Does Mikrotik support Round Robin? To us it appears that it only supports fragmentation (packet split).
What we’re seeing is the following (on the pppoe concentrator side):
I send a 1000-byte ICMP packet, the (also 1000-byte) response in a 2 line bundle looks like this:
Line 1:
03:10:56.072478 PPPoE [ses 0x66f] MLPPP, seq 0x000, Flags [begin], length 519
Line 2:
03:10:56.071328 PPPoE [ses 0x66e] MLPPP, seq 0x000, Flags [end], length 518
What this means is that for situations where the line count is high (say, 6 lines), your max frame size is now MTU / 6. So for a 1492 byte MTU, it’s 248 bytes. Now apply PPPoE and ATM overhead on that frame (61 bytes). Your overhead % on 6 lines is 61 / 248, or ~25%. Round-robin, by comparison, would offer overhead equivalent to a single line bundle. This is why this feature would be useful to us and why it exists in other stacks.
We are extremely happy with the Mikrotik hardware and are now using the RB2011’s, however the round robin capability would greatly help us when we deploy 4+ lines. Does anyone have a good solution for this?