I have installed Mikrotik router os 3.0 upgradable upto 3.x Licence level 4. Installed on a PC with Pentium-4 1.8GHz and DDR-1 512MB RAM. Now I want to install it on a Celeron 2.4GHz and 4GB RAM. What is the size of maximum RAM supported by Mikrotik?

2GB

If i want to use 4GB, then will Mikrotik support it?

no, it will only recognize 2gb

What would be the point of puting that much ram into a router?
my router use's like 40mb max. and it has 1gb in it.

NickOlsen is right, there is no need to put that much RAM in a router, cause MT router don't need too much RAM for any of it's job not even for it's web proxy cache.

Thanks

N.B: MT with external cache server is cool.

Is it not so good for web proxy to use 2GB of RAM. I installed Mikrotik 2.9.44 on a PC with 2GB RAM, but it shows only 884.5MB. What happened to other RAM space? 2GB RAM supported by which version of mikrotik ?

v2.9 = 1GB
V3 = 2GB

Max

I installed Mikrotik 3.16 in a pc with 2gb RAM. But it uses a little bit cache in RAM. How can I increase RAM usage for Web Proxy cache?

Dear jewelbd,

Haven't I told you that MT doesn't use much RAM for its web proxy cache also. There is noway you can configure MT to use more or desirable RAM amount(what you want) for it's web proxy cache. If you want to tune your cache you have to switch to squid cache server.

BTW MT cache is also good.

Thanks

But my previous Mikrotik 2.9.44 used 512MB RAM fully. So why that version use so much RAM. There was an option for maximum cache size, but that is not available in newer version. If it has no work of 2GB RAM so why it support it?

I have a couple of x86 routers running v3.17 with routing-test & mpls-test using 128MB of ram.
It has about 400 OSPFv2 routes, 140000 IPv4 BGP routes, no web-proxy. OSPFv3 IPv6 isn't running yet nor is BGP IPv6.

Here are a few items that can use up RAM:
MetaRouter
Xen
Full IPv4 & IPv6 BGP routes will need a router with 512MB.
RouterOS with everything running, web-proxy, OSPF, RIP, BGP Full internet routes, IPv6, UserManager, Dude, Calea, hotspot, etc. should get close to 2GB under full usage.


If you want to have 4GB in a machine and run RouterOS, a solution would be to install Xen on Linux Dom0 and run RouterOS virtually with up to 2GB of RAM. You could also run Squid on that Linux with more than 2GB of ram and have RouterOS only use the normal 128-512MB of RAM inside the Xen virtual machine.

Mikrotik might have 4GB or atleast 3.5GB of ram enabled on RouterOS v4, since v2.9 could do 1GB and v3 can do 2GB. I would prefer them get SMP support stable before raising the RAM limit. And then the next step after 4GB would be getting 64-bit support for greater than 4GB of RAM, PAE could be one solution but 64-bit is less trouble.

Hello, I' running mikrotik 3,20 for BGP router. I've three peering, and using machine core2quad 2,66GHz 4GB RAM, but only 2GB detected.
The problem, my router often hang if I load more than two peering.
Anybody can help me, how to configure 4GB RAM on mikrotik?

May I reopen this topic and suggest the fact that more ram support would be of value?

well said normis

Well if I have it, why wouldn't I be able to use it? I don't get it...

If I want to have 30 bgp full table peers (this is possible you know?!), why should I run out of RAM?

May I reopen this topic and suggest the fact that more ram support would be of value?

why? RouterOS doesn't use any RAM. It's not a 3D game

I'm not arguing for more RAM, but I have seen the above statement made several times in this forum by MT and I'd like to understand what "any" means.

Of course ROS uses RAM. It can't function without RAM. (the 450G posting this message uses 20MB and it is 99% idle)

So, "RouterOS doesn't use much RAM" might be a better statement?

Still I don't get this humor... Maybe I am misunderstood, the point is not running out of it, but not running out of it.

Edit: And btw, I do understand the point. Why should we let it see more than 2 GB of RAM? Our 2GB hardware platforms won't sell as well.

This is limitation of ROS or of current used kernel or of something else ?
Any plans to extend this, may be in v6 ?

If I want to start 2 VM, each with 1 Gb or RAM inside ROS ?

See attached image, > 90% of 2GB of RAM used, 404K BGP prefixes. No iBGP prefixes (yet). No IPv6 BGP prefixes (yet).

Looks like we'll have to buy Cisco, which is a shame since we just commisioned this box and an iBGP counterpart, each with 16GB of RAM, not realising how obsolete ROS had become...

We are in nearly the exact same situation as LigntnetBarry. Anyone know of any plans in the near future to increase this limit?

See attached image, > 90% of 2GB of RAM used, 404K BGP prefixes. No iBGP prefixes (yet). No IPv6 BGP prefixes (yet).

Looks like we'll have to buy Cisco, which is a shame since we just commisioned this box and an iBGP counterpart, each with 16GB of RAM, not realising how obsolete ROS had become...

Cloud Coure Router series don't have any RAM limit. If you use the CCR, you can install 16GB or more (depends on how big SODIMM you can find)