Re: how to determine next hop ip at Router?
From: David Efflandt (efflandt_at_xnet.com)
Date: 05/08/05
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Date: Sun, 8 May 2005 16:36:09 +0000 (UTC)
On 7 May 2005, cranium.2003@gmail.com <cranium.2003@gmail.com> wrote:
> hello,
> I have setup a network with 4pcs as
> HostA
> eth0=> 192.168.1.100
>
> Router1
> eth0=>10.1.1.1
> eth1=>192.168.1.1
>
> Router2
> eth0=>10.1.1.100
> eth1=>172.16.1.1
>
> HostB
> eth0=>172.16.1.100
>
> And set Router1 and Router2 as packet forwarder(Router). Now what i
> want is when i send a packet from HostA to HostB packet is still sent
> as src ip=192.168.1.100 and dest ip=172.16.1.100 its ok but how can i
> check at Router1 that packet is Direct Delivery or Indirect Delivery?
> What i want that i should get information at Router1 that whaterver
> HostA sends a packet with dest ip 172.16.1.100 i should get that next
> ip to which packet is going to be forwarded. In here i want to get
> information
> that though dest ip is 172.16.1.100 the next ip is 10.1.1.100?
> How to get that info???
If all routing is correct, and HostB is not behind NAT or masquerade, and
nothing else blocks traceroute responses, then from HostA do:
/usr/sbin/traceroute 172.16.1.100
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