What Are the Possible Causes of the Failure to Establish an LDP Session or LSP?

Created Dec 28, 2015 15:50:13Latest reply Dec 28, 2015 16:35:07 1085 1 0 0
When the switches fail to establish an LDP session or LSP, the possible causes are:
The switches use S series boards that do not support the MPLS feature.
The MPLS feature is unavailable because the license for this feature is not loaded.
The peer device is unreachable, so the LDP session cannot be set up.
The local and remote devices are indirectly connected, not LDP is not enabled between every two devices on the path. A complete LSP cannot be established this case even when the remote session has been established.
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user_2790689  Expert   Created Dec 28, 2015 16:35:07 Helpful(0) Helpful(0)

Thank you.
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