H3C Technologies H3C S7500E Series Switches - Manual (Page 177)

11-5
Diag Description
1 Control Detection Time Expired
2 Echo Function Failed
3 Neighbor Signaled Session Down
4 Forwarding Plane Reset
5 Path Down
6 Concatenated Path Down
7 Administratively Down
8 Reverse Concatenated Path Down
9~31 Reserved for future use
z State (Sta): Current BFD session state. Its value can be 0 for AdminDown, 1 for Down, 2 for
Init, and 3 for Up.
z Poll (P): If set, the transmitting system is requesting verification of connectivity, or of a
parameter change. If clear, the transmitting system is not requesting verification.
z Final (F): If set, the transmitting system is responding to a received BFD Control packet
that had the Poll (P) bit set. If clear, the transmitting system is not responding to a Poll.
z Control Plane Independent(C): If set, the transmitting system's BFD implementation does
not share fate with its control plane (in other words, BFD is implemented in the forwarding
plane and can continue to function through disruptions in the control plane.) If clear, the
transmitting system's BFD implementation shares fate with its control plane.
z Authentication Present (A): If set, the Authentication Section is present and the session is
to be authenticated.
z Demand (D): If set, Demand mode is active in the transmitting system (the system wishes
to operate in Demand mode, knows that the session is up in both directions, and is
directing the remote system to cease the periodic transmission of BFD Control packets). If
clear, Demand mode is not active in the transmitting system.
z Reserved (R): This byte must be set to zero on transmit, and ignored on receipt.
z Detect Mult: Detection time multiplier.
z Length: Length of the BFD Control packet, in bytes.
z My Discriminator: A unique, nonzero discriminator value generated by the transmitting
system, used to demultiplex multiple BFD sessions between the same pair of systems.
z Your Discriminator: It is the discriminator received from the corresponding remote system.
This field reflects back the received value of My Discriminator, or is 0 if that value is
unknown.
z Desired Min TX Interval: This is the minimum interval, in microseconds, that the local
system would like to use when transmitting BFD Control packets. The value zero is
reserved.