I have a question to management in an MPLS/VPN network. Up to now I always
used the "grey" VPN: Created a management VPN, exported the IPs I want to
manage from my VPNs into the grey VPN and information from the grey VPN
back into the VPNs. So far, so good.
But now someone told me that this is not the right way to do it, because
you cannot import routes from a vrf on the same device. So as long as you
have two, you are fine. If one fails, you loose access to/from your management
I tried to find something about this problem, but unfortunately I was not
able to find some documentation on this. The guy telling me about it could
not explain it any further than this.
Does anyone have an explanation or a link to a document to this? Does that mean
that grey VPNs are not working?
So what is the way to do management vpns?