The mpls te cspf disable command disables CSPF calculation when an LSP is being established in a TE tunnel.
The undo mpls te cspf disable command enables CSPF calculation when an LSP is being established in a TE tunnel.
By default, CSPF calculation is enabled when an LSP is being established in a TE tunnel.
Usage Scenario
After CSPF is enabled globally, CSPF calculation is triggered each time an LSP is being established in a TE tunnel. In the inter-AS VPN-Option C scenario, no IGP is configured between two ASs, causing the TEDB to fail to be generated. As a result, CSPF calculation fails to be performed, and inter-area TE tunnels fail to be set up. Run the mpls te cspf disable command on the configured TE tunnel interface to disable CSPF on the TE tunnel, and set up inter-area TE tunnels using direct routes or static routes.
Prerequisites
Configuration Impact
After the mpls te cspf disable command is run, CR-LSP selection functions, such as hop limit, CSPF tie-breaking, and SRLG, will become invalid.
<HUAWEI> system-view [~HUAWEI] mpls [*HUAWEI-mpls] mpls te [*HUAWEI-mpls] mpls te cspf [*HUAWEI-mpls] quit [*HUAWEI] interface Tunnel10 [*HUAWEI-Tunnel10] tunnel-protocol mpls te [*HUAWEI-Tunnel10] mpls te cspf disable