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toh:mikrotik:mikrotik_rb921

MikroTik RB921 Series

Under Construction!
This page is currently under construction. You can edit the article to help completing it.

This page covers the MikroTik RouterBoard921-series, which is a stripped down version of the RouterBoard 922. MikroTik uses this board as base for some other products, like

The board has QCA9557 @ 720MHz; 128MB RAM; 128MB NAND, 64kB config-NOR; 1G Lan-port; QCA9892 5GHz a/n/ac. The concrete antenna differs on the final model.

PCB of a RB921GS-5HPacD-15S

On the right-side of the pcb is still the printing “RB922GS 5HPac”, which shows the origin of the design. A bit above is the not populated MiniPCI-e socket, on the lower right end is the unpopulated USB-connector.

FIXME

Getting started with a new Device Page

  1. This is an empty template that suggests the information that should be present on a well-constructed Device Page. This means, that you have to fill it with life and information.
  2. There are several “fixme” tags with text on a light background (like this text) throughout this template. As you fill in the page, remove those tags so that people can judge its completeness.
  3. When there are no more “fixme” tags left, delete this one too, along with the <WRAP> that encloses it.

Keep the articles modular

  • Please include only model specific information, omit bla,bla and put everything generic into separate articles
  • If you have no time to write certain stuff, link to docs
  • base-system should lead the way, do not explain this again
  • DO NOT provide a complete howto here! Instead groom the general documentation.

Supported Versions

Hardware Highlights

ModelVersionSoCCPU MHzFlash MBRAM MBWLAN HardwareWLAN2.4WLAN5.0100M portsGbit portsModemUSB
RB921GS-5HPacD-15SQualcomm Atheros QCA9558720128NAND128Qualcomm Atheros QCA9882-a/n/ac-1--

Installation

Flash Layout

FIXME Find out flash layout, then add the flash layout table here (copy, paste, modify the example).

Please check out the article Flash layout. It contains examples and explanations that describe how to document the flash layout.

OEM easy installation

FIXME The instructions below are for Broadcom devices and only serve as an example.
Remove / modify them if they do not apply to this particular device!

This section deals with

  • How you install OpenWrt from a device freshly opened
  • The steps required such as reset to factory defaults if the device has already been configured

Note: Reset router to factory defaults if it has been previously configured.

  • Browse to http://192.168.1.1/Upgrade.asp
  • Upload .bin file to router
  • Wait for it to reboot
  • Telnet to 192.168.1.1 and set a root password, or browse to http://192.168.1.1 if LuCI is installed.

OEM installation using the TFTP method

Specific values needed for tftp

FIXME Enter values for “FILL-IN” below

Bootloader tftp server IPv4 address FILL-IN
Bootloader MAC address (special) FILL-IN
Firmware tftp image Latest OpenWrt release (NOTE: Name must contain “tftp”)
TFTP transfer window FILL-IN seconds
TFTP window start approximately FILL-IN seconds after power on
TFTP client required IP address FILL-IN

Upgrading OpenWrt

generic.sysupgrade

FIXME These are generic instructions. Update with your router's specifics.

LuCI Web Upgrade Process

  • Browse to http://192.168.1.1/cgi-bin/luci/mini/system/upgrade/ LuCI Upgrade URL
  • Upload image file for sysupgrade to LuCI
  • Wait for reboot

Terminal Upgrade Process

If you don't have a GUI (LuCI) available, you can alternatively upgrade via the command line. There are two command line methods for upgrading:

  • sysupgrade
  • mtd

Note: It is important that you put the firmware image into the ramdisk (/tmp) before you start flashing.

sysupgrade

  • Login as root via SSH on 192.168.1.1, then enter the following commands:
cd /tmp
wget http://downloads.openwrt.org/snapshots/trunk/XXX/xxx.abc
sysupgrade /tmp/xxx.abc

mtd

If sysupgrade does not support this router, use mtd.

  • Login as root via SSH on 192.168.1.1, then enter the following commands:
cd /tmp
wget http://downloads.openwrt.org/snapshots/trunk/XXX/xxx.abc
mtd write /tmp/xxx.abc linux && reboot

Debricking

Failsafe mode

Basic configuration

Basic configuration After flashing, proceed with this.
Set up your Internet connection, configure wireless, configure USB port, etc.

Specific Configuration

FIXME Please fill in real values for this device, then remove the EXAMPLEs

Network interfaces

The default network configuration is:

Interface Name Description Default configuration
br-lan EXAMPLE LAN & WiFi EXAMPLE 192.168.1.1/24
vlan0 (eth0.0) EXAMPLE LAN ports (1 to 4) EXAMPLE None
vlan1 (eth0.1) EXAMPLE WAN port EXAMPLE DHCP
wl0 EXAMPLE WiFi EXAMPLE Disabled

Buttons

hardware.button on howto use and configure the hardware button(s). Here, we merely name the buttons, so we can use them in the above Howto.

FIXME Please fill in real values for this device, then remove the EXAMPLEs

The MikroTik RB921 has the following buttons:

BUTTON Event
EXAMPLE Reset reset
EXAMPLE Secure Easy Setup ses
EXAMPLE No buttons at all. -

Hardware

Info

RB921GS-5HPacD-15S / mANTBox 15s

This seems in fact a RB921 board combined with the MikroTik mANT 15s sector-antenna.

General
Brand MikroTik
Model RB921GS-5HPacD-15S
Versions
Device Type WiFi Router
Availability Available 2019
Comments - general
OpenWrt Support
Supported Since Commit https://git.lede-project.org/?p=source.git;a=commit;h=82626cc145610b8b6485d650693629ef0b943505
Supported Since Release 18.06.0
Supported Current Release 19.07.3
Unsupported
Hardware
Bootloader RouterBOOT
Target ar71xx
System-On-Chip
CPU MHz 720
Flash MB 128NAND
RAM MB 128
Network
Ethernet 100M ports -
Ethernet Gbit ports 1
Switch ¿
Modem -
VLAN ¿
Comments - network ports
Wireless
WLAN 2.4GHz -
WLAN 5.0GHz a/n/ac
WLAN Hardware Qualcomm Atheros QCA9882
Detachable Antennas -
Comments - WLAN
Interfaces
USB ports -
SATA ports -
Serial Yes
JTAG ¿
Comments - USB & SATA ports
Misc
LED count 1
Button count 1
Power supply 12-28 VDC barrel jack, passive PoE 9-30 VDC
Links
Forum Topic URL
WikiDevi URL
OEM device homepage URL https://mikrotik.com/product/RB921GS-5HPacD-15S
Firmware OEM Stock URL
Firmware OpenWrt Install URL http://downloads.openwrt.org/releases/19.07.3/targets/ar71xx/mikrotik/openwrt-19.07.3-ar71xx-mikrotik-vmlinux-initramfs.elf
Firmware OpenWrt Upgrade URL http://downloads.openwrt.org/releases/19.07.3/targets/ar71xx/mikrotik/openwrt-19.07.3-ar71xx-mikrotik-nand-large-ac-squashfs-sysupgrade.bin
Edit the underlying data View/Edit data

Photos

Front:
the 2 sectors-antennas with frontcover removed the stacked antenna-array

Back:
back with pcb and RF-splitter for sectors

Backside label:
Insert photo of backside label

Opening the case

Note: This will void your warranty!

Unscrew the 8 screws visible on the back with a T9 screwdriver.

RB921GS-5HPacD-19S / mANTBox 19s

general Series

Main PCB:
Insert photo of PCB

Serial

port.serial general information about the serial port, serial port cable, etc.

How to connect to the Serial Port of this specific device:
Insert photo of PCB with markings for serial port

FIXME Replace EXAMPLE by real values.

Serial connection parameters
for MikroTik RB921
EXAMPLE 115200, 8N1

JTAG

port.jtag general information about the JTAG port, JTAG cable, etc.

How to connect to the JTAG Port of this specific device:
Insert photo of PCB with markings for JTAG port

Bootloader mods

Bootlogs

OEM bootlog

COPY HERE THE BOOTLOG WITH THE ORIGINAL FIRMWARE


OpenWrt bootlog

COPY HERE THE BOOTLOG ONCE OPENWRT IS INSTALLED AND RUNNING


Notes

Space for additional notes, links to forum threads or other resources.

Tags

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toh/mikrotik/mikrotik_rb921.txt · Last modified: 2020/06/28 13:13 by tmomas