Networks - Routes menu and I enter 0.0.0.0 for IP and 0.0.0.0 for subnet mask. Subnet mask does not...
- May 10, 2018
until I have physical access to the box, this is my temprary solution. Apperatnly though it will not work if the ReadyNAS is rebooted
root@Netgear:/# route delete default gw 0.0.0.0 eth0
root@Netgear:/# route add default gw 192.168.100.1 eth1
StephenB
May 10, 2018Guru - Experienced User
Normally you use 255.255.255.255 as the subnet mask for IP address 0.0.0.0
Also, you appear to have configured Google's public DNS server (8.8.8.8) as a static route - which of course won't work.
What are you trying to accomplish? Wouldn't it be simpler to just remove the second ethernet connection?
- pstoevMay 10, 2018Tutor
StephenB - thank you for the response, I will try that. But just to be preceise, using 0.0.0.0/32 is not normal. Industry standard says:
"The default route in Internet Protocol Version 4 (IPv4) is designated as the zero-address 0.0.0.0/0 in CIDR notation"
I will now remove the 8.8.8.8/32 route - i was using it to test.
I am trying to get the ReadyNAS connect to the NTP servers which are factory specified to be "time-e.netgear.com" and which would not work without DNS...which would not work without default route or local DNS server which we dont have.
I cannot just remove second ethernet connection. This is a backup NFS appliance for several networks and so it needs to be connected to these networks.
- StephenBMay 10, 2018Guru - Experienced User
pstoev wrote:
StephenB - thank you for the response, I will try that. But just to be preceise, using 0.0.0.0/32 is not normal. Industry standard says:
"The default route in Internet Protocol Version 4 (IPv4) is designated as the zero-address 0.0.0.0/0 in CIDR notation"
Yeah, it might not work - (and could give you an unrouteable error). if you need 0.0.0.0 with a 0.0.0.0 mask, then you might need to use ssh.
But I don't still understand the purpose for entering it. Traffic that isn't sent to 192.168.100.x and isn't covered by another static route should be going to 192.168.100.1 anyway,. correct?
- pstoevMay 10, 2018Tutor
Ok here is the background:
eth0 - 172.30.1.5 IP is connected to the network to backup VMs on 172.30.1/24 network
eth1 - 192.168.100.50 is connected the network to backup VMs on 192.168.100/24 network AND 192.168.100.1 is the gateway out to internet
eth2 - 192.168.199.47 is connected the network to backup VMs on 192.168.199.24 network and 192.168.199.1 is the gateway to 192.168.99/24 network BUT NOT to internet
do you have a reference for ssh commands to set routes ? here is the current routing table
root@Netgear:/home/admin# netstat -nr
Kernel IP routing table
Destination Gateway Genmask Flags MSS Window irtt Iface
0.0.0.0 172.30.1.1 0.0.0.0 UG 0 0 0 eth0
8.8.8.8 172.30.1.1 255.255.255.255 UGH 0 0 0 eth0
172.30.1.0 0.0.0.0 255.255.255.0 U 0 0 0 eth0
172.30.1.1 0.0.0.0 255.255.255.255 UH 0 0 0 eth0
192.168.99.0 192.168.199.1 255.255.255.0 UG 0 0 0 eth2
192.168.100.0 0.0.0.0 255.255.255.0 U 0 0 0 eth1
192.168.100.1 0.0.0.0 255.255.255.255 UH 0 0 0 eth1
192.168.199.0 0.0.0.0 255.255.255.0 U 0 0 0 eth2
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