The mpls te reverse-lsp binding-sid command sets a binding SID for a reverse SR-MPLS TE tunnel.
The undo mpls te reverse-lsp binding-sid command deletes a binding SID for a reverse SR-MPLS TE tunnel.
By default, no binding SID is set for a reverse SR-MPLS TE tunnel.
Usage Scenario
A forward LSP and a reverse LSP between two nodes are established. Each LSP is bound to the ingress of its reverse CR-LSP. The two LSPs then form an associated bidirectional tunnel. The associated bidirectional tunnel is primarily used to prevent traffic congestion. If a fault occurs on one end, the other end is notified of the fault so that both ends trigger traffic switchovers, which ensures that traffic transmission is uninterrupted.
To set a binding SID for a reverse LSP in an SR-MPLS TE tunnel, run the mpls te reverse-lsp binding-sid command. Using binding BIDs reduces the number of labels in a label stack on an NE, which helps build a large-scale network. The controller uses both binding SIDs and BGP peer SIDs to compute a path over which an inter-AS E2E SR-MPLS TE tunnel is established.Precautions
Binding SIDs are set only on SR-MPLS TE tunnels. If binding SIDs are referenced by an explicit path, they cannot be modified or deleted, and the tunnel type cannot be modified.
<HUAWEI> system-view [~HUAWEI] mpls lsr-id 1.1.1.1 [*HUAWEI] mpls [*HUAWEI-mpls] mpls te [*HUAWEI-mpls] quit [*HUAWEI] interface tunnel 1 [*HUAWEI-Tunnel1] tunnel-protocol mpls te [*HUAWEI-Tunnel1] mpls te signal-protocol segment-routing [*HUAWEI-Tunnel1] mpls te reverse-lsp binding-sid label 2000