RSVP-based signaling for P2MP LSPs is only supported on the 7210 SAS-Mxp, 7210 SAS-R6, 7210 SAS-R12, 7210 SAS-Sx/S 1/10GE (standalone and standalone-VC mode), and 7210 SAS-T.
P2MP LSP is only supported on the 7210 SAS-Mxp, 7210 SAS-R6, 7210 SAS-R12, 7210 SAS-Sx/S 1/10GE (standalone and standalone-VC mode), and 7210 SAS-T.
Enter the following OAM command to generate an LSP ping:
oam p2mp-lsp-ping lsp-name [p2mp-instance instance-name [s2l-dest-addr ip-address [...up to 5 max]]] [fc fc-name] [size octets] [ttl label-ttl] [timeout timeout] [detail]
An echo request message is sent on the active P2MP instance and replicated in the datapath over all branches of the P2MP LSP instance. By default, all egress LER nodes that are leaves of the P2MP LSP instance reply to the echo request message.
To reduce the scope of the echo reply message, explicitly enter a list of addresses specifying the egress LER nodes that must reply. A maximum of five addresses can be specified in a single execution of the p2mp-lsp-ping command. If all five egress LER nodes are router nodes, they will parse the list of egress LER addresses and reply. In accordance with RFC 6425, only the top address in the P2MP egress identifier TLV is inspected by an egress LER. When interoperating with other implementations, the egress LER router node responds if its address is in the list. Also, if another vendor implementation is the egress LER, only the egress LER matching the top address in the TLV responds.
If the user enters the same egress LER address more than once in a single p2mp-lsp-ping command, the head-end node displays a response to a single address and displays a single error warning message for the duplicates. When queried over SNMP, the head-end node issues a single response trap and issues no trap for the duplicates.
Set the value of the timeout parameter to the time it would take to get a response from all probed leaves under no failure conditions. For that purpose, the parameter range extends to 120 seconds for a p2mp-lsp-ping from a 10-second lsp-ping for P2P LSP. The default value is 10 seconds.
If the user explicitly lists the address of the egress LER for a specific S2L in the ping command, the router head-end node displays a ‟Send_Fail” error when a specific S2L path is down.
Similarly, if the user explicitly lists the address of the egress LER for a specific S2L in the ping command, the router head-end node displays the timeout error when no response is received for an S2L after the expiry of the timeout timer.
Configure a specific value of the ttl parameter to force the echo request message to expire on a router branch node or a bud LSR node. The bud LSR node replies with a downstream mapping TLV for each branch of the P2MP LSP in the echo reply message. A maximum of 16 downstream mapping TLVs can be included in a single echo reply message. The multipath type is set to zero in each downstream mapping TLV and, consequently, does not include egress address information for the reachable egress LER nodes for this P2MP LSP.
If the router ingress LER node receives the new multipath type field with the list of egress LER addresses in an echo reply message from another vendor implementation, the router ignores the message, but this does not cause a processing error for the downstream mapping TLV.
If the ping command expires at an LSR node that is performing a remerge or crossover operation in the datapath between two or more ILMs of the same P2MP LSP, an echo reply message is generated for each copy of the echo request message received by this node.
If the detail parameter is omitted, the command output provides a high-level summary of error and success codes received.
If the detail parameter is specified, the command output displays a line for each replying node, similar to the output of the LSP ping for a P2P LSP.
The display is delayed until all responses are received or the timer configured in the timeout parameter expires. Entering other CLI commands while waiting for the display is not allowed. Use control-C (^C) to stop the ping operation.