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show chassis fabric reachability

date_range 19-Nov-23

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Syntax

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show chassis fabric reachability
<detail>
<extended>

Description

(M320, MX240, MX480, MX960, PTX Series, and T Series routers only) Display the current state of fabric destination reachability. Additionally, display the details of the automated actions taken by the system to stop null-route filtering and attempt healing, and the final resolution of the actions.

Options

`none`	Display the state of fabric destination reachability for M320, MX240, MX480, MX960, PTX Series, T640, T1600, and TX Matrix routers, based on periodic reachability checks. Display the system's action phase sequences to stop the null route and attempt healing, and the final resolution.
`detail`	(Optional) Display the details of the actions carried out by the system in the different action phases and the final resolution.
`extended`	(MX2020 and MX2010 Routers only) (Optional) Display the state of fabric destination reachability for MX2010 and MX2020 routers. Note: Fabric mode cannot be changed dynamically for MX-Series devices. Please reboot the MX device after switching the fabric mode.

Required Privilege Level

view

Output Fields

The table lists the output fields for the show chassis fabric reachability command. Output fields are listed in the approximate order in which they appear.

Table 1: show chassis fabric reachability Output Fields
Field Name	Field Description	Level of Output
Fabric reachability status	Display the reachability status of the fabric. `Enabled destinations transitioned to unreachable, Fabric down action in progress`—Some enabled destinations that were originally reachable have become unreachable. The system is trying to stop the fabric down condition and attempt healing. `Enabled destinations reachable`—The enabled destinations are reachable. `Unreachable destinations healed`—The unreachable destinations are healed and are reachable. `Unreachable destinations removed`—The unreachable destinations are removed. `Unreachable destinations present`—Unreachable destinations are present in the system. `Unreachable destinations present due to FPC restart disable configuration`—Unreachable destinations are present as a result of user configuration set to disable FPC restart.	All levels
Unreachable destinations	Number of FPCs that have unreachable destinations.	All levels
Detected on	Date and time when unreachable destinations are detected.	All levels
Reason	Reason for the destination turning unreachable. `Single FPC error`—A single bad FPC is not reachable over the fabric. `Fabric plane error`—Multiple FPCs are not able to forward traffic over the fabric planes.	All levels
Fabric reachability action	Action taken to handle the unreachable destination. `Plane Action`—The healing is attempted only for the fabric planes. `SIB Action`—(PTX Series system only) The healing is attempted only for the SIBs. `Plane and FPC Action`—The healing is attempted both for the fabric planes and the FPCs. `SIB and FPC Action`—(PTX Series system only) The healing is attempted both for the SIBs and the FPCs. `FPC Action`—The healing is attempted only for the bad FPCs.	All levels
Acting on	Current action is being performed on: `Single FPC error`—The current operation is for healing the single bad FPC. `Fabric Plane error`—The current operation is for healing the fabric planes.	All levels
Initial phase	Starting phase for the healing action. `Plane restart`—The fabric planes are restarted. `SIB restart`—(PTX Series system only) The SIBs are restarted. `Plane and FPC restart`—Both the fabric planes and affected FPCs are restarted. `SIB and FPC restart`—(PTX Series system only) SIBs and affected FPCs are restarted.	All levels
Current phase	Current phase for the healing action. `Plane restart`—The fabric planes are restarted. `SIB restart`—(PTX Series system only) The SIBs are restarted. `Plane and FPC restart`—Both the fabric planes and affected FPCs are restarted. `SIB and FPC restart`—(PTX Series system only) Both the SIBs and affected FPCs are restarted. `FPC offline`—The FPCs are turned offline because the previously mentioned healing processes have failed.	All levels
Action started	Date and time when the system fabric down healing attempt is started.	All levels
Plane restart phase	The status of the plane restart phase. `Completed`—The plane restart phase is completed. `In progress`—The plane restart phase is in progress.	`detail`
Phase started	Date and time when the plane restart phase is started.	`detail`
Planes restarted	List of plane numbers restarted by the system.	`detail`
Planes timed out	List of plane numbers that have timed out waiting to be restarted by the system.	`detail`
Planes being offlined / onlined	Planes that are turned offline or turned online by the system, with date and time.	`detail`
Phase completed	Date and time when the plane restart phase is completed.	`detail`
Plane and FPC Restart Phase	Status of the plane and FPC restart phase. `Completed`—The plane and FPC restart phase is completed. `In progress`—The plane and FPC restart phase is in progress.	`detail`
Phase started	Date and time when the plane and FPC restart phase is started.	`detail`
FPC Offline Started	Date and time when the FPC offline action is started.	`detail`
Offlined FPCs	List of FPCs that are turned offline by the system.	`detail`
FPCs timed out	List of FPCs that have timed out waiting to be turned offline by the system.	`detail`
FPC being offlined	FPC that is being turned offline by the system, with date and time.	`detail`
FPC Offline completed	Date and time when the FPC offline action is completed.	`detail`
Plane restarting started	Date and time when the plane restart action is started.	`detail`
Planes restarted	List of planes restarted by the system.	`detail`
Planes being offlined / onlined	Planes that are currently being turned offline or turned online by the system, with date and time.	`detail`
Plane restarting completed	Date and time when the plane restarting action is completed.	`detail`
FPC online started	Date and time when FPC online action is started.	`detail`
Onlined FPCs	List of FPCs that are turned online by the system.	`detail`
FPCs timed out	FPCs that have timed out waiting to be turned online by the system.	`detail`
FPC being onlined	FPC that is being turned online by the system, with date and time.	`detail`
FPC Online completed	Date and time when the action of turning the FPCs online is completed.	`detail`
Phase Completed	Date and time when the plane and FPC restart phase is completed.	`detail`
Phase started	Date and time when the plane and FPC restart phase is started.	`detail`
FPC restart time	Date and time when the FPC restart action is started.	`detail`
FPC restarted	FPC that is restarted by the system, with date and time.	`detail`
Phase Completed	Date and time when the plane and FPC restart phase is completed.	`detail`
FPC Offline Phase	Status of the FPC offline phase. `Completed`— The FPC offline phase is completed. `In progress`—The FPC offline phase is currently in progress.	`detail`
Phase started	Date and time when the FPC offline phase is started.	`detail`
FPC Offline started	Date and time when the FPC offline action is started.	`detail`
Offlined FPCs	List of FPCs turned offline by the system.	`detail`
FPCs timed out	List of FPCs that have timed out waiting to be turned offline by the system.	`detail`
FPC being offlined	FPC that is being turned offline by the system, with date and time.	`detail`
FPC Offline completed	Date and time when the FPC offline action is completed.	`detail`
Phase Completed	Date and time when the FPC offline phase is completed.	`detail`
Action Completed	Date and time when the system fabric down healing attempt is completed.	All levels
Fabric reachability resolution	Status after the healing actions are performed. `Unreachable destinations healed after phase name`—The unreachable destinations are healed after the healing actions are performed. The phase name indicates the last healing phase. `Unreachable destinations removed by FPCs FPC number offline`—The unreachable destinations are removed by turning the FPCs offline. `Unreachable destinations present on FPC/PFE FPC/PFE number`—The unreachable destinations are present on the FPCs or Packet Forwarding Engines and need to be acted upon.	All levels

Sample Output

show chassis fabric reachability (T640 and T1600 routers)
show chassis fabric reachability detail (T640 and T1600 routers)
show chassis fabric reachability (PTX5000 system)
show chassis fabric reachability (MX2020 Router with SFB2)
show chassis fabric reachability detail (MX10003 Router)
show chassis fabric reachability (TX Matrix router)
show chassis fabric reachability detail (TX Matrix router)
show chassis fabric reachability detail (MX960 router)
show chassis fabric reachability (PTX10004, PTX10008, and PTX100016 with PTX10K-LC1202-36MR linecard)
show chassis fabric reachability detail (PTX10004, PTX10008, and PTX100016 with PTX10K-LC1202-36MR line card)