Operation Manual - Link Layer Protocol
H3C SecPath F1800-A Firewall
Chapter 2 PPP Configuration
4-21
Serial3/1/0 current state : DOWN
Link layer protocol current state : DOWN
2)
The interface is activated, but link negotiation is not successful.
Serial3/1/0 current state: UP
Link layer protocol current state : DOWN
3)
The link negotiation, that is, the LCP negotiation on this interface succeeds.
Serial3/1/0 current state: UP
Link layer protocol current state: UP