[Xorp-users] Problem with network reachability

[Miroslav Todorovic]

Thank you!

I didn't check routing tables in windows, but I did use traceroute for forwarding paths monitoring. 
If the packets could not be delivered to destination address, problem is router's forwarding. There is always one router, (first, the second or third on the path), in the network where the packets getting stuck. It could not realise how to forward packets to some other router, or its subnet.
All router's routing tables are formed correctly. 

I want to test multicast streaming. I used ospf as unicast protocol, and the simpliest ospf configuration, like: 

protocols {
    ospf4 {
	router-id: 10.10.10.10

	area 0.0.0.0 {
	    interface dc0 {
		vif dc0 {
		    address 10.10.10.10 {
		    }
		}
	    }
	}
    }
}
Maybe I need to specify something more in configuration?
I've tried with smaller network, and it worked well.

From: Ben Greear <greearb at candelatech.com>
Subject: Re: [Xorp-users] Problem with network reachability
To: "Miroslav Todorovic" <miro_todorovic at yahoo.com>
Cc: "xorp comunity" <xorp-users at xorp.org>
Date: Thursday, June 10, 2010, 1:46 PM

On 06/10/2010 01:22 PM, Miroslav Todorovic wrote:
> Hello,
>
> My network has five xorp routers. U used vmware ubuntu virtual machine
> to install xorp. I also have five windows VM in the network.
> My problem is:
>
> When I try to ping interfaces in the network from windows VM I could not
> reach all interfaces, but if I try to ping from any router, I have full
> network reachability.
> In other words, some routers, but not all, don't realise how to forward
> packets to destination address when I send packets from windows VM.
> Problem doesn't exist if I
> ping from any routers.

Maybe your windows system doesn't have the needed routes in it?

Try something like traceroute to see where the packets go in
the network...

Thanks,
Ben

>
> Any idea?
>
> Thank you!
>
> Miroslav
>
>
>
>
> _______________________________________________
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> Xorp-users at xorp.org
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-- 
Ben Greear <greearb at candelatech.com>
Candela Technologies Inc  http://www.candelatech.com



      
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