IIRC, disabling TSO did afford us a marginal speed boost. The idea as explained to me was that the hypervisor was utilizing this on the physical cards while providing a virtual instance to the router inside. In essence, optimization was being performed twice, both on the physical layer/interface car...

Is TSO enabled by default, and if so how do you turn it off in Hyper-V? I managed to answer my own question on that one. For anyone else intereseted: Yes, it is enabled by default in the hypervisor. To disable it, run this in a PowerShell on the system: Disable-NetAdapterChecksumOffload -Name "...

I've been watching the video and going over the slides from your MUM presentation and have a few questions for you guys at IPA if you don't mind. 1) Have you done any real world data on a Hyper-V setup to get an idea of what the hypervisor can handle through the actual interfaces? We are testing a H...

You can tweak the filter you made a little and get it to work: /routing filter add action=accept chain=ospf-out prefix=10.0.0.0/8 protocol=ospf prefix-length=8-32 /routing filter add action=accept chain=ospf-out prefix=192.168.0.0/16 protocol=ospf prefix-length=16-32 /routing filter add action=accep...

OSPF cannot distinguish subnets like that. Starting an OSPF session over the links will balance traffic equally between them. If they are majorly dissimilar, ie: a 500 Mb/s link and a 1 Gb/s link; you can use vLANs to make them equal. IP Architechs calls this method "transit fabric" and ha...

We are implimenting eBGP on our routers across our network and ran into an issue today. Our routers are set up as follows in the diagram with the black routes showing outbound through the black lines following the arrows to the internet and the blue lines as backups (mostly to handle bandwidth limit...

Just a small note on the 4011's. If you are planning on using the 10Gb SFP+ port, they only support active fiber connections so passive (copper) patch cables are not supported and in our case didn't pass full and or any traffic. We are using CCR1009 routers for our sites connected into switches if w...

Is there any BGP/OSPF Wizardry that would fix this instead of just moving it to the routing IPs to mitigate this issue on these sites?

If you want to do an upload load-balancing scenario, you'll need two full routing tables or a default route / partial-route table at your edge borders; also an important advice if you want to deploy this scenario (do not use the rule drop invalid-tcp-connections at the forward/input firewall rule)....

I am trying a lab setup to mimic some of the routers we have in the field. We like the idea of using eBGP on top of OSPF to get ECMP across our links and still be able to send traffic the direction we want using weights and local pref. The problem I'm looking at is based on these 4 routers: netmap.J...

We recently installed a server running ESXi and CHR (6.44.1) with a P10 license. When we try to initiate a TCP bandwidth test from another router to the CHR, it reports back "test unsupported". Following a suggestion posted on another forum, I tried adjusting the connection count to 1. Aft...

Is it possible to achieve something similar to ECMP with MPLS using a second IGP overlay with TE?

For instance:
OSPF with ECMP base -> MPLS LDP -> MPLS TE -> Secondary OSPF/BGP Instance utilizing the TE interfaces?

We have a two POPs that we are focusing on in our network. They are connected with both a 1G fiber transport and two 236Mbps wireless backhauls. We are using ECMP in OSPF to achieve a sort of bandwidth sharing with them, but would like to enable MPLS across our network. With this being said, we woul...

We have a router that is a hub for several sites before being passed off to our different uplinks with different costs. We would like to cost a route from a specific site (1 network) to go to a "higher cost" router. Is this possible with Mikrotik OSPF? My colleague remembers being able to ...

My company just installed a PowerRouter v4 ( http://www.linktechs.net/productcart/pc/viewPrd.asp?idproduct=2046 ) to replace 4 CCR routers. It is functioning properly except it is not broadcasting a route over OSPF.  This router is an edge router, so we have our main IPv4 blocks null-routed by givin...

That would be the route I would take.

So the rule is correct ? Did you see it full ? The rule appears to be correct, but Winbox does not show everything on the line display, if you want to post the output of those lines after running the code I posted, I can say that they are correct. The other thing I'm seeing is since you are using P...

If concerned about syn flooding, those rules should be on any router with a public IP address. With one huge recommendation, set up a test router with your PPPoE setup and make sure the rules don't block any PPPoE traffic they're not supposed to (I'm not familiar with PPPoE, but I have enabled rules...

It depends on the current setup/your needs... If you are running NAT between your servers and the "outside world," you will need to put the public IPs on an external facing interface and then port forward the required ports directly to your servers. The best way is finding the individual p...

All of the routing on our network is done with Mikrotiks (RB1100AHx2 and CCR mostly). I am trying to implement VoIP prioritization without having to set reservations on speeds. Links between the routers range from 50Mb/s to 2Gb/s (aggregate) and setting a speed could cause problems if a main link go...