I need some info on the following 6PE scenario.
The 6PE rfc states that second label must be used. Though I understand the above condition in a penultimate hop popping scenario, I am not clear about it when PHP is not involved.
When PHP is not involved the 6PE router will be receiving packets with two labels (top label corresponding to IPv4 LSP and the bottom label corresponding to IPv6 prefix). How will the packet be processed by the 6PE router?
Will the 6PE router do the following?
1. pop the top label
2. inspect the bottom label
3. pop the bottom label
4. forward the unlabeled packet to the
Are there any additional configuration involved in this?
Thanks in advance.