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show chassis fabric topology

Syntax (TX Matrix Router)

Syntax (TX Matrix Plus Router)

Syntax (T4000 Core Router)

Syntax (PTX Series Packet Transport Routers and QFX Series Switches)

Description

(TX Matrix routers only) Display the state of the switching fabric topology for the Switch Interface Board (SIB) connection between the TX Matrix router and the T640 routers.

(TX Matrix Plus routers only) Display the state of the switching fabric topology for the SIB connection between the TX Matrix Plus router and the connected routers.

(T320, T640, T1600, and T4000 routers only) Display the state of the switching fabric topology for the connection between the Switch Interface Board (SIB) and the FPCs.

(PTX Series Packet Transport Routers and QFX Series switches) Display the input-output link topology.

Options

none

(TX Matrix routers only) Display the state of the switching fabric topology for the Switch Interface Board (SIB) connection between the TX Matrix router and the T640 routers.

(TX Matrix Plus routers only) Display the state of the switching fabric topology for the SIB connection between the TX Matrix Plus router and the connected routers.

(T320, T640, T1600, and T4000 routers only) Display the state of the switching fabric topology for the connection between the Switch Interface Board (SIB) and the FPCs.

For PTX10008 devices, fabric ASIC goes from 0-2 and FPC numbering goes from 0-7

For PTX10016 devices, fabric ASIC goes from 0-5 and FPC numbering goes from 0-15.

(QFX Series switches) Display the input-output link topology.

lcc number

(TX Matrix and TX Matrix Plus routers only) (Optional) On a TX Matrix router, display the fabric topology state for a specified T640 router (line-card chassis) that is connected to a TX Matrix router. On a TX Matrix Plus router, display the fabric topology state for a specified router (line-card chassis) that is connected to the TX Matrix Plus router.

Replace number with the following values depending on the LCC configuration:

  • 0 through 3, when T640 routers are connected to a TX Matrix router in a routing matrix.

  • 0 through 3, when T1600 routers are connected to a TX Matrix Plus router in a routing matrix.

  • 0 through 7, when T1600 routers are connected to a TX Matrix Plus router with 3D SIBs in a routing matrix.

  • 0, 2, 4, or 6, when T4000 routers are connected to a TX Matrix Plus router with 3D SIBs in a routing matrix.

scc

(TX Matrix routers only) (Optional) Display the fabric topology state for the TX Matrix router (or switch-card chassis).

sfc number

(TX Matrix Plus routers only) (Optional) Display the fabric topology for the switch-fabric chassis. Replace number with 0.

sib-slot

(Optional) Display the fabric topology state for a specified SIB slot. Replace sib-slot with a value from 0 through 4. On a TX Matrix Plus router, replace sib-slot with a value from 0 through 15.

Required Privilege Level

view

Output Fields

Table 1 lists the output fields for the show chassis fabric topology command. Output fields are listed in the approximate order in which they appear.

Table 1: show chassis fabric topology Output Fields

Field Name

Field Description

in-links

Fabric topology for receive side links.

out-links

Fabric topology for transmit side links.

state

State of the fabric link:

  • RESET—Link between the SIB and the FPC/DPC is powered down on purpose. This is done in all non-dual Packet Forwarding Engine–based boards.

  • UP—Link between the SIB and the FPC/DCP is up and running.

  • DOWN—Link between the SIB and the FPC/DCP is powered down.

  • FAULT—The SIB is in the alarmed state, in which the SIB’s plane is not operational for one or more of the following reasons:

    • On-board F-chip is not operational.

    • Fiber-optic connector faults.

    • FPC connector faults.

    • SIB midplane connector faults.

    Note:

    The following state descriptions are applicable only to PTX Series Packet Transport Routers.

  • OK—The link between the SIB and the FPC is operational.

  • Down—The link between the SIB and the FPC is powered down.

  • Error—The CCL link between the SIB and FPC is not operational for one or more of the following reasons:

    • FPC midplane connector failure.

    • SIB midplane connector failure.

    • CCL link CRC error.

Out-Links: and In-Links (TX Matrix Plus router only)

State of the links from the F13 SIB to the LCC or vice-versa. Out-Links indicate Tx links. In-Links indicate an Rx link. The following additional fields are displayed for each SIB:

  • VCSEL Status—Optical (VCSEL channel) link status for the corresponding electrical (HSL2) link. The states include:

    • OK—Optical signal power is good.

    • Error—Internal error.

    • LOS—Loss of Signal detected.

    • High Cur—The Tx Bias-current is higher than threshold on this channel. This is applicable only to Tx Channels.

    • Low Cur —The Tx Bias-current is lower than threshold on this channel. This is applicable only to Tx Channels.

  • HSL2 Channel—HSL2 is the electrical link used to connect ASICs to the in-link and out-link. The channel number corresponds to the link and varies based on the ASIC or configuration.

  • HSL2 Status —The status of the HSL2 Channel. Includes the following states:

  • Up—Channel is up.

  • Down—Channel is down.

  • Reset—Channel has been reset.

  • Fault—Channel has faults.

The following is a representation of display output for links originating from the SIBs (LCC or SFC)

SF_[1|3]_port#_FB_[A-D](VCSEL#, fiber)
  • SF_[1|3]—Name of the ASIC, with Fabric F1 or F3 mode.

  • port#—HSL2 port number on the SF ASIC in the LCC.

  • FB_[A-D]—via fiber bundle A, B, C or D.

  • VCSEL#—VCSEL module number on SIB.

  • fiber—Fiber channel number.

The following is a representation of display output for links originating from the SIBs (LCC or SFC)

SF_[1|3]_port#_FB_[A-D](VCSEL#, fiber)
  • SF_[1|3]—Name of the ASIC, with Fabric F1 or F3 mode.

  • port#—HSL2 port number on the SF ASIC in the LCC.

  • FB_[A-D]—via fiber bundle A, B, C or D.

  • VCSEL#—VCSEL module number on SIB.

  • fiber—Fiber channel number.

The following is a sample output with description of the fields displayed in the output for Out-Links:

Out-Links:
=========
SF_30_13_FB_A(21,09) -> FPC7_B_SG(3,3,6)_FB_A(18,09)      OK       203     Up 
  • SF_30_13—Name of the ASIC, with Fabric F1 or F3 mode. In this case, 3 is the F3 direction and is used in the Tx path and 0 identifies the serial link on the SF chip (in this case, link goes to sf-3 chip number 0). You can also have F1 mode and Rx path instead.

  • FB_A (21, 09)—Fiber bundle A, with VCSEL unit number 21 within the SIB, and channel number 9 within the unit number.

  • FPC7_B_SG(3,3,6—FPC 7.with bottom Packet Forwarding Engine (T for top PFE and B for bottom PFE), SG ASIC, with number 3 and port number 3, with HSL2 link number with the SIB as 6.

  • FB_A(18, 09)—Fiber Bundle, with VCSEL unit number 18 within the SIB, and VCSEL channel number 9 within the unit number.

The following is a representation of display output for links originating from the FPCs (In-Links)

FPC#_[T|B]_SG(ASIC#, port#, HSL2_bit)_FB_[A-D](VCSEL#, fiber)
  • FPC#—FPC number with PFE (0 or 1).

  • T—Top Packet Forwarding Engine.

  • B—Bottom Packet Forwarding Engine.

  • SG(ASIC#, port#, HSL2_bit)—SG ASIC information (ASIC 0-3, ASIC 0-5 (PTX10016),port 0-3, HSL2_bit 0-7).

  • FB_[A-D]—via fiber bundle A, B, C or D.

  • VCSEL#—VCSEL module number on SIB.

  • fiber—Fiber channel number.

The following is a representation of display output for links originating from the FPCs (In-Links)

FPC#_[T|B]_SG(ASIC#, port#, HSL2_bit)_FB_[A-D](VCSEL#, fiber)
  • FPC#—FPC number with PFE (0 or 1).

  • T—Top Packet Forwarding Engine.

  • B—Bottom Packet Forwarding Engine.

  • SG(ASIC#, port#, HSL2_bit)—SG ASIC information (ASIC 0-3, ASIC 0-5 (PTX10016) port 0-3, HSL2_bit 0-7).

  • FB_[A-D]—via fiber bundle A, B, C or D.

  • VCSEL#—VCSEL module number on SIB.

  • fiber—Fiber channel number.

The following is a sample output with description of the fields displayed in the output for In-Links:

In-Links :
========
FPC0_T_SG(0,0,0)_FB_D(04,11)  -> SF_10_00_FB_D(01,11)     OK       0       Up 
  • FPC0—FPC 0.

  • T—Top Packet Forwarding Engine.

  • SG (0, 0, 0)—SG ASIC with port number 0 and link 0.

  • FB_D (04,11)—Fiber Bundle D with VCSEL 4, channel 11.

  • SF_10—Indicates F1 mode chip number 0 and Rx path.

  • SF_10_00_FB_D(01,11) —Indicates F1 mode chip number 0 and Rx path with port 0, fiber bundle D, with VCSEL 1, channel 11.

Out-links and In-links (TX Matrix Plus router with 3D SIBs only)

State of the links from the F13 SIB to the SFC/LCC or vice-versa. Out-Links indicate Tx links. In-Links indicate an Rx link. The following additional fields are displayed for each SIB:

  • Description of the fields displayed in the output for In-links and Out-links for SFC:

    --------------------------------------------------------------------------
               In-links               State             Out-links              State
    --------------------------------------------------------------------------------
    CXP0_Evn->F13_SIB0_XF2,04_0      Up      F13_SIB0_XF2,04_0->CXP0_Evn      Up   
       
     
    • CXP0_Evn—CXP optics with type of port bits such as even or odd. In this case, it indicates CXP optics with even port bit number 0.

    • F13_SIB0—Name of the SFC data plane SIB with the SIB number. In this case, it indicates F13 SIB with number 0.

    • XF2,04_0—Name of the ASIC with port and subchannel number. In this case, it Indicates XF2 chip with port number 4 and subchannel number 0.

  • Description of the fields displayed in the output for In-links and Out-links for LCC:

    --------------------------------------------------------------------------
                In-links               State             Out-links              State
    --------------------------------------------------------------------------------
    CXP0_Evn->LCC_SIB0_XF3,10_0      Up      LCC_SIB0_XF3,10_0->CXP0_Evn      Up   
    
    
    • CXP0_Evn—CXP optics with the type of port bits such as even or odd. In this case, it indicates CXP optics with even port bit number 0.

    • LCC_SIB0—LCC SIB number. In this case, it indicates LCC SIB with number 0.

    • XF3,10_0—Name of the ASIC with port and subchannel number. In this case, it Indicates XF3 with port number 10 and subchannel number 0.

Sample Output

show chassis fabric topology scc (TX Matrix Router)

show chassis fabric topology lcc

show chassis fabric topology (TX Matrix Plus Router)

show chassis fabric topology sfc (TX Matrix Plus Router)

show chassis fabric topology lcc (TX Matrix Plus Router)

show chassis fabric topology (T4000 Core Router)

show chassis fabric topology lcc (TX Matrix Plus Router with 3D SIBs)

show chassis fabric topology (PTX5000 Router)

show chassis fabric topology (PTX10016 Router)

show chassis fabric topology (QFX10008 Switch)

Release Information

Command introduced before Junos OS Release 7.4.

sfc option introduced for the TX Matrix Plus router in Junos OS Release 9.6.