10-26-2022 09:00 AM - edited 10-26-2022 09:01 AM
Hello,
I've attached a screenshot from my topology in GNS3.
So, my problem is that PAT is not translating - shows nothing in the statistic or translations.
I want connectivity between PC1 (192.168.100.1 - VLAN10) and the BORDER-RA (1.1.1.2). Thats why I used PAT.
You can find my config of R1 and BORDER-RA attached.
On R1 i have HRSP (with R1 being primary with 192.168.100.254 on g0/0.10) together with R2 which you cant see but is not important. A default route to BORDER-RA (1.1.1.2), and a PAT config which allows traffic from VL10 and VL20 (192.168.100.0 and 192.168.200.0). SubIF g0/0.10 and .20 are configured with ip nat inside and g0/2 with ip nat outside. I doubt that the config of BORDER-RA is relevant, but I still uploaded it so maybe there is something wrong...
I captured traffic between both routers with Wireshark and when I ping from PC1 to 1.1.1.2, it shows only ICMP-Request with the source address 192.168.100.1 - which should not happen. THat means that traffic doesnt even pass the PAT-process, it goes straigt to the default route. I have no idea what's wrong I even rebuild the topology in Packet Tracer but there it works without problems.
Maybe you guys can help me.
10-26-2022 10:52 AM
still not working
10-26-2022 11:12 AM - edited 10-26-2022 11:13 AM
ok, capture the traffic before enter the R1,
do you see the frame tag with VLAN-ID 10 ??
share the wireshark frame
10-26-2022 11:18 AM
10-26-2022 11:31 AM
debug ip nat translations
do this in R1 and share any output
10-26-2022 12:00 PM
"debug ip nat translations" command not possible...
i tried "debug ip nat" for everything... but still nothing
10-26-2022 12:07 PM
ip access-group 150 in
can you remove this and check again.
10-26-2022 12:24 PM
still no...
10-26-2022 12:24 PM
maybe its the image?
10-26-2022 12:31 PM
sure It can, I use stable image c7200.
but still L2 SW image have many issue in GNS3.
what I suspect is SW-Router trunk is not work as we want
so try change router image
10-26-2022 01:01 PM
hmm.. weird i will talk with my teacher and i will tell you if he finds something different maybe.. thanks a lot, i will inform you!
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