Status: Work In Proggess, but looks we got very close

Caution: All code and features to be considered for now as ALPHA versions

Main part of network Switch AR8316 support is integrated into Backfire 10.03 as Add ar8216 support and network config for RouterStation Pro and RouterBoard RB-450G (r20723)

Changeset (r20723) provides default network config for RB450G as following etc/defconfig/rb-450g/network

For overview of installing OpenWRT using serial cable use: Routerboard 450G and OpenWRT See sample on beginning of thread

For now just links to relevant OpenWRT discussions with latest information's so you can help us testing or file your RFE's:

Current set of patches:

RouterBoard RB450G patches

Other Related Forums:

rb450g (rb4xx) support status

AR8316 Switch Support

RB450 - using Five Ethernet Ports

Note:

AR8316 Switch is also integrated into Ubiquiti RouterStation Pro

UPDATE: More details on image installation are located here.

Official Specification for Microtik RouterBoard 450G

• Some users of RB450G state then MicroSD slot is not designed for regular push/pull operations and microSD cards are now fit there well,
  plus microSD slot is on opposite side of board and is not accessible in many RB450G enclosures designed originally for older RB450 model (no access hole),
  so when using old RB450 enclosure you need to be fully dissemble unit to fix / add / remove microSD card.
  List of microSD cards know to work on RB450G with original Microtik RouterOS
• Some information about Atheros AR8316 network Switch capabilities is available here
• CPU can be overclocked to 800Mhz from firmware (bootloader)
• Warning: Unit use a proprietary max 28V PoE (Power on Ethernet), RB450G don't work with standard 48V PoE solutions !!!

Schematic Component layout with naming is in RB450G Quick Guide

RB450G have standard RS232 connector, work with simple null modem cable. Testing with standard port in PC. Connection use 1150008n, not without hardware handshaking

Serial connection is last resort for bootloare RouterBOOT update with XMODEM Microtik Manual:Bootloader upgrade

JTag port is present on board, but pins are not soldered and there is no empty to solder in pins holes.

Another product from Microtik RB443 use this JTAG configuration:

   CPU JTAG in RB433 includes this 7 pins.
      7    6    5    4   3   2    1
    TRST  TDI  TDO  TMS  X  TCK  GND

How to connect to JTAG interface, and how to reflash the device with JTAG tools

See port.jtag for more JTAG details.

Verify and make a nice table after similar to one in RouterStation Pro

From AR8316 Switch Support forum

The AR7161 has two Ethernet controllers, therefore there are two interfaces, eth0 and eth1. one of these is the wan port, the other is the connection to the CPU port of the switch. The AR8316 provides the physical ports for both controllers, but they are separated internally.

On the RB450G, it looks like this:

  +-----------+       +-----------+
  |           | eth0  |           |
  |           +-------+----------5+-Eth1 (POE)
  |           |       |           |
  |  AR7161   |       | AR8316 +-1+-Eth2
  |           | eth1  |        +-4+-Eth3
  |           +-------+0-------+-3+-Eth4
  |           |       |        +-2+-Eth5
  +-----------+       +-----------+

• BIOS Reset Button between Power and LEDs – loads backup RouterBOOT Loader Firmware. Just hold button after power unit on.

• ROS Reset Jumper – Inside unit (on board) in corner market reset, originally used in RouterOS to reset (load) RouterOS software to defaults.

• Note: On board is also one classic Jumper - just another power connection.

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