nth, just to know..

RouterOS General
1

can anyone with the right experience please write a basic wiki to explain nth feature??

itll be very helpful for all

tnx you all

2

Can everyone without the right experience read the manual before asking such questions?

http://www.mikrotik.com/docs/ros/2.9/ip/filter||0.5344410388772383

3

plus, here are some examples :
http://forum.mikrotik.com/t/nth/8384/1

4

eugene, thanks for your advice about the manual.. ive read it before asking, its just that i dont understand it.


and normis, thanks for the link to my own post.. where i was asking something about nth..


the only thing i want, and i think most of mt users want, is a little bit more complete explanation of this feature, but, if you dont want thanks anyway.


regards

5

example:
nth=Every,Counter,Packet
nth=2,3,0.
2,3,1
2,3,2

divide all packets into groups of three (2+1). The packets will be numbered from 0 to 2. So, a sequence of packets the rule matches looks like:
(0 1 2)(0 1 2)(0 1 2)(0 1 2)(0 1 2)…

the first rule will match the first packet in each group (“Packet”=0). The second rule will match the second packet in each group (“Packet”=1) and so on. Each successful match increments the counter. When a value of “Every” is reached, the counter is reset to 0. For this to work, the “Counter” should be the same for all rules (you can pick any value from 0 to 15, IIRC).

Eugene

6

@eugene: so, for 5 wanes the nth is:
4,6,0
4,6,1
4,6,2
4,6,3
4,6,4

???

M.

7

thank you a lot man.. at last i can understand it well!!

tnx again, c ya

8

yes

9

I think there is somethign wrong with this function…
i have two wan now, and nth is 1,1,0 and 1,1,1

So, my 10 session download start with 5 Odd que
and 5 even which is find but after half an hour it all
will switch to even which is (1,1,1)

any reason for this?

and how can I load balance three line with different value?
like I have 1 pair of 2mb line and single 1mb line.

how to LB that ? nth number?

10

Stupid but it might work? Give it a try.

Divide your packets to groups of 5 instead of 3 ie as if 5 wan Gateways(GW)

set mangle rules with different nth

In the static routes set two entries for each of the 2Mbps and 1 entry for the 1Mbps

leave a gap between the routed packets:

Con 1 ==> GW1
Con 2 ==> GW2
Con 3 ==> GW1
Con 4 ==> GW2
Con 5 ==> GW3

Hope it works, maybe dumb logic. LOL

11

Hi,

In fact this is what I had in mind and I gave it a try. and it did worked.
however I’m working on something else to combine with it.

Thanks

12

Hellbound, thx for your response.

Please update with any other achievements.

Good Luck.

13

Dear Eugene

I have 10 IPs waht Is nth
Is it

9,11,0
9,11,1
.
.
.
.
9.11.9

and I have one gateway to theses IPs


and can you write me the configration with nat and transparent proxy for caching


ISP (10.1.1.1) -----------(10.75.75.110-119/8 ) ---- MT(2.9) ---- AP ---- Clients(12.59.42.0/24)

I want Load balance
I need to use all bandwidth it mean (10*128kb) because my ip downlaod 128 and up 64
even if one client download he can get the whole bandwidth not only 128k

Beat Regards

14

That’s a broken link Eugene.

15

I posted twice because I got broken SMTP forum error: sendmail.php or something.

16

first of all look at the date of his post :smiley::smiley:

http://wiki.mikrotik.com/wiki/Nth
here is detailed explanation