how to determine next hop ip at Router?

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???

Hi
1) to check what is happening use tcpdump
2) for host a to send data to host b u have to add the default routes
or use the iproute2 tables to define diffrent paths for diffrent
traffic
Good Luck

On 7 May 2005, (E-Mail Removed) <(E-Mail Removed)> 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