Here is the scenario: US ASA 5510/switch 3560, Singapore ASA 5515/switch 3570
US site 10.254.0.0/16
mpls router 10.254.18.14 vlan18
Singapore site 10.253.0.0/16
workstation 10.253.28.0/24 valn28
Site to site tunnel is up and running and i can ping to all vlans at both sites. 10.253.28.100 can ping 10.254.18.14.
I have a mpls router on the US site inside interface 10.254.18.14 that allows me to access a server at 172.31.52.110 at the other side of the mpls router.
If i add ip route 172.31.52.110 255.255.255.255 10.254.18.14 on the default router in singapore and run a ping to 172.31.52.110 the traffic never goes accross the tunnel, but goes directly to the internet.
Below are my trace commands from the singapore 3570 switch
Table of ContentsIntroductionVersion HistoryPossible Future
UpdatesDocuments PurposeNAT Operation in ASA 8.3+ SectionsRule Types
Network Object NATTwice NAT / Manual NATRule Types used per SectionNAT
Types used with Twice NAT / Manual NAT and Network Obje...
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