Hello.
I have searched, and have not found something that can be of use to me, in the following scenario:
I have three CRS125-24g.
CRS A is having internet access, from an uplink, on port 1. Separate domain server with dhcp server, on port 2.
I want to link CRS A with :
two ports, 23 and 24 to CRS B, to ports 1 and 2
two ports, 21 and 22 to CRS C, to ports 1 and 2
This will be a bridge, no spanning tree, nothing fancy.
How can i configure it so I don’t have a loop between the two interfaces each of these routers is linked to each other, and so that the traffic is forwarded, “plain” (no routing, no vlan, no anything) between them ?
[ Two more questions:
a. will the link provide failover ? (eg. one cable goes out, the traffic goes only trough the other ? [EDIT: It does !]
b. will the link aggregate ? I could have more than 1 g traffic on the link between the two switches ? ] [EDIT: Does not seem to do it. even with balance-rr checked]
If I missed something on the forum or the wiki which can help me, direct me there. If not, please help me “on the subject”.
Somehow I managed to do it, by bonding the 2 interfaces, on each side, and bridging the bonding with the master interface set for the rest of the ports.
But on a btest I get 650 Mbit/s max.
That is all i can get from a crs ?
Btest uses the CPU to generate and measure the traffic, so I would certainly expect to get poor results with Btest on a CRS (or RB2011 or RB9xx series) unit. It’s recommended to test between two devices that are both connected to the CRS.
Thank you.
I know that.
The test is done exactly like that.
From one CRS to another, passing trough a third CRS.
Still, could not get better result.
CPU 70%-80%. Never 100%. Plenty of lost packets.
If anybody is willing to give me another solution ?
Now the config is as this:
Ether 1 and ether2 - bonding1
ether 23 and ether24 - bonding2
ether4 to ether22 - slave, master is ether 3
Bondings go to other CRS, configured the same way, to form a large switched network. ( 80 pc’s, but on different locations, so from there is the need for multiple switches)
bridge between bonding1, bonding2 and ether3
cpu: idle - 3-7%, on btest - 70-80%.
Traffic - 650Mb/s, or close to it, one direction, udp, 1500 size packets. Worse on tcp.
The CRS125 has a 1Gbps link between CPU and switch. The btest will be running on the CPU, so the most you can hope for from a btest running on a CRS125 would be 1Gbps [or, ~940Mbps TCP].
Clearly, doing L3 at wire speed isn’t one of “the best features”
