Operational Commands

OAM CFM Show Commands

Show OAM CFM Session

The command displays the CFM session information.

show oam cfm session <option>

Option Description

detail

Shows detailed information about CFM sessions.

interface

Shows CFM session details for the specified logical interface.

summary <…​>

Displays summary of CFM sessions. The session summary shows the total number of CFM sessions, indicating how many sessions are up or down, making it easier to monitor operations.

Example: CFM session

supervisor@rtbrick: op> show oam cfm session
Session                   Interface             Maintenance Domain    Maintenance Association   Local MEP   Remote MEP  State
CFM_DEFAULT_LINK1         ifl-0/1/64/100        MD_BNG                MA_DEFAULT_100            1000        2000        Up
CFM_DEFAULT_LINK2         ifl-0/1/66/0          MD_BNG                MA_DEFAULT_200            1001        2001        Up

Example: CFM session details for a specific interface

supervisor@rtbrick: op> show oam cfm session interface ifl-0/1/64/100
Session name: CFM_DEFAULT_LINK1, Interface name: ifl-0/1/64/100, CFM state: Up
  Maintenance domain name: MD_BNG, Format: None
    Maintenance association name: MA_DEFAULT_100, Format: Character string
    Remote MAC address: e8:c5:7a:8f:55:b8
    Level: 2, Continuity check interval: 1s, Loss threshold: 3 Frames
    Local endpoint ID: 1000, Remote endpoint ID: 2000
    CCM packet received count: 9, Flap count: 0
    Last error: None

Example: Detailed view of CFM session

supervisor@rtbrick: op> show oam cfm session detail
Session name: CFM_DEFAULT_LINK1, Interface name: ifl-0/1/64/100, CFM state: Up
  Maintenance domain name: MD_BNG, Format: None
    Maintenance association name: MA_DEFAULT_100, Format: Character string
    Remote MAC address: e8:c5:7a:8f:55:b8
    Level: 2, Continuity check interval: 1s, Loss threshold: 3 Frames
    Local endpoint ID: 1000, Remote endpoint ID: 2000
    CCM packet received count: 10, Flap count: 0
    Last error: None
Session name: CFM_DEFAULT_LINK2, Interface name: ifl-0/1/66/0, CFM state: Up
  Maintenance domain name: MD_BNG, Format: None
    Maintenance association name: MA_DEFAULT_200, Format: Character string
    Remote MAC address: e8:c5:7a:8f:55:c0
    Level: 2, Continuity check interval: 1s, Loss threshold: 3 Frames
    Local endpoint ID: 1001, Remote endpoint ID: 2001
    CCM packet received count: 10, Flap count: 0
    Last error: None

Example for Point to Multipoint CFM sessions

supervisor@rtbrick: op> show oam cfm session
Session                   Interface             Maintenance Domain    Maintenance Association   Local MEP   Remote MEP  State
CFM_R3                    ifl-0/1/27/0          BNG                   MA_BNG                    3100        2100        Down
CFM_R4                    ifl-0/1/27/0          BNG                   MA_BNG                    4100        2100        Down

Detailed view of Point to Multipoint CFM sessions.

supervisor@rtbrick: op> show oam cfm session detail
Session name: CFM_R3, Interface name: ifl-0/1/27/0, CFM state: Down
  Maintenance domain name: BNG, Format: None
    Maintenance association name: MA_BNG, Format: Character string
    Remote MAC address: 00:00:00:00:00:00
    Level: 2, Continuity check interval: 1s, Loss threshold: 3 Frames
    Local endpoint ID: 3100, Remote endpoint ID: 2100
    CCM packet received count: 0, Flap count: 0
    Last error: Interface down
Session name: CFM_R4, Interface name: ifl-0/1/27/0, CFM state: Down
  Maintenance domain name: BNG, Format: None
    Maintenance association name: MA_BNG, Format: Character string
    Remote MAC address: 00:00:00:00:00:00
    Level: 2, Continuity check interval: 1s, Loss threshold: 3 Frames
    Local endpoint ID: 4100, Remote endpoint ID: 2100
    CCM packet received count: 0, Flap count: 0
    Last error: Interface down

Show OAM CFM Statistics

This command displays OAM CFM statistics.

show oam cfm statistics <option>

Option Description

-

Without any option, the command shows CFM statistics for all interfaces.

interface

Shows CFM statistics for the specified logical interface.

Example: CFM statistics for all interfaces

supervisor@rtbrick.net: cfg> show oam cfm statistics

Interface: ifl-0/0/0/1
  Received Statistics:
    Total packets                      : 1
    Invalid ethernet type              : 0
    Length error                       : 0
    CFM packets                        : 1
    Cross-connect CCM received         : 0
    Invalid CCM version                : 0
    RDI received                       : 0
    Continuity check interval mismatch : 0
    Invalid MD name format             : 0
    Invalid MA name format             : 0
  Sent Statistics:
    Total packets                      : 2
Interface: ifl-0/0/1/1
  Received Statistics:
    Total packets                      : 1
    Invalid ethernet type              : 0
    Length error                       : 0
    CFM packets                        : 1
    Cross-connect CCM received         : 0
    Invalid CCM version                : 0
    RDI received                       : 0
    Continuity check interval mismatch : 0
    Invalid MD name format             : 0
    Invalid MA name format             : 0
  Sent Statistics:
    Total packets                      : 2

Example: CFM statistics for a specific interface

supervisor@rtbrick.net: cfg> show oam cfm statistics interface ifl-0/0/0/1
Interface: ifl-0/0/0/1
  Received Statistics:
    Total packets                      : 205
    Invalid ethernet type              : 0
    Length error                       : 0
    CFM packets                        : 205
    Cross-connect CCM received         : 0
    Invalid CCM version                : 0
    RDI received                       : 0
    Continuity check interval mismatch : 0
    Invalid MD name format             : 0
    Invalid MA name format             : 0
  Sent Statistics:
    Total packets                      : 206

CFM Session Summary

Display summary of CFM sessions and enable filtering by operational state. The session summary shows the total number of CFM sessions, indicating how many sessions are up or down, making it easier to monitor operations.

Syntax:

show oam cfm session summary
show oam cfm session state <state>
show oam cfm session state <state> detail

The following table provides command options and descriptions.

Attribute Description

summary

Displays the total number of CFM sessions, including the number of sessions that are up and down.

state <state>

Displays CFM sessions for the specified operational state.

<state> detail

Displays detailed information for CFM sessions for the specified state.

Example:

The following example displays a summary of the total number of CFM sessions and their current Up/Down status.

supervisor@rtbrick.net: cfg> show oam cfm session summary
Total Sessions : 5
Up Sessions    : 4
Down Sessions  : 1

The following example displays CFM sessions that are currently in the Down state.

supervisor@rtbrick.net: cfg> show oam cfm session state Down
Session             Interface       Maintenance Domain   Maintenance Association  Local MEP   Remote MEP  State
CFM_DEFAULT_LINK4   ifl-0/0/2/103   BNG                  CFM_DEFAULT_LINK4        323         103         Down

The following example displays detailed information about CFM sessions in the Down state, including endpoint details, CCM statistics, flap count, and the last error.

supervisor@rtbrick.net: cfg> show oam cfm session state Down detail
Session name: CFM_DEFAULT_LINK4, Interface name: ifl-0/0/2/103, CFM state: Down
  Maintenance domain name: BNG, Format: None
    Maintenance association name: CFM_DEFAULT_LINK4, Format: Character string
    Remote MAC address: 92:5e:e4:b8:dd:ab
    Level: 2, Continuity check interval: 1s, Loss threshold: 3 Frames
    Local endpoint ID: 323, Remote endpoint ID: 103
    CCM packet received count: 68, Flap count: 2
    Last error: Session timed-out

CFM Clear Commands

Clear OAM CFM Statistics

Clear commands allow to reset operational states.

Syntax:

clear oam cfm statistics <option>

Option Description

-

Clears all the CFM statistics.

<interface>

Clears statistics for the specified interface.

Example commands:

clear oam cfm statistics
clear oam cfm statistics interface <interface>