I'm learning the ropes of networking with packet tracer and I need a little help.
Here the sample network I've been working on.
I have a LAN with some VLANs connected to a router on a stick, cisco 2811. No problems on this end.
That router is connected to one of the 6 routers owned by the ISP.
They are connected to each other in a partial mesh using OSPF protocol.
Supposing now to have 5 more LANs connected to as many ISP routers.
The problem is that I can't ping devices through the ISP network.
I just can ping the first IPS router.
Of couse I missed something...
Please have a look at the attached .pkt sample.
Thanks in advance anyone who wanted to give me some advice and corrections on it.
Solved! Go to Solution.
I have looked at your file. The problem is (all) IP addressing. Four of your routers do not have IP addresses at all. The rest of all IP addressing is wrong. In all, my guess is to fix this, it will take a couple of hours at least.
What are the requirements for the IP addressing ? The file says the public ip address space is 126.96.36.199/8. Where are the 10.x addresses coming from you are using ?
I didn't mention all the details, sorry. I configured just 3 router in the mesh to start.
I saw I forgot to set the gateway on the server but I still can't ping it. I don't understand what is wrong with ISP4 routers.
Concerning your first question, I suppose I got the meaning/use of public ip address space very wrong so I used 10.x addresses to connect the ISP routers and 51.x for connection to the ISP ones...
Could you please just give me some advice on how to use them in the proper way?
everything works in your file. I still can't ping the server from router0 or router 1.
I made some (too many) corrections on my file but I still miss something.
What kind of modifications have you done?
Better if I start from scratch to set up the ISP network and connected routers.
Here is my plan, and my doubts...
If I have understood correctly, first I have to subnet 188.8.131.52/8 for all the above connections.
For each router connected directly to the ISP ones: set up PAT; static route toward ISP router.
Set up OSPF on ISP routers.
Is it correct? Forgot something?
Any suggestion would be appreciated.
Maybe I can get back with a new (better?) file for review
that looks a whole lot better. In order for all routers to have reachability to the 192.168.0.0/27 network, you need to add a static route on the ISP-6 router, and redistribute that into OSPF:
router ospf 1
--> redistribute static subnets
network 184.108.40.206 0.0.0.3 area 1
network 220.127.116.11 0.0.0.3 area 1
network 18.104.22.168 0.0.0.3 area 1
--> ip route 192.168.0.0 255.255.255.224 22.214.171.124
Revised file is attached.
I can't open your file even with the latest version of packet tracer. I guess it is corrupted.
Anyway, I had already set up the ospf on ISP6. It has lost that modification somehow.
From my understanding, I have to add a static route to each ISP router to point the networks behind router0-1-2.
Thanks for your time.