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  • 1.  EX2200 cannot boot junos, cannot go to loader

    Posted 02-25-2015 19:37



    I have strange problem with Juniper EX2200 series.

    Cannot boot to junos, so i try to reinstall junos but I can't even enter loader mode when I've hit space bar is not work.

    The following is output of boot :



    U-Boot 1.1.6 (Nov 22 2009 - 07:01:21)

    Board: EX2200-24T-4G 4.11
    EPLD: Version 04.091222 (0x10)
    DRAM: Initializing (512MB)
    Flash: 8 MB
    USB: scanning bus for devices... 3 USB Device(s) found
    scanning bus for storage devices... 1 Storage Device(s) found

    ELF file is 32 bit
    Consoles: U-Boot console

    FreeBSD/arm U-Boot loader, Revision 1.0
    (marcelm@svl-junos-pool57.juniper.net, Wed Nov 18 14:02:39 PST 2009)
    Memory: 512MB
    Loading /boot/defaults/loader.conf
    /kernel data=0x6d1704+0x7f924 syms=[0x4+0xc1ea0+0x4+0x99da5]

    Hit [Enter] to boot immediately, or space bar for command prompt.
    Booting [/kernel]...
    Kernel entry at 0x1400100 ...
    GDB: debug ports: uart
    GDB: current port: uart
    KDB: debugger backends: ddb gdb
    KDB: current backend: ddb
    Copyright (c) 1996-2010, Juniper Networks, Inc.
    All rights reserved.
    Copyright (c) 1992-2006 The FreeBSD Project.
    Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994
    The Regents of the University of California. All rights reserved.
    JUNOS 10.1R1.8 #0: 2010-02-12 16:37:10 UTC

    CPU: Feroceon 88FR131 rev 1 (Marvell core)
    WB enabled EABT branch prediction enabled
    16KB/32B 4-way Instruction cache
    16KB/32B 4-way write-back-locking-C Data cache
    real memory = 536870912 (512 MB)
    avail memory = 510271488 (486 MB)
    SOC: Marvell 88F6281 rev A0, TClock 200MHz
    Initializing EXSERIES platform properties ...
    mbus0: <Marvell Internal Bus (Mbus)> on motherboard
    ic0: <Marvell Integrated Interrupt Controller> at mem 0xf1020200-0xf102023b on mbus0
    timer0: <Marvell CPU Timer> at mem 0xf1020300-0xf102032f irq 1 on mbus0
    gpio0: <Marvell Integrated GPIO Controller> at mem 0xf1010100-0xf101011f irq 35,36,37,38,39,40,41 on

    uart0: <16550 or compatible> at mem 0xf1012000-0xf101201f irq 33 on mbus0
    uart0: console (9600,n,8,1)
    ehci0: <88F5XXX Integrated USB 2.0 controller> at mem 0xf1050000-0xf1050fff irq 48,19 on mbus0
    usb0: EHCI version 1.0
    usb0 on ehci0
    usb0: USB revision 2.0
    uhub0: Marvell EHCI root hub, class 9/0, rev 2.00/1.00, addr 1
    uhub0: 1 port with 1 removable, self powered
    uhub1: vendor 0x04cc product 0x1520, class 9/0, rev 2.00/2.00, addr 2
    uhub1: single transaction translator
    uhub1: 2 ports with 2 removable, self powered
    umass0: STMicroelectronics ST72682 High Speed Mode, rev 2.00/2.10, addr 3
    mge0: <Marvell Gigabit Ethernet controller> at mem 0xf1072000-0xf1073fff irq 12,13,14,11,46 on mbus0
    mge0: hardware MAC address 2c:6b:f5:91:0b:3f
    miibus0: <MII bus> on mge0
    e1000phy0: <Marvell 88E1118 Gigabit PHY> on miibus0
    e1000phy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX-FDX, auto
    i2c0: <I2C ARM 6281 OnChip i2c Controller> at mem 0xf1011000-0xf101101f irq 29 on mbus0
    cfi0: <SPI flash - 8MB> at mem 0xf1010600-0xf101062f,0xf8000000-0xf87fffff irq 23 on mbus0
    mpfe0: <Juniper EX-series Packet Forwarding Engine> at mem 0xf4000000-0xf7ffffff irq 113 on mbus0
    pcib0: <Marvell 88F6281 PCI-Express host controller> at mem 0xf1040000-0xf1041fff,0xe8000000-0xefffffff

    irq 9 on mbus0
    pci0: <PCI bus> on pcib0
    Initializing product: 75 ..
    bme0:Virtual BME driver initializing
    Timecounter "CPU Timer" frequency 200000000 Hz quality 1000
    Timecounters tick every 1.000 msec
    Loading the NETPFE picpeer module
    IPsec: Initialized Security Association Processing.
    da0 at umass-sim0 bus 0 target 0 lun 0
    da0: <ST ST72682 2.10> Removable Direct Access SCSI-2 device
    da0: 40.000MB/s transfers
    da0: 1000MB (2048000 512 byte sectors: 64H 32S/T 1000C)
    if_pfe_open: listener socket opened, listening on ...
    Trying to mount root from ufs:/dev/da0s1a
    WARNING: / was not properly dismounted
    Attaching /packages/jbase via /dev/mdctl...
    Mounted jbase package on /dev/md0...
    Dec 8 01:47:58 init: login_getclass: unknown class 'daemon'
    cd: can't cd to /etc/db/pkg
    Automatic reboot in progress...
    fstab: /etc/fstab:0: No such file or DWARNING: system watchdog timer still running,
    use '/sbin/watchdog -off' to disable
    Enter full pathname of shell or 'recovery' for root password recovery or RETURN for /bin/sh:
    NOTE: to go to multi-user operation, exit the single-user shell (with ^D)

    By the way I cannot open this case to JTAC because support of this box is over

    Any idea please?


    Thank you before,




  • 2.  RE: EX2200 cannot boot junos, cannot go to loader

    Posted 02-27-2015 07:19
    Try connect to console again by using putty app. Don't use SecureCRT. Good luck! 🙂

  • 3.  RE: EX2200 cannot boot junos, cannot go to loader

    Posted 03-17-2015 07:28

    Check this KB:




    If this worked for you please flag my post as an "Accepted Solution" so others can benefit. A kudo would be cool if you think I earned it.

  • 4.  RE: EX2200 cannot boot junos, cannot go to loader

    Posted 01-03-2018 03:21

    when i press CTRL+C it doesn't respond and complete restarting and when it finish till login: , it doesn't respond the root and doesn't respond any thing

  • 5.  RE: EX2200 cannot boot junos, cannot go to loader

    Posted 01-03-2018 05:32

    Try using spacebar, not Control-C.

  • 6.  RE: EX2200 cannot boot junos, cannot go to loader

    Posted 03-17-2015 14:32

    If the instructions in kb27255 don't work, do contact Juniper support.  Most of the EX line has a limited lifetime hardware warranty.  Juniper is standing behind these products in many of these types of cases.