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Home Documentation Junos OS Junos CLI Reference CLI Reference S

Junos CLI Reference

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show oam ethernet connectivity-fault-management linktrace path-database

date_range 19-Nov-23
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Syntax

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show oam ethernet connectivity-fault-management linktrace path-database mac-address maintenance-association ma-name maintenance-domain md-name

Description

On M320, MX Series, T320, and T640 routers, display IEEE 802.1ag Operation, Administration, and Management (OAM) connectivity fault management maintenance linktrace database information.

Options

mac-address

Display connectivity fault management path database information for the specified MAC address of the remote host.

maintenance-association ma-name

Display connectivity fault management path database information for the specified maintenance association.

maintenance-domain md-name

Display connectivity fault management path database information for the specified maintenance domain.

Required Privilege Level

view

Output Fields

Table 1 lists the output fields for the show oam ethernet connectivity-fault-management linktrace path-database command. Output fields are listed in the approximate order in which they appear.

Table 1: show oam ethernet connectivity-fault-management linktrace path-database Output Fields

Field Name

Field Description

Linktrace to

MAC address of the 802.1ag node to which the linktrace message is targeted.

Interface

Interface used by the local MEP to send the linktrace message (LTM).

Maintenance Domain

Maintenance domain identifier specified in the traceroute command.

Maintenance Association

Maintenance association identifier specified in the traceroute command.

Level

Maintenance domain level configured for the maintenance domain.

Local Mep

MEP identifier of the local MEP originating the linktrace.

Hop

Sequential hop count of the linktrace path.

TTL

Number of hops remaining in the linktrace message (LTM). The time to live (TTL) is decremented at each hop.

Source MAC address

MAC address of the 802.1ag node responding to the LTM or

the source MAC address of the LTR.

Next hop MAC address

MAC address of the egress interface of the node to which the LTM is forwarded or

the next-hop MAC address derived from the next egress identifier in the Egress-ID TLV of the LTR PDU.

Transaction Identifier

4-byte identifier maintained by the MEP. Each LTM uses a transaction identifier. The transaction identifier is maintained globally across all maintenance domains. Use the transaction identifier to match an incoming linktrace responses (LTR), with a previously sent LTM.

Sample Output

show oam ethernet connectivity-fault- management linktrace path-database

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user@host> show oam ethernet connectivity-fault-management linktrace path-database     maintenance-domain MD1 maintenance-association MA1 00:01:02:03:04:05
Linktrace to 00:01:02:03:04:05, Interface : ge-5/0/0.0
       Maintenance Domain: MD1, Level: 7
       Maintenance Association: MA1, Local Mep: 1

        Hop     TTL      Source MAC address        Next hop MAC address
       Transaction Identifier:100001
       1       63       00:00:aa:aa:aa:aa         00:00:ab:ab:ab:ab
       2       62       00:00:bb:bb:bb:bb         00:00:bc:bc:bc:bc
       3       61       00:00:cc:cc:cc:cc         00:00:cd:cd:cd:cd
       4       60       00:01:02:03:04:05         00:00:00:00:00:00

show oam ethernet connectivity-fault- management linktrace path-database (Two traceroute Commands)

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user@host> traceroute ethernet maintenance-domain md1 maintenance-association ma1 00:01:02:03:04:05
 Linktrace to 00:01:02:03:04:05, Interface : ge-5/0/0.0
       Maintenance Domain: MD1, Level: 7
       Maintenance Association: MA1, Local Mep: 1

       Hop     TTL      Source MAC address        Next hop MAC address
       Transaction Identifier:100002
       1       63       00:00:aa:aa:aa:aa         00:00:ab:ab:ab:ab
       2       62       00:00:bb:bb:bb:bb         00:00:bc:bc:bc:bc
       3       61       00:00:cc:cc:cc:cc         00:00:cd:cd:cd:cd
       4       60       00:01:02:03:04:05         00:00:00:00:00:00

       Transaction Identifier:100003
       1       63       00:00:aa:aa:aa:aa         00:00:ab:ab:ab:ab
       2       62       00:00:bb:bb:bb:bb         00:00:bc:bc:bc:bc
       3       61       00:00:cc:cc:cc:cc         00:00:cd:cd:cd:cd
       4       60       00:01:02:03:04:05         00:00:00:00:00:00

Release Information

Command introduced in Junos OS Release 9.0.

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