topic Re: MPC8308NSG Routing table Configuration in PowerQUICC Processors

MPC8308NSG Routing table Configuration

ziedjelassi — Tue, 17 Sep 2013 13:53:52 GMT

Hi,

I'm using ISP router modem to have an internet access. So it manages the 192.168.1.0/24 sub-network and provide internet access. I have linked the MPC8308NSG WAN interface to this router. As network.png figure shows; I have accorded to it the 192.168.1.96 address. And it will manages the 192.168.2.0/24 sub-network. Other linked figures show its firewall and routing table configurations.

I have linked a PC to MPC8308NSG LAN and I have tested internet access. the result is negative; any device in MPC8308NSG LAN cannot have see any address not in 192.168.2.0/24 sub-network.

Please help.

Best regards,

Zied.

Re: MPC8308NSG Routing table Configuration

sinanakman — Tue, 17 Sep 2013 14:10:22 GMT

Hi Zied, I am not familiar particularly with MPC8308NSG, but in general, first start testing from inside MPC8308NSG. Login to that device and ping a public address. If this works, then ping the address of MPC8308NSG (192.168.2.1 ??) from your PC. If that works as well then there is mainly two possibilities : either MPC8308NSG does not forward the ping or perhaps the ISP provided router is filtering the ping reply on the way back. So please test the ping separately e.g. : PC->MPC8308NSG, MPC8308NSG-> ISP router, PC->ISP Router, MPC8308NSG->Internet and finally PC->Internet. Hope this helps.

Sinan Akman

Re: MPC8308NSG Routing table Configuration

ziedjelassi — Tue, 17 Sep 2013 14:39:51 GMT

Hi Sinan,

Thx for your answer.

the linked figure shows our network.

the next table resumes the ping results.

--------------------------------------------------------------------------------------------------------------------------

Ping from To Status

--------------------------------------------------------------------------------------------------------------------------

192.168.2.3 192.168.2.1 ok

192.168.2.3 192.168.1.96 ok

192.168.2.1 192.168.2.3 ok

192.168.1.96 192.168.1.1 ok

192.168.1.96 192.168.1.3 ok

192.168.1.96 www.freescale.com ok

192.168.2.3 192.168.1.1 NOK

192.168.2.3 192.168.1.3 NOK

192.168.2.3 www.freescale.com NOK

Best regards,

Zied.

Re: MPC8308NSG Routing table Configuration

sinanakman — Tue, 17 Sep 2013 15:28:05 GMT

Hi Zied, it seems like your 8308 is not doing the forward. If you are running Linux on that box, you might try something like :

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

To enable ip forwarding. Check its value beforehand if it was disabled.

Hope this helps.

Re: MPC8308NSG Routing table Configuration

albertovargas — Tue, 17 Sep 2013 15:32:23 GMT

Hi zied

First of all, Have you set the default gateway to be 192.168.2.1 for computer 3?. I'm not familiar with MPC8308NSG, but, if you can, try pinging from 192.168.2.1 to 192.168.2.3 and from 192.168.2.3 to 192.168.2.1.

In the first case, if it's succesful, the problem could be the MPC8308NSG firewall rules. If it's not, disable any firewall in computer 3 and try again, especially if you're using Windows.

In the second case, the trouble could be in MPC8308NSG firewall configuration and again, try disabling any firewall in computer 3.

The last thing you can check is if you're using the correct cable, straight or crossover..

I hope this helps.

Re: MPC8308NSG Routing table Configuration

ziedjelassi — Tue, 17 Sep 2013 15:58:19 GMT

hi Sinan,

actually, the file ip_forward is a clean file and the cmd echo 1 > /proc/sys/net/ipv4/ip_forward doesn't modify it.

best regards,

Zied.

Re: MPC8308NSG Routing table Configuration

ziedjelassi — Tue, 17 Sep 2013 16:00:57 GMT

Hi Alberto,

Thx for your answer.

I have disable computer 3 firewall but there is no changes.

Best regards,

Zied.

Re: MPC8308NSG Routing table Configuration

sinanakman — Tue, 17 Sep 2013 16:02:29 GMT

Hi Zied, not sure what you mean by "clean" file. You mean it has no content? If the proc sys was enabled in your system you should see this file. What do you see if you do :

ls /proc/sys/net/ipv4/ip_forward

and

cat /proc/sys/net/ipv4/ip_forward

Thanks

Sinan Akman

Re: Re: MPC8308NSG Routing table Configuration

marius_grigoras — Tue, 17 Sep 2013 16:03:12 GMT

If you want to make this configuration permanent the best way to do it is using the file/etc/sysctl.conf where we can add a line containing net.ipv4.ip_forward = 1

After this you'll need to restart the network service -> full details can be found here [1]

Regards,

Marius

[1] How to enable IP Forwarding in Linux - MDLog:/sysadmin

Re: MPC8308NSG Routing table Configuration

ziedjelassi — Tue, 17 Sep 2013 16:08:01 GMT

Hi Sinan,

I'm sorry vi can't show ip_forward file baut with cat it will be possible.

It contains 1 now.

But there is not changes.

Best regards,

Zied

Re: MPC8308NSG Routing table Configuration

albertovargas — Tue, 17 Sep 2013 16:13:15 GMT

Restart the network service (you must be root)

RED HAT Based: /etc/init.d/network restart

Debian Based: /etc/init.d/networking restart

Re: Re: MPC8308NSG Routing table Configuration

ziedjelassi — Tue, 17 Sep 2013 16:13:44 GMT

Hi Marius,

Thx for your answer.

Best regards,

Zied

Re: MPC8308NSG Routing table Configuration

ziedjelassi — Tue, 17 Sep 2013 16:29:01 GMT

Hi Alberto,

computer 3 has as gateway address 192.168.2.1 and the ping service is ensured in both side as shown in my comment (ziedjelassi 17 sept. 2013 07:39 (en réponse à Sinan Akman)). All firewall are disabled. And my cables are checked.

networking service is restarted but tell now there is no changes.

Best regards,

Zied.

Re: MPC8308NSG Routing table Configuration

albertovargas — Tue, 17 Sep 2013 17:04:28 GMT

I think what may be happening, your computers in the 192.168.1.0 network side have their default gateway set to 192.168.1.1. When a packet addressed to 192.168.2.0 network arrives, 192.168.1.1 (ISP ROUTER) doesn't know what to do with it, because it doesn't know the 192.168.2.0 network. Try using a traceroute from both sides to see if that is what is going on.

Re: MPC8308NSG Routing table Configuration

alexander_yakov — Wed, 18 Sep 2013 01:31:46 GMT

Your "ISP router modem" should be also properly configured to be aware, where to route packets for network 192.168.2.0/24

Please configure modem router table to route network 192.168.2.0/24 to gateway 192.168.1.96

Also, your modem (I guess) performs NAT (network address translation) for network 192.168.1.0/24 and I'm not sure if it is really possible to instruct this device to also perform this translation for network 192.168.2.0/24

Note, address 192.168.1.96 is dynamically allocated by your modem' DHCP service and may be changed.

Please look DHCP settings and configure permanent allocation.

With net.ipv4.ip_forward=1 in sysctl.conf this should solve the problem.

Re: MPC8308NSG Routing table Configuration

ziedjelassi — Wed, 18 Sep 2013 10:02:31 GMT

Hi,

the figures below describe the MPC8308NSG (called NSG-EBSYS) traceroute result and the host addressed 192.168.2.147 one.

Best regards,

Zied

Re: MPC8308NSG Routing table Configuration

alexander_yakov — Wed, 18 Sep 2013 12:27:13 GMT

Please show kernel routing table in NSG

Re: MPC8308NSG Routing table Configuration

ziedjelassi — Wed, 18 Sep 2013 13:20:35 GMT

Re: MPC8308NSG Routing table Configuration

alexander_yakov — Thu, 19 Sep 2013 01:34:22 GMT

Routing table shows two networks 192.168.1.0 and 192.168.2.0 directly connected, network 192.168.2.0 listed two times with interfaces br-lan and ra00_0

So, as I can guess, you have configured IP addresses from the same network 192.168.2.0/24 on two different interfaces.

Please determine which one is correct, remove incorrect interface (or assign IP-address from another network).

Check the result by ping 192.168.2.147

Also, there are two "default" entries. This entry means where to send packets for all other networks, not listed explicitly in routing table.

In your case first entry is correct, NSG should send all other packets to 192.168.1.1 (your ISP router modem). Second entry should be removed.

Check the result by traceroute to any external internet address.

Re: MPC8308NSG Routing table Configuration

ziedjelassi — Fri, 20 Sep 2013 08:10:53 GMT

Hi Alexander,

the linked figure shows the MPC8308NSG ifconfig result:

the routing table presented below is the auto generated one.

Best regards,

Zied.