We run MRTG to graph bandwidth everywhere we have a Mikrotik.
I noticed today we have a location with 5 interfaces.
Eth 1 and 2 are in a bridge1 Eth 3 and 4 are in a bridge2
When I initially set up MRTG to graph this location I added to our main MRTG config file only the 2 bridge interfaces.
The created graphs show less then 512k traffic over bridges.
In winbox I noticed the traffic showing going over the bridged interfaces is on par with what MRTG is graphing.
In winbox in the interfaces window the individual interfaces that make up the bridged interfaces show much more traffic.
My thought is shouldn’t traffic seen on bridge1 be the combination of all the traffic seen on the bridge’s individual ports?
I don’t understand this discrepancy between whats on the bridge interface and the individual ports that make up the bridge interface.
For the time being I’ve opted to just graph the individual interfaces, but can someone please explain why this is.
I’ve looked this over many times, it doesn’t really explain why traffic seen over individual interfaces isn’t seen over the bridge interface they’re a part of.
The diagram is great for needing to know where to mark and apply actions to traffic, but doesn’t explain where in the flow the traffic seen by individual interfaces is not being seen by bridge interface
for example my ether 1 shows between 5-10 meg of traffic on the rx side this is also seen on ether2 tx side which makes sense as its coming in eth1 and being pushed out ether 2. but the bridge interface that these 2 ports are in shows on average like 5-7 kbps. on tx or rx side.
Does the traffic not goin far enough into the logic to be seen over the bridge interface, I guess better question would be the little bit of traffic that is being seen how does it make far enough to be seen by the bridge interface.
I’m trying to learn if this, I’ve always thought bridged traffic is the sum of all traffic going over the individual ports in the bridge.
This may seem like a moot point, but I don’t like to not have an understanding of these concepts.
I’ve gotten quite good with my management of mikrotik routers thanks to this community, but there’s always more to learn which I enjoy.
I will say it’s possible the diagram may hold the answers but at this point I’m just not seeing it.