MetaRouter is a new feature in RouterOS 4.0 beta 1 and RouterOS v3.21
MetaRouter is used for the RB400 series boards to create virtual machines.
Each Metarouter instance uses just as much resources as a stand-alone RouterOS installation. This means you need a minimum of 16Mb of RAM for each machine, plus some for the main Router that hosts it. 16Mb is the absolute minimum - it is suggested to have more memory available per each Metarouter.
Currently you can create up to 8 metarouter virtual machines, this number will be increased to 16 in future versions.
In the main machine, you can create up to 8 virtual interfaces that will be connected to the metarouters. Currently the only way to add more, is to use VLAN. Currently it is not possible to use external storage devices (Store) in the metarouter virtual devices.
The MetaRouter function is useful for allowing clients or lower-privilege users access to their own 'router' and config to configure as they like, without the need for a complete second router, or giving them access to the main router configuration.
For example; a WISP can create a virtual router for the clients ethernet port allowing them to define their own firewall settings, while leaving the WISP's wireless settings untouched.
The /metarouter menu gives the following:
- add - allows you to create a new virtual router
- print - lets you list any virtual routers
- enable - to enable a virtual router
- disable - to disable a virtual router
- console - lets you access the console of a virtual router
- interface - lets you make network interface mappings
Creating a Metarouter
[admin@RB_Meta] /metarouter> add name=mr0 memory-size=32 disk-size=32000 disabled=no [admin@RB_Meta] /metarouter> print Flags: X - disabled # NAME MEMORY-SIZE DISK-SIZE USED-DISK STATE 0 mr0 16MiB 0kiB 377kiB running
- name: the name of the virtual router
- memory-size: amount of RAM allocated to the virtual router
- disk-size: amount of HDD in kiB allocated to the virtual router (if 0, size is dynamic) *
- used-disk: currently used disk space
- state: identifies if the metarouter is running or disabled
Note: * be careful when using dynamic HDD size for metarouters, a proxy could fill up all your hosts storage!
Example with no settings
If you will add a new metarouter without specifying any parameters, it will be added with Dynamic HDD size, and 16MiB of RAM:
[admin@RB_Meta] /metarouter> add name=mr1 [admin@RB_Meta] /metarouter> print Flags: X - disabled # NAME MEMORY-SIZE DISK-SIZE USED-DISK STATE 1 mr1 16MiB 0kiB 3kiB running
First, you need to add a new interface to your virtual router. This is done in the interface menu.
The interface command has the following options:
[admin@MikroTik] /metarouter> interface add comment disabled dynamic-mac-address type virtual-machine copy-from dynamic-bridge static-interface vm-mac-address
Let's add one interface:
[admin@MikroTik] /metarouter> interface add virtual-machine=mr1 type=dynamic
On the host physical router the interface appears as a virtual interface:
[admin@MikroTik] > /interface print Flags: D - dynamic, X - disabled, R - running, S - slave # NAME TYPE MTU 8 R ether9 ether 1500 9 R test bridge 1500 10 DR vif1 vif 1500
Connecting to the virtual machine
To connect to your virtual machine, use the console command:
/metarouter console 0
You will see your newly added virtual interface here:
[admin@mr0] > interface print Flags: D - dynamic, X - disabled, R - running, S - slave # NAME TYPE MTU 0 R ether1 ether 1500
To disconnect from the metarouter virtual machine console, hit CTRL + A and then Q to Quit back to your Host console:
[admin@MikroTik] > [Q - quit connection] [B - send break] [A - send Ctrl-A prefix] [R - autoconfigure rate]
Configuring a virtual network
Right now you saw that the virtual interface is visible in the Host Interfaces menu as vif1 and also in the metarouter interfaces menu as ether1. You can add an IP address on both interfaces, and set up networking. Creating a bridge between the virtual interface and a physical interface allows traffic to pass.