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Home Documentation Junos OS Chassis-Level User Guide Fabric Management

Chassis-Level User Guide

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Smooth Upgrade from SFB to SFB2

date_range 20-Dec-24
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Understanding the Smooth Upgrade Process

The MX2000 line of routers support Switch Fabric Board (SFB; model number: MX2000-SFB) and the enhanced Switch Fabric Board (SFB2; model number: MX2000-SFB-S). SFB2 is designed to support higher bandwidth than that provided by SFB on the MX2000 line of routers. For instance, the MX2000 line of routers with SFB support fabric bandwidth of 800 Gbps. However, the MX2000 line of routers with SFB2 can support fabric bandwidth of 1.92 Tbps. A smooth upgrade enables you to upgrade from SFB to SFB2 with minimal traffic impact on the MX2000 line of routers.

Note:

If you have installed the Junos Continuity software package, you cannot perform a smooth upgrade from Switch Fabric Board (SFB) to Enhanced Switch Fabric Board (SFB2) on MX2010 and MX2020 routers.

This topic explains the smooth upgrade process that takes place when you upgrade from Switch Fabric Board (SFB) to enhanced Switch Fabric Board (SFB2) on MX2000 line of routers.

Note:

The MX2000 line of routers support either SFB or SFB2 only. The MX2000 line of routers do not support SFB and SFB2 at the same time. However, during an upgrade from SFB to SFB2, the MX2000 line of routers support both SFB and SFB2 at the same time for the duration of the upgrade. But, you must upgrade all 8 SFBs to 8 SFB2s. You cannot replace 4 SFBs with 4SFB2s and retain the other SFBs.

The process of smooth upgrade from SFB and SFB2 includes the following steps:

  1. Initiating the smooth upgrade process. When you initiate smooth upgrade, the router can support both SFB and SFB2 at the same time.

  2. Performing the smooth upgrade. This step consists of replacing all SFBs with SFB2s.

  3. Terminating the smooth upgrade. When you terminate the smooth upgrade process, the router stops supporting SFB and SFB2 at the same time.

A smooth upgrade provides the following benefits:

  • The smooth upgrade eliminates network downtime during the smooth upgrade window because of 7+1 fabric redundancy. When one SFB is being upgraded to SFB2, the other seven SFBs are available to handle the traffic.

    Note:

    If multiple SFBs are upgraded at the same time, multiple fabric planes are down at any specified time and so traffic is impacted.

  • When multiple fabric boards and planes come online at the same time, you can batch them together and train. This reduces the booting up time and the time taken for the plane to come online.

  • On MX2000 line of routers with SFB, fabric grant bypass is enabled by default. Disabling fabric grant bypass helps control congestion and improves performance. On MX2000 line of routers with SFB, you can disable fabric grant bypass by By default, fabric grant bypass is disabled for all MPCs on MX2000 line of routers when they connect to SFB2. Fabric grant bypass is enabled by default on MPC1 (MX-MPC1-3D), MPC2 (MX-MPC2-3D), and the 16-port 10-Gigabit Ethernet MPC (MPC-3D-16xGE-SFPP). When fabric grant bypass is enabled by default, when those MPCs connect to SFB2, fabric grant bypass continues to be enabled and cannot be disabled.

To quickly access the information you need, click the links in Table 1.

Table 1: Locating the Information You Need to Work on Smooth Upgrade Process

Task You Need to Perform

Where The Information Is Located

Before You begin

Before you Begin the Smooth Upgrade Process

Perform a Smooth Upgrade

Performing a Smooth Upgrade to Enhanced Switch Fabric Board (SFB2) with Minimal Impact on Traffic

Before you Begin the Smooth Upgrade Process

Before you begin the smooth upgrade from Switch Fabric Board (SFB) to enhanced Switch Fabric Board (SFB2), complete the following tasks:

Note:

If you have installed the Junos Continuity software package, you cannot perform a smooth upgrade from Switch Fabric Board (SFB) to Enhanced Switch Fabric Board (SFB2) on MX2010 and MX2020 routers.

  • Prepare the router and install the version of Junos OS Release (16.1R1 or later) that supports the smooth upgrade process. For more information about how to install or upgrade the version of Junos OS Release, see Installing the Software Package on a Device with Redundant Routing Engines (Junos OS).

  • Verify that the Switch Fabric Boards and fabric planes are online and operational. At this time, the line cards are connected to SFB.

  1. To verify that all the switch fabric boards (SFBs) are online and operational, issue the following command:
    content_copy zoom_out_map
    user@host> show chassis hardware
Hardware inventory:
Item             Version  Part number  Serial number     Description
Chassis                                JN11E0A50AFJ      MX2020
Midplane         REV 01   711-032387   abcd1111          Lower Backplane
Midplane 1       REV 04   711-032386   ABAB9191          Upper Backplane
PMP 1            REV 05   711-032428   ACAJ1526          Upper Power Midplane
PMP 0            REV 04   711-032426   ACAJ1585          Lower Power Midplane
FPM Board        REV 06   760-040242   ABBT8836          Front Panel Display
PSM 0            REV 01   740-050037   1EDB32101E3       DC 52V Power Supply Module
PSM 1            REV 01   740-033727   1E012130107       DC 52V Power Supply Module
PSM 2            REV 01   740-050037   1EDB3210162       DC 52V Power Supply Module
PSM 3            REV 01   740-050037   1EDB32000R6       DC 52V Power Supply Module
PSM 4            REV 01   740-050037   1EDB313005M       DC 52V Power Supply Module
PSM 5            REV 01   740-050037   1EDB321016G       DC 52V Power Supply Module
PSM 6            REV 01   740-050037   1EDB313005F       DC 52V Power Supply Module
PSM 7            REV 01   740-050037   1EDB313009X       DC 52V Power Supply Module
PSM 8            REV 01   740-050037   1EDB3130082       DC 52V Power Supply Module
PSM 9            REV 01   740-050037   1EDB32101HH       DC 52V Power Supply Module
PSM 10           REV 01   740-050037   1EDB321015G       DC 52V Power Supply Module
PSM 11           REV 01   740-050037   1EDB32101JW       DC 52V Power Supply Module
PSM 12           REV 01   740-045050   1E02224000N       DC 52V Power Supply Module
PSM 13           REV 01   740-050037   1EDB321015C       DC 52V Power Supply Module
PSM 14           REV 01   740-050037   1EDB321015J       DC 52V Power Supply Module
PSM 15           REV 01   740-045050   1E022240015       DC 52V Power Supply Module
PSM 16           REV 01   740-045050   1E02224000L       DC 52V Power Supply Module
PSM 17           REV 01   740-050037   1EDB32101EP       DC 52V Power Supply Module
PDM 1            REV 03   740-045234   1EFA3230588       DC Power Dist Module
PDM 2            REV 03   740-045234   1EFA3230508       DC Power Dist Module
Routing Engine 0 REV 02   740-041821   9009115214        RE-S-1800x4
Routing Engine 1 REV 02   740-041821   9009099720        RE-S-1800x4
CB 0             REV 23   750-040257   CAAR5968          Control Board
CB 1             REV 12   750-040257   CAAD9498          Control Board
SPMB 0           REV 02   711-041855   ABCC1066          PMB Board
SPMB 1           REV      711-041855   ABBS1488          PMB Board
SFB 0            REV 06   711-044466   ABCD4944          Switch Fabric Board
SFB 1            REV 06   711-044466   ABCD4938          Switch Fabric Board
SFB 2            REV 06   711-044466   ABCD5175          Switch Fabric Board
SFB 3            REV 06   711-044466   ABCD5160          Switch Fabric Board
SFB 4            REV 06   711-044466   ABCD4997          Switch Fabric Board
SFB 5            REV 06   711-044466   ABCD5013          Switch Fabric Board
SFB 6            REV 06   711-044466   ABCD5267          Switch Fabric Board
SFB 7            REV 06   711-044466   ABCD4968          Switch Fabric Board
FPC 0            REV 23   750-054901   CAEH6678          MPC3E NG HQoS
  CPU            REV 11   711-045719   CAEA4592          RMPC PMB
  MIC 0          REV 26   750-028392   ZM0999            3D 20x 1GE(LAN) SFP
    PIC 0                 BUILTIN      BUILTIN           10x 1GE(LAN) SFP
      Xcvr 0     REV 01   740-031469   17T446600017      SFP-LX10
      Xcvr 1     REV 01   740-031469   17T446600120      SFP-LX10
      Xcvr 2     REV 01   740-031469   19T446600010      SFP-LX10
      Xcvr 3     REV 01   740-031469   0ZT446600018      SFP-LX10
      Xcvr 4     REV 01   740-031469   19T446600007      SFP-LX10
      Xcvr 5     REV 01   740-031469   18T446600081      SFP-LX10
      Xcvr 6     REV 01   740-031469   18T446600088      SFP-LX10
      Xcvr 7     REV 01   740-031469   18T446600049      SFP-LX10 Xcvr 8     REV 01   740-031469   18T446600002      SFP-LX10
      Xcvr 9     REV 01   740-031469   19T446600008      SFP-LX10
    PIC 1                 BUILTIN      BUILTIN           10x 1GE(LAN) SFP
      Xcvr 0     REV 01   740-031469   18T446600032      SFP-LX10
      Xcvr 1     REV 01   740-031469   09T446600025      SFP-LX10
      Xcvr 2     REV 01   740-031469   19T446600004      SFP-LX10
      Xcvr 3     REV 01   740-031469   18T446600084      SFP-LX10
      Xcvr 4     REV 01   740-031469   18T446600060      SFP-LX10
      Xcvr 5     REV 01   740-031469   17T446600085      SFP-LX10
      Xcvr 6     REV 01   740-031469   17T446600014      SFP-LX10
      Xcvr 7     REV 01   740-031469   17T446600315      SFP-LX10
      Xcvr 8     REV 01   740-031469   18T446600043      SFP-LX10
      Xcvr 9     REV 01   740-031469   0ZT446600017      SFP-LX10
  MIC 1          REV 19   750-033199   CAAJ1818          1X100GE CFP
    PIC 2                 BUILTIN      BUILTIN           1X100GE CFP
FPC 1            REV 32   750-028467   ZR1986            MPC 3D 16x 10GE
  CPU            REV 10   711-029089   ZT7025            AMPC PMB
  PIC 0                   BUILTIN      BUILTIN           4x 10GE(LAN) SFP+
    Xcvr 0       REV 01   740-021308   AMH0285           SFP+-10G-SR
  PIC 1                   BUILTIN      BUILTIN           4x 10GE(LAN) SFP+
    Xcvr 1       REV 01   740-031980   AHK011H           SFP+-10G-SR
  PIC 2                   BUILTIN      BUILTIN           4x 10GE(LAN) SFP+
    Xcvr 0       REV 01   740-021308   APK0569           SFP+-10G-SR
  PIC 3                   BUILTIN      BUILTIN           4x 10GE(LAN) SFP+
FPC 2            REV 04   750-044444   ZA7865            MPCE Type 2 3D P
  CPU            REV 02   711-038484   ZB2728            MPCE PMB 2G 
  MIC 0          REV 07   750-028390   XY2158            3D 40x 1GE(LAN) RJ45
    PIC 0                 BUILTIN      BUILTIN           10x 1GE(LAN) RJ45
    PIC 1                 BUILTIN      BUILTIN           10x 1GE(LAN) RJ45
    PIC 2                 BUILTIN      BUILTIN           10x 1GE(LAN) RJ45
    PIC 3                 BUILTIN      BUILTIN           10x 1GE(LAN) RJ45
  MIC 1                                 
  QXM 0          REV 05   711-028408   ZC3420            MPC QXM
  QXM 1          REV 05   711-028408   ZC3350            MPC QXM
FPC 3            REV 22   750-054564   CADG6972          MPC5E 3D 2CGE+4XGE
  CPU            REV 11   711-045719   CADC7599          RMPC PMB
  PIC 0                   BUILTIN      BUILTIN           2X10GE SFPP OTN
    Xcvr 0       REV 01   740-031980   193363A00483      SFP+-10G-SR
    Xcvr 1       REV 01   740-031980   1YT517101829      SFP+-10G-SR
  PIC 1                   BUILTIN      BUILTIN           1X100GE CFP2 OTN
    Xcvr 0       REV 01   740-052505   XUF0GPX           CFP2-100G-SR10
  PIC 2                   BUILTIN      BUILTIN           2X10GE SFPP OTN
  PIC 3                   BUILTIN      BUILTIN           1X100GE CFP2 OTN
FPC 6            REV 11   750-045372   CABT0840          MPCE Type 3 3D
  CPU            REV 08   711-035209   CABL0889          HMPC PMB 2G 
MIC 0          REV 27   750-028392   CABR4723          3D 20x 1GE(LAN) SFP
    PIC 0                 BUILTIN      BUILTIN           10x 1GE(LAN) SFP
      Xcvr 0     REV 01   740-011782   P9229UM           SFP-SX
      Xcvr 1     REV 01   740-011782   P9P0X6V           SFP-SX
      Xcvr 2     REV 01   740-011613   PCE01W5           SFP-SX
      Xcvr 4     REV 01   740-011613   PD63DEN           SFP-SX
      Xcvr 5     REV 02   740-011613   PG12FSF           SFP-SX
      Xcvr 7     REV 01   740-011782   PCL3UDY           SFP-SX
      Xcvr 8     REV 01   740-011613   PE713Z9           SFP-SX
      Xcvr 9     REV 01   740-011613   AM0846SAQA5       SFP-SX
    PIC 1                 BUILTIN      BUILTIN           10x 1GE(LAN) SFP
      Xcvr 0     REV 01   740-011613   P9F16KE           SFP-SX
      Xcvr 1     REV 01   740-031851   AM1045SU91U       SFP-SX
      Xcvr 4     REV 01   740-011613   PAJ4SY8           SFP-SX
      Xcvr 5     REV 01   740-011782   P9228K7           SFP-SX
  MIC 1          REV 27   750-028392   CABT5724          3D 20x 1GE(LAN) SFP
    PIC 2                 BUILTIN      BUILTIN           10x 1GE(LAN) SFP
      Xcvr 0     REV 02   740-011613   AM0925SBG5T       SFP-SX
      Xcvr 1              NON-JNPR     P7K1PUX           SFP-SX
      Xcvr 2     REV 01   740-011613   PFF2DHH           SFP-SX
      Xcvr 4     REV 01   740-011613   PD63DF2           SFP-SX
      Xcvr 5     REV 02   740-011613   AM1033SH3DH       SFP-SX
      Xcvr 6     REV 01   740-011613   PE70W8W           SFP-SX
      Xcvr 9     REV 01   740-011613   PD62W9W           SFP-SX
    PIC 3                 BUILTIN      BUILTIN           10x 1GE(LAN) SFP
      Xcvr 0     REV 02   740-013111   9154876           SFP-T
      Xcvr 2     REV 01   740-011613   AM0846SAQ9H       SFP-SX
      Xcvr 5     REV 01   740-011613   AM0820S9T2C       SFP-SX
      Xcvr 9     REV 01   740-011613   AM0805S8LGQ       SFP-SX
FPC 7            REV 27   750-033205   ZL6014            MPCE Type 3 3D
  CPU            REV 07   711-035209   ZK9068            HMPC PMB 2G 
  MIC 0          REV 04   750-028392   JR6231            3D 20x 1GE(LAN) SFP
    PIC 0                 BUILTIN      BUILTIN           10x 1GE(LAN) SFP
      Xcvr 0     REV 01   740-031851   AM1045SU93A       SFP-SX
    PIC 1                 BUILTIN      BUILTIN           10x 1GE(LAN) SFP
      Xcvr 4     REV 01   740-011782   P9P1050           SFP-SX
      Xcvr 9     REV 01   740-011613   PFF2K74           SFP-SX
  MIC 1          REV 19   750-033199   CAAF0016          1X100GE CFP
    PIC 2                 BUILTIN      BUILTIN           1X100GE CFP
FPC 11           REV 16   750-037358   CAAL1014          MPC4E 3D 32XGE
  CPU            REV 08   711-035209   CAAS2637          HMPC PMB 2G 
  PIC 0                                 
  PIC 1                                 
  PIC 2                                 
  PIC 3                                 FPC 12           REV 29   750-031090   ZA1887            MPC Type 2 3D EQ
  CPU            REV 06   711-030884   YR6876            MPC PMB 2G 
FPC 13           REV 36   750-056519   CAFW4205          MPC7E 3D MRATE-12xQSFPP-XGE-XLGE-CGE
  CPU            REV 16   750-057177   CAFY5688          SMPC PMB
  PIC 0                   BUILTIN      BUILTIN           MRATE-6xQSFPP-XGE-XLGE-CGE
    Xcvr 0       REV 01   740-054053   QF3208FT          QSFP+-4X10G-SR
    Xcvr 3       REV 01   740-032986   QB171000          QSFP+-40G-SR4
    Xcvr 5       REV 01   740-058732   1CJQA10700C       QSFP-100GBASE-LR4
  PIC 1                   BUILTIN      BUILTIN           MRATE-6xQSFPP-XGE-XLGE-CGE
    Xcvr 0       REV 01   740-054053   QF3208G2          QSFP+-4X10G-SR
    Xcvr 1       REV 01   740-054053   QF3208G3          QSFP+-4X10G-SR
    Xcvr 2                NON-JNPR     F2M2010439        QSFP-100GBASE-LR4
    Xcvr 3       REV 01   740-046565   QF3300ZQ          QSFP+-40G-SR4
    Xcvr 5       REV 01   740-058734   1ACQ104202U       QSFP-100GBASE-SR4
FPC 14           REV 68   750-044130   ABDC2916          MPC6E 3D
  CPU            REV 12   711-045719   ABDC2710          RMPC PMB
FPC 16           REV 22   750-037355   CABW1289          MPC4E 3D 2CGE+8XGE
  CPU            REV 08   711-035209   CABR9796          HMPC PMB 2G 
  PIC 0                   BUILTIN      BUILTIN           4x10GE SFPP
  PIC 1                   BUILTIN      BUILTIN           1X100GE CFP
  PIC 2                   BUILTIN      BUILTIN           4x10GE SFPP
  PIC 3                   BUILTIN      BUILTIN           1X100GE CFP
FPC 17           REV 23   750-037355   CACL2280          MPC4E 3D 2CGE+8XGE
  CPU            REV 10   711-035209   CACK9073          HMPC PMB 2G 
  PIC 0                   BUILTIN      BUILTIN           4x10GE SFPP
  PIC 1                   BUILTIN      BUILTIN           1X100GE CFP
  PIC 2                   BUILTIN      BUILTIN           4x10GE SFPP
  PIC 3                   BUILTIN      BUILTIN           1X100GE CFP
FPC 18           REV 23   750-054901   CAEV3700          MPC3E NG HQoS
  CPU            REV 12   711-045719   CAFK4017          RMPC PMB
  MIC 0          REV 19   750-033199   CAAJ9717          1X100GE CFP
    PIC 0                 BUILTIN      BUILTIN           1X100GE CFP
  MIC 1          REV 15   750-033199   ZP6432            1X100GE CFP
    PIC 2                 BUILTIN      BUILTIN           1X100GE CFP
FPC 19           REV 29   750-063414   CAEJ2194          MPC9E 3D
  CPU            REV 02   750-057177   CACN2561          SMPC PMB
  MIC 0          REV 01   750-055992   CADV4595          MRATE-12xQSFPP-XGE-XLGE-CGE
    PIC 0                 BUILTIN      BUILTIN           MRATE-12xQSFPP-XGE-XLGE-CGE
      Xcvr 0     REV 01   740-046565   QF3300ZG          QSFP+-40G-SR4
      Xcvr 1     REV 01   740-046565   QF330122          QSFP+-40G-SR4
      Xcvr 2     REV 01   740-046565   QF33011P          QSFP+-40G-SR4
      Xcvr 3     REV 01   740-046565   QF3300ZU          QSFP+-40G-SR4
      Xcvr 4     REV 01   740-046565   QF3300ZS          QSFP+-40G-SR4
      Xcvr 5     REV 01   740-046565   QF3300ZN          QSFP+-40G-SR4
      Xcvr 6     REV 01   740-046565   QF3300ZP          QSFP+-40G-SR4 
			Xcvr 7     REV 01   740-046565   QF3300ZT          QSFP+-40G-SR4
      Xcvr 8     REV 01   740-046565   QF3300ZM          QSFP+-40G-SR4
      Xcvr 9     REV 01   740-046565   QF3300ZR          QSFP+-40G-SR4
      Xcvr 10    REV 01   740-046565   QF330105          QSFP+-40G-SR4
      Xcvr 11    REV 01   740-046565   QF3300ZK          QSFP+-40G-SR4
  MIC 1          REV 08   750-055992   CAEX1421          MRATE-12xQSFPP-XGE-XLGE-CGE
    PIC 1                 BUILTIN      BUILTIN           MRATE-12xQSFPP-XGE-XLGE-CGE
      Xcvr 6     REV 01   740-046565   QF330100          QSFP+-40G-SR4
ADC 0            REV 19   750-043596   ABCK6658          Adapter Card
ADC 1            REV 17   750-043596   ABCB7201          Adapter Card
ADC 2            REV 05   750-043596   CAAC2076          Adapter Card
ADC 3            REV 13   750-043596   ABBX5549          Adapter Card
ADC 6            REV 17   750-043596   ABCB7226          Adapter Card
ADC 7            REV 01   750-043596   ZV4079            Adapter Card
ADC 11           REV 17   750-043596   ABCD5472          Adapter Card
ADC 12           REV 17   750-043596   ABCB7147          Adapter Card
ADC 13           REV 17   750-043596   ABCD5410          Adapter Card
ADC 16           REV 17   750-043596   ABCB7047          Adapter Card
ADC 17           REV 17   750-043596   ABCD5525          Adapter Card
ADC 18           REV 17   750-043596   ABCD5391          Adapter Card
Fan Tray 0       REV 01   760-042349   ACAY4801          FanTray v2
Fan Tray 1       REV 01   760-042349   ACAY4802          FanTray v2
Fan Tray 2       REV 01   760-042349   ACAY4803          FanTray v2
Fan Tray 3       REV 01   760-042349   ACAY4800          FanTray v2
  2. To verify that all the fabric planes are available and operational, issue the following command:
    content_copy zoom_out_map
    user@host> show chassis fabric plane
Fabric management PLANE state
Plane 0
  Plane state: ACTIVE
      FPC 0
          PFE 0 :Links ok
      FPC 1
          PFE 0 :Links ok
          PFE 1 :Links ok
          PFE 2 :Links ok
          PFE 3 :Links ok
      FPC 2
          PFE 0 :Links ok
          PFE 1 :Links ok
      FPC 3
          PFE 0 :Links ok
          PFE 1 :Links ok
      FPC 6
          PFE 0 :Links ok
      FPC 7
          PFE 0 :Links ok
      FPC 11
          PFE 0 :Links ok
          PFE 1 :Links ok
      FPC 12
          PFE 0 :Links ok
          PFE 1 :Links ok
      FPC 13
          PFE 0 :Links ok
          PFE 1 :Links ok
      FPC 14
          PFE 0 :Links ok
          PFE 1 :Links ok
          PFE 2 :Links ok
          PFE 3 :Links ok
      FPC 16
          PFE 0 :Links ok
          PFE 1 :Links ok
      FPC 17
          PFE 0 :Links ok
          PFE 1 :Links ok
      FPC 18
          PFE 0 :Links ok
      FPC 19
          PFE 0 :Links ok
          PFE 1 :Links ok
   PFE 2 :Links ok               
          PFE 3 :Links ok               
Plane 1                                 
  Plane state: ACTIVE                   
      FPC 0                             
          PFE 0 :Links ok               
      FPC 1                             
          PFE 0 :Links ok               
          PFE 1 :Links ok               
          PFE 2 :Links ok               
          PFE 3 :Links ok               
      FPC 2                             
          PFE 0 :Links ok               
          PFE 1 :Links ok               
      FPC 3                             
          PFE 0 :Links ok               
          PFE 1 :Links ok               
      FPC 6                             
          PFE 0 :Links ok               
      FPC 7                             
          PFE 0 :Links ok               
      FPC 11                            
          PFE 0 :Links ok               
          PFE 1 :Links ok               
      FPC 12                            
          PFE 0 :Links ok               
          PFE 1 :Links ok               
      FPC 13                            
          PFE 0 :Links ok               
          PFE 1 :Links ok               
      FPC 14                            
          PFE 0 :Links ok               
          PFE 1 :Links ok               
          PFE 2 :Links ok               
          PFE 3 :Links ok               
      FPC 16                            
          PFE 0 :Links ok               
          PFE 1 :Links ok               
      FPC 17                            
          PFE 0 :Links ok               
          PFE 1 :Links ok               
      FPC 18                            
          PFE 0 :Links ok               
      FPC 19                            
          PFE 0 :Links ok               
	  PFE 1 :Links ok               
          PFE 2 :Links ok               
          PFE 3 :Links ok
...

Plane 7                                 
  Plane state: ACTIVE                   
      FPC 0                             
          PFE 0 :Links ok               
      FPC 1                             
          PFE 0 :Links ok               
          PFE 1 :Links ok               
          PFE 2 :Links ok               
          PFE 3 :Links ok               
      FPC 2                             
          PFE 0 :Links ok               
          PFE 1 :Links ok               
      FPC 3                             
          PFE 0 :Links ok               
          PFE 1 :Links ok               
      FPC 6                             
          PFE 0 :Links ok               
      FPC 7                             
          PFE 0 :Links ok               
      FPC 11                            
          PFE 0 :Links ok               
          PFE 1 :Links ok               
      FPC 12                            
          PFE 0 :Links ok               
          PFE 1 :Links ok               
      FPC 13                            
          PFE 0 :Links ok               
          PFE 1 :Links ok               
      FPC 14                            
          PFE 0 :Links ok               
          PFE 1 :Links ok               
          PFE 2 :Links ok               
          PFE 3 :Links ok               
      FPC 16                            
          PFE 0 :Links ok               
          PFE 1 :Links ok               
      FPC 17                            
          PFE 0 :Links ok               
          PFE 1 :Links ok               
      FPC 18                            
          PFE 0 :Links ok               
      FPC 19                            
          PFE 0 :Links ok               
          PFE 1 :Links ok               
          PFE 2 :Links ok               
          PFE 3 :Links ok
  3. To verify that the state of the electrical switch fabric links between the Flexible PIC Concentrators (FPCs) and the Switch Fabric Boards (SFBs) are eligible for carrying traffic, issue the following command:
    content_copy zoom_out_map
    user@host>show chassis fabric fpcs
Fabric management FPC state:
FPC 0
  PFE #0
      Plane 0: Plane enabled
      Plane 1: Plane enabled
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
FPC 1
  PFE #0
      Plane 0: Plane enabled
      Plane 1: Plane enabled
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
  PFE #1
      Plane 0: Plane enabled
      Plane 1: Plane enabled
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
  PFE #2
      Plane 0: Plane enabled
      Plane 1: Plane enabled
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
  PFE #3
      Plane 0: Plane enabled
      Plane 1: Plane enabled
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled 
		  Plane 5: Plane enabled            
      Plane 6: Plane enabled            
      Plane 7: Plane enabled            
FPC 2                                   
  PFE #0                                
      Plane 0: Plane enabled            
      Plane 1: Plane enabled            
      Plane 2: Plane enabled            
      Plane 3: Plane enabled            
      Plane 4: Plane enabled            
      Plane 5: Plane enabled            
      Plane 6: Plane enabled            
      Plane 7: Plane enabled            
  PFE #1                                
      Plane 0: Plane enabled            
      Plane 1: Plane enabled            
      Plane 2: Plane enabled            
      Plane 3: Plane enabled            
      Plane 4: Plane enabled            
      Plane 5: Plane enabled            
      Plane 6: Plane enabled            
      Plane 7: Plane enabled            
...
FPC 19                                  
  PFE #0                                
      Plane 0: Plane enabled            
      Plane 1: Plane enabled            
      Plane 2: Plane enabled            
      Plane 3: Plane enabled            
      Plane 4: Plane enabled            
      Plane 5: Plane enabled            
      Plane 6: Plane enabled            
      Plane 7: Plane enabled            
  PFE #1                                
      Plane 0: Plane enabled            
      Plane 1: Plane enabled            
      Plane 2: Plane enabled            
      Plane 3: Plane enabled            
      Plane 4: Plane enabled            
      Plane 5: Plane enabled            
      Plane 6: Plane enabled            
      Plane 7: Plane enabled            
  PFE #2                                
      Plane 0: Plane enabled            
      Plane 1: Plane enabled            
      Plane 2: Plane enabled            
      Plane 3: Plane enabled            
      Plane 4: Plane enabled            
      Plane 5: Plane enabled            
      Plane 6: Plane enabled            
      Plane 7: Plane enabled            
  PFE #3                                
      Plane 0: Plane enabled            
      Plane 1: Plane enabled            
      Plane 2: Plane enabled            
      Plane 3: Plane enabled            
      Plane 4: Plane enabled            
      Plane 5: Plane enabled            
      Plane 6: Plane enabled            
      Plane 7: Plane enabled
  4. To verify the state of all fabric planes and the elapsed time, issue the following command:
    content_copy zoom_out_map
    user@host> show chassis fabric summary
Plane   State    Uptime
 0      Online   11 hours, 13 minutes, 27 seconds
 1      Online   11 hours, 13 minutes, 6 seconds
 2      Online   11 hours, 12 minutes, 45 seconds
 3      Online   11 hours, 12 minutes, 24 seconds
 4      Online   11 hours, 12 minutes, 2 seconds
 5      Online   11 hours, 11 minutes, 41 seconds
 6      Online   11 hours, 11 minutes, 20 seconds
 7      Online   11 hours, 10 minutes, 59 seconds
  
 Note: For extended summary, use
       show chassis fabric summary extended

Performing a Smooth Upgrade to Enhanced Switch Fabric Board (SFB2) with Minimal Impact on Traffic

This example shows how to perform a smooth upgrade from the Switch Fabric Board (SFB) to the enhanced Switch Fabric Board (SFB2) on the MX2000 line of routers. A smooth upgrade helps reduce network downtime because of 7+1 fabric redundancy. When one SFB is being upgraded to SFB2, the other 7 SFBs are available to handle the traffic.

Note:

On MX2010 and MX2020 routers, if you have installed the Junos Continuity software package or if the router is not configured to allow multiple versions of the SFBs to coexist, you cannot perform a smooth upgrade from SFB to SFB2.

When not using a smooth upgrade, use one of the following methods to upgrade to SFB2:

  • Power off the router, replace the SFB with SFB2, and then power on the router.

  • Take both the Routing Engines offline, replace the SFB with SFB2, and then bring both the Routing Engines online.

Requirements

This example uses the following hardware and software components:

  • MX2020 router with dual Routing Engines

  • 8 Switch Fabric Boards (SFBs)

  • 8 enhanced Switch Fabric Boards (SFB2s)

  • Junos OS Release 16.1R1 or later release

Before you begin the smooth upgrade, ensure that you:

  • Prepare the router and install the version of Junos OS Release that supports the enhanced Switch Fabric Board (SFB2).

  • Verify that the existing SFBs are online and operational and also check the status of the fabric planes.

For more information about what you must do before you commence smooth upgrade, see Before you Begin the Smooth Upgrade Process.

Overview

The smooth upgrade process is used to upgrade from Switch Fabric Board (SFB) to enhanced Switch Fabric Board (SFB2) with minimal traffic impact. The existing SFBs are replaced one by one, in any order, by the new SFB2s. Because you are replacing a single SFB at a time, the remaining SFBs handle the traffic and so there is minimal impact to traffic. SFB2 is supported only on MX2020 and MX2010 routers.

Topology

This example shows how to perform a smooth upgrade on an MX2020 router that has eight SFBs. The 8 SFBs are replaced with 8 enhanced switch fabric boards (SFB2). First, initiate the smooth upgrade process and then take a single SFB offline. Replace the SFB with an SFB2, and then bring the SFB2 online. You can then repeat the steps for the other seven SFBs.

After you upgrade all the SFBs to SFB2s, the fabric bandwidth per slot of MPC8E and MPC9E on the MX2020 router is increased from 11 Gbps to 25 Gbps. However, the upgrade does not impact the fabric bandwidth per slot of MPC7.

Configuration

To upgrade from SFB to SFB2, perform the following tasks:

Initiating the Smooth Upgrade Process

Step-by-Step Procedure

By default, the MX2000 line of routers do not support both SFB and SFB2 at the same time. However, when you initiate the smooth upgrade process, the router can support both SFB and SFB2 at the same time. So, before you replace an SFB with an SFB2, you must initiate the smooth upgrade process.

  1. In configuration mode, at the [edit] hierarchy level, Initiate the smooth upgrade process for the SFBs.

    content_copy zoom_out_map
    [edit]
user@host# set chassis state sfb-upgrade on

  2. Commit the changes by using the commit statement and exit the configuration mode.

    content_copy zoom_out_map
    [edit]
user@host# commit

  3. In operational mode, verify that you have initiated the smooth upgrade process.

    content_copy zoom_out_map
    user@host> show configuration chassis
state {
sfb-upgrade on;
}

Performing the Smooth Upgrade

Step-by-Step Procedure

  1. In operational mode, take the SFBs offline. There is no specific order that needs to be maintained. In this example, you start with the SFB in slot 7 first.

    content_copy zoom_out_map
    user@host> request chassis sfb slot 7 offline

  2. Verify that the SFB is offline.

    content_copy zoom_out_map
    user@host> show chassis sfb
    content_copy zoom_out_map
    Slot  State              Uptime
 0    Online              1 day, 12 hours, 6 minutes, 59 seconds
 1    Online              1 day, 12 hours, 6 minutes, 37 seconds
 2    Online              1 day, 12 hours, 6 minutes, 16 seconds
 3    Online              1 day, 12 hours, 5 minutes, 55 seconds
 4    Online              1 day, 12 hours, 5 minutes, 33 seconds
 5    Online              1 day, 12 hours, 5 minutes, 12 seconds
 6    Online              1 day, 12 hours, 4 minutes, 51 seconds
 7    Offline              --- Offlined by cli command ---

  3. Replace the SFB that is offline with the enhanced SFB (SFB2). Minimal traffic loss is expected as only a single SFB is replaced and other seven SFBs are operational and handle the traffic.

  4. In operational mode, bring the SFB2 online.

    content_copy zoom_out_map
    user@host> request chassis sfb slot 7 online

  5. Verify that the SFB2 is online.

    content_copy zoom_out_map
    user@host> show chassis sfb
    content_copy zoom_out_map
    Slot  State              Uptime
 0    Online              1 day, 12 hours, 16 minutes, 38 seconds
 1    Online              1 day, 12 hours, 16 minutes, 16 seconds
 2    Online              1 day, 12 hours, 15 minutes, 55 seconds
 3    Online              1 day, 12 hours, 15 minutes, 34 seconds
 4    Online              1 day, 12 hours, 15 minutes, 12 seconds
 5    Online              1 day, 12 hours, 14 minutes, 51 seconds
 6    Online              1 day, 12 hours, 14 minutes, 30 seconds
 7    Online              38 seconds

  6. Repeat Step 3 through Step 5 for upgrading the other SFBs. We recommend that you upgrade fabric boards one at a time for minimal traffic impact.

Terminating the Smooth Upgrade Process

Step-by-Step Procedure

After all the SFBs are upgraded to the enhanced SFB (SFB2), you can terminate the smooth upgrade process. When the smooth upgrade process is initiated, SFB and SFB2 can coexist on the same router. When you terminate the smooth upgrade process, the router can have only SFB or SFB2 and not both at the same time.

  1. In configuration mode, at the [edit] hierarchy level, terminate the smooth upgrade process.

    Note:

    You can also use the delete chassis state sfb-upgrade command to terminate the smooth upgrade process.

    content_copy zoom_out_map
    [edit]
user@host# set chassis state sfb-upgrade off

  2. Commit the changes by using the commit statement and exit configuration mode.

    content_copy zoom_out_map
    [edit]
user@host# commit

  3. In operational mode, verify that you have initiated the smooth upgrade process.

    content_copy zoom_out_map
    user@host> show configuration chassis
state {
sfb-upgrade off;
}

Verification

To confirm that you have upgraded SFB to SFB2 on the MX2020 router, perform these tasks:

Verifying That the Switch Fabric Board (SFB) is Offline

Purpose

To verify that the SFB on a particular slot, for instance slot 1, is offline.

Action

From operational mode, enter the show chassis fabric fpcs command.

content_copy zoom_out_map
user@host> show chassis fabric fpcs
Fabric management FPC state:
FPC 2
  PFE #0
      Plane 0: Plane enabled
      Plane 1: Plane disabled >>>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
FPC 4
  PFE #0
		  Plane 0: Plane enabled
      Plane 1: Plane disabled >>>>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
  PFE #1
      Plane 0: Plane enabled
      Plane 1: Plane disabled  >>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
  PFE #2
      Plane 0: Plane enabled
      Plane 1: Plane disabled  >>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
  PFE #3
      Plane 0: Plane enabled
      Plane 1: Plane disabled  >>>>>
      Plane 2: Plane enabled
		  Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
FPC 6
  PFE #0
      Plane 0: Plane enabled
      Plane 1: Plane disabled   >>>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
  PFE #1
      Plane 0: Plane enabled
      Plane 1: Plane disabled   >>>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
FPC 7
  PFE #0
      Plane 0: Plane enabled
      Plane 1: Plane disabled  >>>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
  PFE #1
      Plane 0: Plane enabled
      Plane 1: Plane disabled  >>>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
  PFE #2
      Plane 0: Plane enabled
      Plane 1: Plane disabled  >>>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
  PFE #3
      Plane 0: Plane enabled
      Plane 1: Plane disabled >>>>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled

From operational mode, enter the show chassis fabric summary command.

content_copy zoom_out_map
user@host> show chassis fabric summary
Plane   State    Uptime
 0      Online   3 minutes, 14 seconds
 1      Offline
 2      Online   1 hour, 56 minutes, 53 seconds
 3      Online   1 hour, 56 minutes, 39 seconds
 4      Online   1 hour, 56 minutes, 25 seconds
 5      Online   1 hour, 56 minutes, 11 seconds
 6      Online   1 hour, 55 minutes, 56 seconds
 7      Online   1 hour, 42 minutes, 28 seconds

 Note: For extended summary, use
       show chassis fabric summary extended
Meaning

The SFB in Slot 1 has been taken offline.

Verifying That the Enhanced Switch Fabric Board (SFB2) is Online

Purpose

To verify that the enhanced switch fabric board (SFB2) inserted in the same slot (slot 1) is online.

Action

From operational mode, enter the show chassis fabric fpcs command.

content_copy zoom_out_map
user@host> show chassis fabric fpcs
Fabric management FPC state:
FPC 2
  PFE #0
      Plane 0: Plane enabled
      Plane 1: Plane enabled >>>>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
FPC 4
  PFE #0
		  Plane 0: Plane enabled
      Plane 1: Plane enabled >>>>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
  PFE #1
      Plane 0: Plane enabled
      Plane 1: Plane enabled  >>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
  PFE #2
      Plane 0: Plane enabled
      Plane 1: Plane enabled  >>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
  PFE #3
      Plane 0: Plane enabled
      Plane 1: Plane enabled  >>>>>
      Plane 2: Plane enabled
		  Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
FPC 6
  PFE #0
      Plane 0: Plane enabled
      Plane 1: Plane enabled   >>>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
  PFE #1
      Plane 0: Plane enabled
      Plane 1: Plane enabled   >>>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
FPC 7
  PFE #0
      Plane 0: Plane enabled
      Plane 1: Plane enabled  >>>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
  PFE #1
      Plane 0: Plane enabled
      Plane 1: Plane enabled  >>>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
  PFE #2
      Plane 0: Plane enabled
      Plane 1: Plane enabled  >>>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled
  PFE #3
      Plane 0: Plane enabled
      Plane 1: Plane enabled >>>>>>
      Plane 2: Plane enabled
      Plane 3: Plane enabled
      Plane 4: Plane enabled
      Plane 5: Plane enabled
      Plane 6: Plane enabled
      Plane 7: Plane enabled

From operational mode, enter the show chassis fabric summary command.

content_copy zoom_out_map
user@host> show chassis fabric summary
Plane   State    Uptime
 0      Online   6 minutes, 38 seconds
 1      Online   2 minutes, 12 seconds >>>>
 2      Online   2 hours, 17 seconds
 3      Online   2 hours, 3 seconds
 4      Online   1 hour, 59 minutes, 49 seconds
 5      Online   1 hour, 59 minutes, 35 seconds
 6      Online   1 hour, 59 minutes, 20 seconds
 7      Online   1 hour, 45 minutes, 52 seconds
Meaning

The SFB2 that replaced the SFB on slot 1 is online and operational.

Related Documentation

arrow_backward PREVIOUS Fabric Grant Bypass
NEXT arrow_forward Fabric Management on PTX10K devices
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