MPLS-TP enhancements for on-demand connectivity verification

The transport profile (TP) of MPLS supports two additional channel types for the default LSPING channel type. These additional channel types provide on-demand connectivity verification (CV) with and without IP/UDP encapsulation. With this feature, the following channel types are supported in the MPLS-TP mode:

• On-demand CV (0x0025) - This channel type is a new pseudowire channel type and is used for on-demand CV without IP/UDP encapsulation, where IP addressing is not available or non-IP encapsulation is preferred.
• IPv4 (0x0021) - This channel type uses the IP/UDP encapsulation and provides interoperability support with other vendor devices using IP addressing.
• LSPING (0x0008) - This is the default channel type for Junos OS, and the GACH-TLV is used along with this channel type. As per RFC 7026, GACH-TLV is deprecated for 0x0021 and 0x0025 channel types.

To configure a channel type for MPLS-TP, include the lsping-channel-type channel-type statement at the [edit protocols mpls label-switched-path lsp-name oam mpls-tp-mode] and [edit protocols mpls oam mpls-tp-mode] hierarchy levels.