The LSAck packet contains the LSA header information, which is used for acknowledging the receipt of an LSA.

The Hello packet must contain interface ID of sending interface.

The Option field of Hello and DD packets is extended to 24 bits.

The LSR packet contains the complete LSA header information, which is used for request updating LSAs.

The LDP FRR LSP LSP can also be generated from the mapping of the non-lowest hops as the privilege label, and the primary device is configured as the primary device. The table forwarding entry B. LDP IGP IGP LDP IGP is associated with the association. , guaranteed to be consistent with the path

Hand-configured dynamic LDP FRR 32 LDP LSP policy is the default route to the backup device.

LDP GR (Graceful Restart) MPLS uses the feature that the plane and the control plane are separated, and is forwarded when the device protocol is replaced by the restart or the primary or the reverse.

No interruption.

When using the main channel redundancy IPSEC URPF URPF backup link, use the function under the physical interface to build the loose mode.

When using multi-channel redundancy IPSEC tunnel URPF URPF chain backup, enable the function under the interface, you can use the grid mode

When the primary channel redundancy IPSEC URPF URPF backup link is used, the function can be enabled on the physical interface.

When using multi-channel redundancy IPSEC URPF URPF chain backup, enable the function on the physical interface, you can use the grid mode