Ping Replying from Internal IP???

[AIT]

Right.. this has got me stumped.

 

We have a telephone system that uses an external sip trunk 83.166.160.240.

 

From my workstation can ping and tracert it fine, (to node4).

 

From the server at the customers location pinging 83.166.160.240 gets a reply from 10.0.0.74 (the SIP Server...), Hence the ping coming back as a proper reply from a different ip.

 

from the sip server itself you cannot pint 83.166.160.240.

 

Has anyone got any thoughts.

 

I have tried the obvious of clearing arp. (but there were no arp entries for 83.166.160.240.)

 

help would greatly be appreciated.

 

Thanks

[SYNACK]

What OS, if it fails out you'd end up with it replying with an unreachable from the local address.

[mac_shinobi]

What OS, if it fails out you'd end up with it replying with an unreachable from the local address.

 

Only time I have seen anything like what you describe is on windows 7 32 bit enterprise at work which gives me output something like below

 

C:\> Ping A.B.C.D

Pinging A.B.C.D with 32 bytes of data :

Reply from D.E.F.G : Destination host unreachable

Reply from D.E.F.G : Destination host unreachable

Reply from D.E.F.G : Destination host unreachable

Reply from D.E.F.G : Destination host unreachable

 

Ping statistics for D.E.F.G :

Packets : Sent = 4, Received = 4, Lost = 0 ( 0% Loss ),

 

C:\>

 

A.B.C.D is the ip address I am attempting to ping where as D.E.F.G is the ip address of either my computer or the likes

Edited June 29, 2012 by mac_shinobi

[glennda]

Is the default gateway set correctly?

[twin--turbo]

A diagram would help understand the locations and paths...

 

Rob