Purpose of NVI Interface

[anonuevo_rex]

Hi Guys,

I just want to ask what is the purpose of the NVI interface? It appears on the lists of my router interfaces after I configure NAT. I noticed that it replicate the IP address of my NAT outside interface. As a result, I can't ping my point-to-point router. I tried to remove the IP Address but there's no command "int NVI #".

BTW, this was done on GNS3.

Thank you so much

Rex

[johnlloyd_13]

hi rex,

were you able to ping prior applying NAT?

make sure ports are unshut and on the same IP subnet.

here's a useful link explaining NVI interface:

https://supportforums.cisco.com/sites/default/files/legacy/0/8/0/60080-NAT%20Virtual%20Interface.pdf

[anonuevo_rex]

Hi johnlloyd_13

Thank you so much for this. I was able to fix this by recreating everything that I've started in the GNS3. I think its bug on the GNS3 since  I was able to do ping prior applying NAT and I make all ports are unshut and they're on the same IP subnet.

I wondering if NVI interface is still on the ISR G2 routers today.

Thank you so much

Rex

[anonuevo_rex]

Hi johnlloyd_13

Thank you so much for this. I was able to fix this by recreating everything that I've started in the GNS3. I think its bug on the GNS3 since  I was able to do ping prior applying NAT and I make all ports are unshut and they're on the same IP subnet.

I wondering if NVI interface is still on the ISR G2 routers today.

Thank you so much

Rex