test-oam
config
7210 SAS-K 2F6C4T and 7210 SAS-K 3SFP+ 8C
Commands in this context configure Operations, Administration, and Maintenance test parameters.
mpls-time-stamp-format {rfc4379 | unix}
config>test-oam
7210 SAS-K 2F6C4T and 7210 SAS-K 3SFP+ 8C
This command configures the format of the timestamp used by for lsp-ping, lsp-trace, p2mp-lsp-ping and p2mp-lsp-trace, vccv-ping, vccv-trace, and lsp-trace.
If rfc4379 is selected, the timestamp is in seconds and microseconds since 1900, otherwise it is in seconds and microseconds since 1970.
Changing this system-wide setting does not affect tests that are currently in progress, but SAAs start to use the new timestamp when they are restarted. When an SR OS node receives an echo request, it replies with the locally configured timestamp format, and does not try to match the timestamp format of the incoming echo request message.
unix
Specifies the RFC 4379 time stamp format. The time stamp seconds field holds the integral number of seconds since 1-Jan-1900 00:00:00 UTC. The time stamp microseconds field contains a microseconds value in the range 0 to 999999. This setting is used to interoperate with network elements which are fully compliant with RFC 4379, Detecting Multi-Protocol Label Switched (MPLS) Data Plane Failures (such as an SR OS system with the same setting, or any other RFC 4379 compliant router).
Specifies the Unix time stamp format. The time stamps seconds field holds a Unix time, the integral number of seconds since 1-Jan-1970 00:00:00 UTC. The time stamps microseconds field contains a microseconds value in the range 0 to 999999. This setting is used to interoperate with network elements which send and expect a 1970-based timestamp in MPLS Echo Request/Reply PDUs (such as an SR OS system with the same setting, or an SR OS system running software earlier than R8.0 R4).
mpls-echo-request-downstream-map {dsmap | ddmap}
no mpls-echo-request-downstream-map
config>test-oam
7210 SAS-K 2F6C4T and 7210 SAS-K 3SFP+ 8C
This command specifies which format of the downstream mapping TLV to use in all LSP trace packets and LDP tree trace packets originated on this node. The Downstream Mapping (DSMAP) TLV is the original format in RFC 4379 and is the default value. The new Downstream Detailed Mapping (DDMAP) TLV is the new enhanced format specified in RFC 6424.
This command applies to LSP trace of an RSVP P2P LSP, or LDP unicast FEC, and to LDP tree trace of a unicast LDP FEC. It does not apply to LSP trace of an RSVP P2MP LSP which always uses the DDMAP TLV.
The global DSMAP/DDMAP setting impacts the behavior of both OAM LSP trace packets and SAA test packets of type lsp-trace and is used by the sender node when one of the following events occurs:
An SAA test of type lsp-trace is created (not modified) and no value is specified for the per-test downstream-map-tlv {dsmap | ddmap | none} option. In this case, the SAA test downstream-map-tlv value defaults to the global mpls-echo-request-downstream-map value.
An OAM test of type lsp-trace test is executed and no value is specified for the per-test downstream-map-tlv {dsmap | ddmap | none} option. In this case, the OAM test downstream-map-tlv value defaults to the global mpls-echo-request-downstream-map value.
A consequence of the rules above is that a change to the value of mpls-echo-request-downstream-map option does not affect the value inserted in the downstream mapping TLV of existing tests.
Following are the details of the processing of the new DDMAP TLV:
When either the DSMAP TLV or the DDMAP TLV is received in an echo request message, the responder node includes the same type of TLV in the echo reply message with the correct downstream interface information and label stack information.
If an echo request message without a Downstream Mapping TLV (DSMAP or DDMAP) expires at a node which is not the egress for the target FEC stack, the responder node always includes the DSMAP TLV in the echo reply message. This can occur in the following cases:
The user issues a LSP trace from a sender node with a min-ttl value higher than 1 and a max-ttl value lower than the number of hops to reach the egress of the target FEC stack. This is the sender node behavior when the global configuration or the per-test setting of the DSMAP/DDMAP is set to DSMAP.
The user issues a LSP ping from a sender node with a ttl value lower than the number of hops to reach the egress of the target FEC stack. This is the sender node behavior when the global configuration of the DSMAP/DDMAP is set to DSMAP.
The behavior in 2.a is changed when the global configuration or the per-test setting of the Downstream Mapping TLV is set to DDMAP. The sender node includes in this case the DDMAP TLV with the Downstream IP address field set to the all-routers multicast address as per Section 3.3 of RFC 4379. The responder node then bypasses the interface and label stack validation and replies with a DDMAP TLV with the correct downstream information for the target FEC stack.
A sender node never includes the DSMAP or DDMAP TLV in an lsp-ping message.
In addition to performing the same features as the DSMAP TLV, the new DDMAP TLV addresses the following scenarios:
Full validation of an LDP FEC stitched to a BGP IPv4 label route. In this case, the LSP trace message is inserted from the LDP LSP segment or from the stitching point.
Full validation of a BGP IPv4 label route stitched to an LDP FEC. This includes the case of explicit configuration of the LDP-BGP stitching in which the BGP label route is active in Route Table Manager (RTM) and the case of a BGP IPv4 label route resolved to the LDP FEC due to the IGP route of the same prefix active in RTM. In this case, the LSP trace message is inserted from the BGP LSP segment or from the stitching point.
Full validation of an LDP FEC which is stitched to a BGP LSP and stitched back into an LDP FEC. In this case, the LSP trace message is inserted from the LDP segments or the or from the stitching points.
Full validation of an LDP FEC tunneled over an RSVP LSP using LSP trace.
In order to properly check a target FEC which is stitched to another FEC (stitching FEC) of the same or a different type, or which is tunneled over another FEC (tunneling FEC), it is necessary for the responding nodes to provide details about the FEC manipulation back to the sender node. This is achieved via the use of the new FEC stack change sub-TLV in the Downstream Detailed Mapping TLV (DDMAP) defined in RFC 6424.
When the user configures the use of the DDMAP TLV on a trace for an LSP that does not undergo stitching or tunneling operation in the network, the procedures at the sender and responder nodes are the same as in the case of the DSMAP TLV.
This feature however introduces changes to the target FEC stack validation procedures at the sender and responder nodes in the case of LSP stitching and LSP hierarchy. These changes pertain to the processing of the new FEC stack change sub-TLV in the new DDMAP TLV and the new return code of value 15 Label switched with FEC change.
The no form of this command reverts to the default behavior of using the DSMAP TLV in a LSP trace packet and LDP tree trace packet.
dsmap
A B D F E C
o -------- o -------- o -------- o -------- o -------- o
| \______/ | \____________________________/ | \______/ |
\ RSVP / LDP \ RSVP /
\______/ \______/
LDP LDP
Testing LDP FEC of Node C with DSMAP TLV
----------------------------------------
*A:Dut-A#
*A:Dut-A# oam lsp-trace prefix 10.20.1.3/32 downstream-map-tlv dsmap detail
lsp-trace to 10.20.1.3/32: 0 hops min, 0 hops max, 104 byte packets
1 10.20.1.2 rtt=3.90ms rc=8(DSRtrMatchLabel) rsc=1
DS 1: ipaddr=10.10.4.4 ifaddr=10.10.4.4 iftype=ipv4Numbered MRU=1500
label[1]=131068 protocol=3(LDP)
2 10.20.1.4 rtt=5.69ms rc=8(DSRtrMatchLabel) rsc=1
DS 1: ipaddr=10.10.9.6 ifaddr=10.10.9.6 iftype=ipv4Numbered MRU=1500
label[1]=131066 protocol=3(LDP)
3 10.20.1.6 rtt=7.88ms rc=8(DSRtrMatchLabel) rsc=1
DS 1: ipaddr=10.10.10.5 ifaddr=10.10.10.5 iftype=ipv4Numbered MRU=1500
label[1]=131060 protocol=3(LDP)
4 10.20.1.5 rtt=23.2ms rc=8(DSRtrMatchLabel) rsc=1
DS 1: ipaddr=10.10.5.3 ifaddr=10.10.5.3 iftype=ipv4Numbered MRU=1496
label[1]=131071 protocol=3(LDP)
5 10.20.1.3 rtt=12.0ms rc=3(EgressRtr) rsc=1
*A:Dut-A#
Testing LDP FEC of Node C with DDMAP TLV
----------------------------------------
*A:Dut-A# oam lsp-trace prefix 10.20.1.3/32 downstream-map-tlv ddmap detail
lsp-trace to 10.20.1.3/32: 0 hops min, 0 hops max, 136 byte packets
1 10.20.1.2 rtt=4.00ms rc=3(EgressRtr) rsc=2
1 10.20.1.2 rtt=3.48ms rc=8(DSRtrMatchLabel) rsc=1
DS 1: ipaddr=10.10.4.4 ifaddr=10.10.4.4 iftype=ipv4Numbered MRU=1500
label[1]=131068 protocol=3(LDP)
2 10.20.1.4 rtt=5.34ms rc=8(DSRtrMatchLabel) rsc=1
DS 1: ipaddr=10.10.9.6 ifaddr=10.10.9.6 iftype=ipv4Numbered MRU=1500
label[1]=131066 protocol=3(LDP)
3 10.20.1.6 rtt=7.78ms rc=8(DSRtrMatchLabel) rsc=1
DS 1: ipaddr=10.10.10.5 ifaddr=10.10.10.5 iftype=ipv4Numbered MRU=1500
label[1]=131060 protocol=3(LDP)
4 10.20.1.5 rtt=12.8ms rc=15(LabelSwitchedWithFecChange) rsc=1
DS 1: ipaddr=10.10.5.3 ifaddr=10.10.5.3 iftype=ipv4Numbered MRU=1496
label[1]=131054 protocol=4(RSVP-TE)
label[2]=131071 protocol=3(LDP)
fecchange[1]=PUSH fectype=RSVP IPv4 prefix=10.20.1.3 remotepeer=10.10.5.3
5 10.20.1.3 rtt=12.8ms rc=3(EgressRtr) rsc=2
5 10.20.1.3 rtt=13.4ms rc=3(EgressRtr) rsc=1
*A:Dut-A#
D F E C A B
o -------- o -------- o -------- o -------- o -------- o
\_________________/ | \_________________/ | \______/ |
LDP \ RSVP ECA / \ RSVP /
\_________________/ \______/
LDP LDP
Testing LDP FEC of Node B with DDMAP TLV
----------------------------------------
*A:Dut-D#
*A:Dut-D# oam lsp-trace prefix 10.20.1.2/32 downstream-map-tlv ddmap detail
lsp-trace to 10.20.1.2/32: 0 hops min, 0 hops max, 108 byte packets
1 10.20.1.6 rtt=3.17ms rc=8(DSRtrMatchLabel) rsc=1
DS 1: ipaddr=10.10.10.5 ifaddr=10.10.10.5 iftype=ipv4Numbered MRU=1500
label[1]=131065 protocol=3(LDP)
2 10.20.1.5 rtt=8.27ms rc=15(LabelSwitchedWithFecChange) rsc=1
DS 1: ipaddr=10.10.5.3 ifaddr=10.10.5.3 iftype=ipv4Numbered MRU=1496
label[1]=131068 protocol=4(RSVP-TE)
label[2]=131065 protocol=3(LDP)
fecchange[1]=PUSH fectype=RSVP IPv4 prefix=10.20.1.1 remotepeer=10.10.5.3
3 10.20.1.3 rtt=9.50ms rc=8(DSRtrMatchLabel) rsc=2
DS 1: ipaddr=10.10.2.1 ifaddr=10.10.2.1 iftype=ipv4Numbered MRU=1500
label[1]=131068 protocol=4(RSVP-TE)
4 10.20.1.1 rtt=10.4ms rc=3(EgressRtr) rsc=2
4 10.20.1.1 rtt=10.2ms rc=15(LabelSwitchedWithFecChange) rsc=1
DS 1: ipaddr=10.10.1.2 ifaddr=10.10.1.2 iftype=ipv4Numbered MRU=1496
label[1]=131066 protocol=4(RSVP-TE)
label[2]=131071 protocol=3(LDP)
fecchange[1]=PUSH fectype=RSVP IPv4 prefix=10.20.1.2 remotepeer=10.10.1.2
5 10.20.1.2 rtt=13.7ms rc=3(EgressRtr) rsc=2
5 10.20.1.2 rtt=13.6ms rc=3(EgressRtr) rsc=1
*A:Dut-D#
A B C D E F
o ------- o -------- o --------- o ------- o ------- o
\_____/ | \_______/ | \_____/
LDP | RSVP | LDP
|\______________________________/|
| LDP |
\______________________________/
BGP
Testing LDP FEC of Node F with DSMAP TLV
----------------------------------------
*A:Dut-A# *A:Dut-A# oam lsp-trace prefix 10.20.1.6/32 downstream-map-
tlv dsmap detail lsp-trace to 10.20.1.6/32: 0 hops min, 0 hops max, 104 byte packets
1 10.20.1.2 rtt=2.65ms rc=8(DSRtrMatchLabel) rsc=1
2 10.20.1.3 rtt=4.89ms rc=8(DSRtrMatchLabel) rsc=1
3 10.20.1.4 rtt=6.49ms rc=5(DSMappingMismatched) rsc=1
*A:Dut-A#
Testing LDP FEC of Node F with DDMAP TLV
----------------------------------------
*A:Dut-A# oam lsp-trace prefix 10.20.1.6/32 downstream-map-tlv ddmap detail lsp-
trace to 10.20.1.6/32: 0 hops min, 0 hops max, 108 byte packets
1 10.20.1.2 rtt=3.50ms rc=15(LabelSwitchedWithFecChange) rsc=1
DS 1: ipaddr=10.10.3.3 ifaddr=10.10.3.3 iftype=ipv4Numbered MRU=1496
label[1]=131068 protocol=3(LDP)
label[2]=131060 protocol=2(BGP)
fecchange[1]=POP fectype=LDP IPv4 prefix=10.20.1.6 remotepeer=0.0.0.0 (
Unknown)
fecchange[2]=PUSH fectype=BGP IPv4 prefix=10.20.1.6 remotepeer=10.20.1.5
fecchange[3]=PUSH fectype=LDP IPv4 prefix=10.20.1.5 remotepeer=10.10.3.3
2 10.20.1.3 rtt=6.53ms rc=15(LabelSwitchedWithFecChange) rsc=2
DS 1: ipaddr=10.10.11.4 ifaddr=10.10.11.4 iftype=ipv4Numbered MRU=1496
label[1]=131060 protocol=4(RSVP-TE)
label[2]=131070 protocol=3(LDP)
label[3]=131060 protocol=2(BGP)
fecchange[1]=PUSH fectype=RSVP IPv4 prefix=10.20.1.4 remotepeer=10.10.11
.4
3 10.20.1.4 rtt=7.94ms rc=3(EgressRtr) rsc=3
3 10.20.1.4 rtt=6.69ms rc=8(DSRtrMatchLabel) rsc=2
DS 1: ipaddr=10.10.6.5 ifaddr=10.10.6.5 iftype=ipv4Numbered MRU=1500
label[1]=131071 protocol=3(LDP)
label[2]=131060 protocol=2(BGP)
4 10.20.1.5 rtt=10.1ms rc=3(EgressRtr) rsc=2
4 10.20.1.5 rtt=8.97ms rc=15(LabelSwitchedWithFecChange) rsc=1
DS 1: ipaddr=10.10.10.6 ifaddr=10.10.10.6 iftype=ipv4Numbered MRU=1500
label[1]=131071 protocol=3(LDP)
fecchange[1]=POP fectype=BGP IPv4 prefix=10.20.1.6 remotepeer=0.0.0.0 (
Unknown)
fecchange[2]=PUSH fectype=LDP IPv4 prefix=10.20.1.6 remotepeer=10.10.10.
6
5 10.20.1.6 rtt=11.8ms rc=3(EgressRtr) rsc=1 *A:Dut-A#
A B C D E
o ------- o -------- o --------- o ---3--- o
\_____/ | \_______/ |
LDP | RSVP |
|\______________________________/|
| LDP |
\______________________________/
BGP
Testing BGP Label Route of Node E with DDMAP TLV
-------------------------------------------------
*A:Dut-B# oam lsp-trace prefix 10.20.1.5/32 bgp-label downstream-map-
tlv ddmap detail lsp-trace to 10.20.1.5/32: 0 hops min, 0 hops max, 124 byte packets
1 10.20.1.3 rtt=2.35ms rc=15(LabelSwitchedWithFecChange) rsc=2
DS 1: ipaddr=10.10.11.4 ifaddr=10.10.11.4 iftype=ipv4Numbered MRU=1496
label[1]=131060 protocol=4(RSVP-TE)
label[2]=131070 protocol=3(LDP)
label[3]=131070 protocol=2(BGP)
fecchange[1]=PUSH fectype=RSVP IPv4 prefix=10.20.1.4 remotepeer=10.10.11
.4
2 10.20.1.4 rtt=4.17ms rc=3(EgressRtr) rsc=3
2 10.20.1.4 rtt=4.50ms rc=8(DSRtrMatchLabel) rsc=2
DS 1: ipaddr=10.10.6.5 ifaddr=10.10.6.5 iftype=ipv4Numbered MRU=1500
label[1]=131071 protocol=3(LDP)
label[2]=131070 protocol=2(BGP)
3 10.20.1.5 rtt=7.78ms rc=3(EgressRtr) rsc=2
3 10.20.1.5 rtt=6.80ms rc=3(EgressRtr) rsc=1 *A:Dut-B#
B C D E F
o -------- o --------- o ---3--- o ---3--- o
| \_______/ | \_____/
| RSVP |
|\______________________________/|
| LDP |
\______________________________/
BGP
Testing with DDMAP TLV LDP FEC of Node F when stitched to a BGP Label Route
----------------------------------------------------------------------------
*A:Dut-B# oam lsp-trace prefix 10.20.1.6/32 bgp-label downstream-map-
tlv ddmap detail lsp-trace to 10.20.1.6/32: 0 hops min, 0 hops max, 124 byte packets
1 10.20.1.3 rtt=3.21ms rc=15(LabelSwitchedWithFecChange) rsc=2
DS 1: ipaddr=10.10.11.4 ifaddr=10.10.11.4 iftype=ipv4Numbered MRU=1496
label[1]=131060 protocol=4(RSVP-TE)
label[2]=131070 protocol=3(LDP)
label[3]=131060 protocol=2(BGP)
fecchange[1]=PUSH fectype=RSVP IPv4 prefix=10.20.1.4 remotepeer=10.10.11
.4
2 10.20.1.4 rtt=5.50ms rc=3(EgressRtr) rsc=3
2 10.20.1.4 rtt=5.37ms rc=8(DSRtrMatchLabel) rsc=2
DS 1: ipaddr=10.10.6.5 ifaddr=10.10.6.5 iftype=ipv4Numbered MRU=1500
label[1]=131071 protocol=3(LDP)
label[2]=131060 protocol=2(BGP)
3 10.20.1.5 rtt=7.82ms rc=3(EgressRtr) rsc=2
3 10.20.1.5 rtt=6.11ms rc=15(LabelSwitchedWithFecChange) rsc=1
DS 1: ipaddr=10.10.10.6 ifaddr=10.10.10.6 iftype=ipv4Numbered MRU=1500
label[1]=131071 protocol=3(LDP)
fecchange[1]=POP fectype=BGP IPv4 prefix=10.20.1.6 remotepeer=0.0.0.0 (
Unknown)
fecchange[2]=PUSH fectype=LDP IPv4 prefix=10.20.1.6 remotepeer=10.10.10.
6
4 10.20.1.6 rtt=10.2ms rc=3(EgressRtr) rsc=1 *A:Dut-B#