Contents

MPLS OAM commands· 1

ping mpls out-labels· 1

tracert mpls out-labels· 3

 

MPLS OAM commands

Only advanced mode and expert mode support MPLS OAM. For more information about system operating modes, see device management in Fundamentals Configuration Guide.

Layer 3 aggregate interfaces do not support MPLS OAM.

The device does not support MPLS forwarding for tunnel packets.

ping mpls out-labels

Use ping mpls out-labels to verify the MPLS LSP of the specified outgoing labels.

Syntax

ping mpls [ -a source-ip | -c count | -exp exp-value | -h ttl-value | -m wait-time | -r reply-mode | -rtos tos-value | -s packet-size | -t time-out | -v ] * out-labels out-label-value&<1-5> interface interface-type interface-number [ nexthop nexthop-address ]

Views

Any view

Predefined user roles

network-admin

Parameters

-a source-ip: Specifies the source address of MPLS echo request packets. If you do not specify this option, the device uses the primary IP address of the outgoing interface as the source address of MPLS echo requests.

-c count: Specifies the number of MPLS echo request packets to be sent with the same destination address in the IP header. The value range is 1 to 4294967295. The default is 5.

-exp exp-value: Specifies the EXP value of MPLS echo request packets, in the range of 0 to 7. The default is 0.

-h ttl-value: Specifies the TTL value of MPLS echo request packets, in the range of 1 to 255. The default is 255.

-m wait-time: Specifies the interval for sending MPLS echo request packets, in the range of 1 to 10000 milliseconds. The default is 200 milliseconds.

-r reply-mode: Specifies the reply mode of the receiver in response to MPLS echo request packets. The reply-mode argument can be 1, 2, 3, or 4. The default is 2.

·     1—Do not reply.

·     2—Reply by using a UDP packet.

·     3—Reply by using a UDP packet that carries the Router Alert option.

·     4—Reply by using a VCCV packet. The reply mode 4 is not available for MPLS LSP connectivity verification. If the reply mode 4 is specified, the remote end does not reply.

-rtos tos-value: Specifies the ToS value in the IP header of an MPLS echo reply packet. The value range is 0 to 7, and the default value is 6.

-s packet-size: Specifies the length (excluding the IP header and UDP header) of an MPLS echo request packet. The value for the packet-size argument is 65 to 8100 bytes, and the default is 100 bytes.

-t time-out: Specifies the timeout interval for the reply to an MPLS echo request. The value range is 0 to 65535 milliseconds, and the default is 2000 milliseconds.

-v: Displays detailed reply information. If you do not specify this keyword, the command displays brief reply information.

out-labels out-label-value&<1-5>: Specifies a space-separated list of up to five outgoing labels, corresponding to the labels from top to bottom in the label stack. The value range for the out-label-value argument is 0, 3, and 16 to 1048575.

interface interface-type interface-number: Specifies the outgoing interface by the interface type and number.

nexthop nexthop-address: Specifies the next hop IP address.

Usage guidelines

To verify connectivity of a specific LSP, first execute the display mpls lsp command to identify the outgoing interface and next hop for the outgoing labels to be specified.

Examples

# In an LDP network, verify the connectivity of the LSP with outgoing label 2173, outgoing interface GigabitEthernet 1/0/1, and next hop IP address 10.1.1.2/32.

<Sysname> ping mpls out-labels 2173 interface gigabitethernet 1/0/1 nexthop 10.1.1.2

MPLS ping out-labels 2173 with 100 bytes of data:

100 bytes from 20.1.1.2: Sequence=1 time=1 ms

100 bytes from 20.1.1.2: Sequence=2 time=1 ms

100 bytes from 20.1.1.2: Sequence=3 time=1 ms

100 bytes from 20.1.1.2: Sequence=4 time=1 ms

100 bytes from 20.1.1.2: Sequence=5 time=1 ms

 

--- Ping statistics for out-labels 2173 ---

5 packets transmitted, 5 packets received, 0.0% packet loss

Round-trip min/avg/max = 1/1/1 ms

<Sysname>%Oct 11 09:26:52:882 2018 Sysname LSPV/6/LSPV_PING_STATIS_INFO: Ping statistics for out-labels 2173: 5 packets transmitted, 5 packets received, 0.0% packets loss, round-trip min/avg/max = 1/1/1 ms.

Table 1 Command output

Field	Description
MPLS ping out-labels out-label-value with 100 bytes of data	Verify LSP connectivity for the specified outgoing labels (out-label-value) by sending 100-byte MPLS echo requests.
100 bytes from 20.1.1.2	Received a 100-byte reply from 20.1.1.2.
Sequence	Sequence number of the reply, for determination of packet loss, disorder, or duplicate.
time	Packet round-trip delay.
Return Code	Return code. The number in parentheses represents a return subcode. ·     1—The received MPLS echo request packet has content errors. ·     2—The packet contains an unsupported TLV. ·     3—Reply from the egress node. ·     5—Unmatching downstream mapping. ·     6—The upstream did not provide the outgoing interface. ·     8—Reply from the label switching node. ·     10—The outgoing label for the FEC is inconsistent with that in the packet label stack. ·     11—The label in the packet label stack does not have a matching forwarding entry. ·     12—The protocol type of the FEC is inconsistent with that in the label forwarding table for the packet.
Ping statistics for out-labels	LSP verification statistics.
packets transmitted	Number of MPLS echo requests sent.
packets received	Number of MPLS echo replies received.
packet loss	Percentage of unreplied packets to total request packets.
Round-trip min/avg/max	Minimum, average, and maximum round-trip delay.

‌

tracert mpls out-labels

Use tracert mpls out-labels to trace MPLS LSPs of the specified outgoing labels from the ingress node to the egress node of the LSPs. You can locate the error node according to the reply information.

Syntax

tracert mpls [ -a source-ip | -exp exp-value | -h ttl-value | -r reply-mode | -rtos tos-value | -t time-out | -v | fec-check ]* out-labels out-label-value&<1-5> interface interface-type interface-number [ nexthop nexthop-address ]

Views

Any view

Predefined user roles

network-admin

Parameters

-a source-ip: Specifies the source address of MPLS echo request packets. If you do not specify this option, the device uses the primary IP address of the outgoing interface as the source address of MPLS echo requests.

-exp exp-value: Specifies the EXP value of MPLS echo request packets, in the range of 0 to 7. The default is 0.

-h ttl-value: Specifies the maximum TTL value of MPLS echo request packets (the maximum number of hops to be inspected). The value range for the ttl-value argument is 1 to 255, and the default is 30.

-r reply-mode: Specifies the reply mode of the receiver in response to MPLS echo request packets. The reply-mode argument can be 2 or 3. The default is 2.

·     2—Reply by using a UDP packet.

·     3—Reply by using a UDP packet that carries the Router Alert option.

-rtos tos-value: Specifies the ToS value in the IP header of an MPLS echo reply packet. The value range is 0 to 7, and the default value is 6.

-t time-out: Specifies the timeout interval for the reply to an MPLS echo request. The value range is 0 to 65535 milliseconds, and the default is 2000 milliseconds.

-v: Displays detailed reply information. If you do not specify this keyword, the command displays brief reply information.

out-labels out-label-value&<1-5>: Specifies a space-separated list of up to five outgoing labels, corresponding to the labels from top to bottom in the label stack. The value range for the out-label-value argument is 0, 3, and 16 to 1048575.

interface interface-type interface-number: Specifies the outgoing interface by the interface type and number.

nexthop nexthop-address: Specifies the next hop IP address.

Usage guidelines

To trace a specific LSP, first execute the display mpls lsp command to identify the outgoing interface and next hop for the outgoing labels to be specified.

Examples

# In an LDP network, trace the path of the LSP with outgoing label 2173, outgoing interface GigabitEthernet 1/0/1, and next hop IP address 10.1.1.2/32.

<Sysname> tracert mpls out-labels 2173 interface gigabitethernet 1/0/1 nexthop 10.1.1.2

MPLS trace route out-labels 2173

  TTL   Replier            Time    Type      Downstream

  0                                Ingress   10.1.1.2/[2173]

  1     10.1.1.2           1 ms    Transit   20.1.1.2/[1040127]

  2     20.1.1.2           1 ms    Egress

Table 2 Command output

Field	Description
MPLS trace route out-labels out-label-value	Trace the LSPs for the specified outgoing labels.
TTL	Number of hops.
Replier	IP address of the LSR that replied the request.
Time	Packet round-trip delay, in milliseconds.
Type	LSR type: Ingress, Transit, or Egress.
Downstream	Address of the downstream LSR and the outgoing label (label assigned by the downstream LSR).
Return Code	Return code. The number in parentheses represents a return subcode. ·     1—The received MPLS echo request packet has content errors. ·     2—The packet contains an unsupported TLV. ·     3—Reply from the egress node. ·     5—Unmatching downstream mapping. ·     6—The upstream did not provide the outgoing interface. ·     8—Reply from the label switching node. ·     10—The outgoing label for the FEC is inconsistent with that in the packet label stack. ·     11—The label in the packet label stack does not have a matching forwarding entry. ·     12—The protocol type of the FEC is inconsistent with that in the label forwarding table for the packet.