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antonioff
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Ppppoe-connection server and freeze big download

Tue Jun 18, 2013 10:42 pm

Hi all,
I have server pppoe in routerboard rb1000 5.24 it's all ok, only one problem:
My client-ppp is connected to internet without problems, but when tried download big file, download started for a few seconds and freeze

my pppoe-server mtu/mru:1492 and change mss to 1448 with firewall mangle


Idea?
 
krajnalic
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Joined: Wed Nov 30, 2011 1:39 am

Re: Ppppoe-connection server and freeze big download

Fri Jun 21, 2013 1:21 am

I found that the best performance/compatibility is when mtu is set to 1360. You should do:

/ip/firewall/mangle
add action=change-mss chain=forward comment="MTU change to 1360" disabled=no new-mss=1360 passthrough=yes protocol=tcp tcp-flags=syn tcp-mss=1361-65535

also, RB1000 performance is best with ROS4.17 . V5 eats a lot of CPU power
 
antonioff
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Re: Ppppoe-connection server and freeze big download

Fri Jun 21, 2013 10:28 pm

hi krajnalic,
i change mangle for change-mss in 1360, add browsing site is very very fast.

But impossibile download file, freeze download and fluctuating bandwidth.

My test is with router lan directaly connected to routerboard Mikrotik and connection pppoe 1480 mtu and mru (tried wiht 1492 same result)

i don't know.

I think problem is ip fragment....but now i don't know.
 
krajnalic
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Re: Ppppoe-connection server and freeze big download

Sun Jun 23, 2013 1:30 am

You have to add the rule to pppoe server, not client
 
antonioff
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Re: Ppppoe-connection server and freeze big download

Tue Jun 25, 2013 12:53 am

Resolved
Add policy nat :)
 
dzieva
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Re: Ppppoe-connection server and freeze big download

Wed Jun 26, 2013 4:11 am

Resolved
Add policy nat :)
Could you explain what you did.

Thanks

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