The 7705 SAR supports LSP ping and LSP trace on a BGP IPv4 LSP resolved over an SR-OSPF IPv4 tunnel, an SR-ISIS IPv4 tunnel, or an SR-TE IPv4 LSP.
The following are output examples of LSP trace for a hierarchical tunnel consisting of a BGP IPv4 LSP resolved over an SR-OSPF IPv4 tunnel, an SR-ISIS IPv4 tunnel, or an SR-TE IPv4 LSP (OSPF or IS-IS). The topology for the examples is shown in Figure: Testing MPLS OAM for BGP over SR-OSPF, SR-TE (OSPF), SR-ISIS, and SR-TE (ISIS).
Figure: Testing MPLS OAM for BGP over SR-OSPF, SR-TE (OSPF), SR-ISIS, and SR-TE (ISIS)
Output example for BGP over SR-OSPF:
*A:Dut-A# oam lsp-trace bgp-label prefix 11.21.1.6/32 detail downstream-map-tlv ddmap path-destination 127.1.1.
lsp-trace to 11.21.1.6/32: 0 hops min, 0 hops max, 168 byte packets
1 10.20.1.3 rtt=2.31ms rc=8(DSRtrMatchLabel) rsc=2
DS 1: ipaddr=10.10.5.5 ifaddr=10.10.5.5 iftype=ipv4Numbered MRU=1496
label[1]=27506 protocol=5(OSPF)
label[2]=13199 protocol=2(BGP)
DS 2: ipaddr=10.10.11.4 ifaddr=10.10.11.4 iftype=ipv4Numbered MRU=1496
label[1]=27406 protocol=5(OSPF)
label[2]=262137 protocol=2(BGP)
DS 3: ipaddr=10.10.11.5 ifaddr=10.10.11.5 iftype=ipv4Numbered MRU=1496
label[1]=27506 protocol=5(OSPF)
label[2]=262137 protocol=2(BGP)
2 10.20.1.4 rtt=4.91ms rc=8(DSRtrMatchLabel) rsc=2
DS 1: ipaddr=10.10.9.6 ifaddr=10.10.9.6 iftype=ipv4Numbered MRU=1492
label[1]=27606 protocol=5(OSPF)
label[2]=262137 protocol=2(BGP)
3 10.20.1.6 rtt=4.73ms rc=3(EgressRtr) rsc=2
3 10.20.1.6 rtt=5.44ms rc=3(EgressRtr) rsc=1
*A:Dut-A#
Output example for BGP over SR-TE (OSPF):
*A:Dut-A# oam lsp-trace bgp-label prefix 11.21.1.6/32 detail downstream-map-tlv ddmap path-destination 127.1.1.1
lsp-trace to 11.21.1.6/32: 0 hops min, 0 hops max, 236 byte packets
1 10.20.1.2 rtt=2.13ms rc=3(EgressRtr) rsc=4
1 10.20.1.2 rtt=1.79ms rc=8(DSRtrMatchLabel) rsc=3
DS 1: ipaddr=10.10.4.4 ifaddr=10.10.4.4 iftype=ipv4Numbered MRU=1492
label[1]=3 protocol=5(OSPF)
label[2]=262104 protocol=5(OSPF)
label[3]=262139 protocol=2(BGP)
2 10.20.1.4 rtt=3.24ms rc=3(EgressRtr) rsc=3
2 10.20.1.4 rtt=4.46ms rc=8(DSRtrMatchLabel) rsc=2
DS 1: ipaddr=10.10.9.6 ifaddr=10.10.9.6 iftype=ipv4Numbered MRU=1492
label[1]=3 protocol=5(OSPF)
label[2]=262139 protocol=2(BGP)
3 10.20.1.6 rtt=6.24ms rc=3(EgressRtr) rsc=2
3 10.20.1.6 rtt=6.18ms rc=3(EgressRtr) rsc=1
*A:Dut-A#
Output example for BGP over SR-ISIS:
A:Dut-A# oam lsp-trace bgp-label prefix 11.21.1.6/32 detail downstream-map-tlv ddmap path-destination 127.1.1.1
lsp-trace to 11.21.1.6/32: 0 hops min, 0 hops max, 168 byte packets
1 10.20.1.3 rtt=3.33ms rc=8(DSRtrMatchLabel) rsc=2
DS 1: ipaddr=10.10.5.5 ifaddr=10.10.5.5 iftype=ipv4Numbered MRU=1496
label[1]=28506 protocol=6(ISIS)
label[2]=262139 protocol=2(BGP)
DS 2: ipaddr=10.10.11.4 ifaddr=10.10.11.4 iftype=ipv4Numbered MRU=1496
label[1]=28406 protocol=6(ISIS)
label[2]=262139 protocol=2(BGP)
DS 3: ipaddr=10.10.11.5 ifaddr=10.10.11.5 iftype=ipv4Numbered MRU=1496
label[1]=28506 protocol=6(ISIS)
label[2]=262139 protocol=2(BGP)
2 10.20.1.4 rtt=5.12ms rc=8(DSRtrMatchLabel) rsc=2
DS 1: ipaddr=10.10.9.6 ifaddr=10.10.9.6 iftype=ipv4Numbered MRU=1492
label[1]=28606 protocol=6(ISIS)
label[2]=262139 protocol=2(BGP)
3 10.20.1.6 rtt=8.41ms rc=3(EgressRtr) rsc=2
3 10.20.1.6 rtt=6.93ms rc=3(EgressRtr) rsc=1
Output example for BGP over SR-TE (ISIS):
*A:Dut-A# oam lsp-trace bgp-label prefix 11.21.1.6/32 detail downstream-map-tlv ddmap path-destination 127.1.1.1
lsp-trace to 11.21.1.6/32: 0 hops min, 0 hops max, 248 byte packets
1 10.20.1.2 rtt=2.60ms rc=3(EgressRtr) rsc=4
1 10.20.1.2 rtt=2.29ms rc=8(DSRtrMatchLabel) rsc=3
DS 1: ipaddr=10.10.4.4 ifaddr=10.10.4.4 iftype=ipv4Numbered MRU=1492
label[1]=3 protocol=6(ISIS)
label[2]=262094 protocol=6(ISIS)
label[3]=262139 protocol=2(BGP)
2 10.20.1.4 rtt=4.04ms rc=3(EgressRtr) rsc=3
2 10.20.1.4 rtt=4.38ms rc=8(DSRtrMatchLabel) rsc=2
DS 1: ipaddr=10.10.9.6 ifaddr=10.10.9.6 iftype=ipv4Numbered MRU=1492
label[1]=3 protocol=6(ISIS)
label[2]=262139 protocol=2(BGP)
3 10.20.1.6 rtt=6.64ms rc=3(EgressRtr) rsc=2
3 10.20.1.6 rtt=5.94ms rc=3(EgressRtr) rsc=1
Assuming the topology in Figure: Topology Example for BGP Over SR-ISIS in Inter-AS Option C and BGP Over SR-TE (ISIS) in Inter-AS Option C has the addition of an EBGP peering between nodes B and C, the BGP IPv4 LSP spans the AS boundary and resolves to an SR-ISIS tunnel or an SR-TE LSP within each AS.
Figure: Topology Example for BGP Over SR-ISIS in Inter-AS Option C and BGP Over SR-TE (ISIS) in Inter-AS Option C
Output example for BGP over SR-ISIS in inter-AS option C:
*A:Dut-A# oam lsp-trace bgp-label prefix 11.20.1.6/32 src-ip-address 11.20.1.1 detail downstream-map-tlv ddmap path-destination 127.1.1.1
lsp-trace to 11.20.1.6/32: 0 hops min, 0 hops max, 168 byte packets
1 10.20.1.2 rtt=2.69ms rc=3(EgressRtr) rsc=2
1 10.20.1.2 rtt=3.15ms rc=8(DSRtrMatchLabel) rsc=1
DS 1: ipaddr=10.10.3.3 ifaddr=10.10.3.3 iftype=ipv4Numbered MRU=0
label[1]=262127 protocol=2(BGP)
2 10.20.1.3 rtt=5.26ms rc=15(LabelSwitchedWithFecChange) rsc=1
DS 1: ipaddr=10.10.5.5 ifaddr=10.10.5.5 iftype=ipv4Numbered MRU=1496
label[1]=26506 protocol=6(ISIS)
label[2]=262139 protocol=2(BGP)
fecchange[1]=PUSH fectype=SR Ipv4 Prefix prefix=10.20.1.6
remotepeer=10.10.5.5
3 10.20.1.5 rtt=7.08ms rc=8(DSRtrMatchLabel) rsc=2
DS 1: ipaddr=10.10.10.6 ifaddr=10.10.10.6 iftype=ipv4Numbered MRU=1496
label[1]=26606 protocol=6(ISIS)
label[2]=262139 protocol=2(BGP)
4 10.20.1.6 rtt=9.41ms rc=3(EgressRtr) rsc=2
4 10.20.1.6 rtt=9.53ms rc=3(EgressRtr) rsc=1
Output example for BGP over SR-TE (ISIS) in inter-AS option C:
*A:Dut-A# oam lsp-trace bgp-label prefix 11.20.1.6/32 src-ip-address 11.20.1.1 detail downstream-map-tlv ddmap path-destination 127.1.1.1
lsp-trace to 11.20.1.6/32: 0 hops min, 0 hops max, 168 byte packets
1 10.20.1.2 rtt=2.77ms rc=3(EgressRtr) rsc=2
1 10.20.1.2 rtt=2.92ms rc=8(DSRtrMatchLabel) rsc=1
DS 1: ipaddr=10.10.3.3 ifaddr=10.10.3.3 iftype=ipv4Numbered MRU=0
label[1]=262127 protocol=2(BGP)
2 10.20.1.3 rtt=4.82ms rc=15(LabelSwitchedWithFecChange) rsc=1
DS 1: ipaddr=10.10.5.5 ifaddr=10.10.5.5 iftype=ipv4Numbered MRU=1496
label[1]=26505 protocol=6(ISIS)
label[2]=26506 protocol=6(ISIS)
label[3]=262139 protocol=2(BGP)
fecchange[1]=PUSH fectype=SR Ipv4 Prefix prefix=10.20.1.6
remotepeer=0.0.0.0 (Unknown)
fecchange[2]=PUSH fectype=SR Ipv4 Prefix prefix=10.20.1.5
remotepeer=10.10.5.5
3 10.20.1.5 rtt=7.10ms rc=3(EgressRtr) rsc=3
3 10.20.1.5 rtt=7.45ms rc=8(DSRtrMatchLabel) rsc=2
DS 1: ipaddr=10.10.10.6 ifaddr=10.10.10.6 iftype=ipv4Numbered MRU=1496
label[1]=26606 protocol=6(ISIS)
label[2]=262139 protocol=2(BGP)
4 10.20.1.6 rtt=9.23ms c=3(EgressRtr) rsc=2
4 10.20.1.6 rtt=9.46ms rc=3(EgressRtr) rsc=1
*A:Dut-A