■ ping mpls l3vpn
■ ping mpls rsvp tunnel
■ ping mpls vpls
■ trace mpls ip
■ trace mpls l2transport
■ trace mpls l3vpn
■ trace mpls rsvp tunnel
■ trace mpls vpls
Point-to-Multipoint LSPs Connectivity Verification at Egress Nodes Overview
JUNOSe Software enables you to use the MPLS ping feature to detect data plane
failures in point-to-multipoint MPLS LSPs. The implementation of the RSVP-TE protocol
in JUNOSe Software was previously enhanced to enable you to configure E Series
routers as tunnel-tail or egress nodes for point-to-multipoint MPLS LSPs. You can use
the point-to-multipoint LSP ping functionality, which is available in routers other than
E Series routers, to send echo request packets and receive echo reply packets to test
network connectivity of point-to-multipoint RSVP-TE MPLS LSPs that contain E Series
routers as egress nodes. You cannot use the ping commands for other
point-to-multipoint MPLS applications, such as LDP LSPs because E Series routers do
not support such functionality. In addition, because E Series routers do not support
ingress, transit, or branch label-switched routers (LSR) roles for point-to-multipoint
LSPs, they do not support the point-to-multipoint MPLS ping feature for ingress,
transit, or branch nodes.
Related Topics Ping Extensions for Point-to-Multipoint LSPs Connectivity Verification at Egress
Nodes on page 237
■
■ TLVs and Sub-TLVs Supported for Point-to-Multipoint LSPs Connectivity
Verification at Egress Nodes on page 239
■ Verifying and Troubleshooting MPLS Connectivity on page 367
Ping Extensions for Point-to-Multipoint LSPs Connectivity Verification at Egress
Nodes
To enable detection of data plane failures at egress nodes in point-to-multipoint LSPs,
the MPLS ping extensions in point-to-multipoint LSPs define the following new
sub-type-length-values (TLVs) for the Target FEC Stack TLV and new TLVs:
■ RSVP P2MP IPv4 Session sub-TLV
■ P2MP Responder Identifier TLV
■ Echo Jitter TLV
Point-to-Multipoint LSPs Connectivity Verification at Egress Nodes Overview ■ 237
Chapter 2: MPLS Overview
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