Operating guidelines on SR-ISIS tunnel stitched to LDP FEC

The following operating guidelines apply to lsp-ping and lsp-trace:

Example

The following is an output example of the lsp-trace command of the DDMAP TLV for LDP-to-SR direction (symmetric topology LDP-SR-LDP).

*A:Dut-E# oam lsp-trace prefix 10.20.1.2/32 detail downstream-map-tlv ddmap 
lsp-trace to 10.20.1.2/32: 0 hops min, 0 hops max, 108 byte packets
1  10.20.1.3  rtt=3.25ms rc=15(LabelSwitchedWithFecChange) rsc=1 
     DS 1: ipaddr=10.10.3.2 ifaddr=10.10.3.2 iftype=ipv4Numbered MRU=1496 
           label[1]=26202 protocol=6(ISIS)
           fecchange[1]=POP  fectype=LDP IPv4 prefix=10.20.1.2 remotepeer=0.0.0.0 
(Unknown)
           fecchange[2]=PUSH fectype=SR Ipv4 Prefix prefix=10.20.1.2 remotepeer=10.1
0.3.2 
2  10.20.1.2  rtt=4.32ms rc=3(EgressRtr) rsc=1 
*A:Dut-E#
Example

The following output is an example of the lsp-trace command of the DDMAP TLV for SR-to-LDP direction (symmetric topology LDP-SR-LDP).

*A:Dut-B# oam lsp-trace prefix 10.20.1.5/32 detail downstream-map-tlv ddmap sr-isis 
lsp-trace to 10.20.1.5/32: 0 hops min, 0 hops max, 108 byte packets
1  10.20.1.3  rtt=2.72ms rc=15(LabelSwitchedWithFecChange) rsc=1 
     DS 1: ipaddr=10.11.5.5 ifaddr=10.11.5.5 iftype=ipv4Numbered MRU=1496 
           label[1]=262143 protocol=3(LDP)
           fecchange[1]=POP  fectype=SR Ipv4 Prefix prefix=10.20.1.5 remotepeer=0.0.
0.0 (Unknown)
           fecchange[2]=PUSH fectype=LDP IPv4 prefix=10.20.1.5 remotepeer=10.11.5.5 
2  10.20.1.5  rtt=4.43ms rc=3(EgressRtr) rsc=1