[AusNOG] Mikrotik EoIP Assistance

[Philip Loenneker]

If you happen to be using a CHR for one or both ends, make sure you have at least a trial license on it – they limit throughput to 1Mpbs when unlicensed.

From: AusNOG [mailto:ausnog-bounces at lists.ausnog.net] On Behalf Of Damien Gardner Jnr
Sent: Monday, 31 July 2017 11:22 AM
To: Aus Net Servers Australia Pty Ltd <info at ausnetservers.net.au>
Cc: ausnog at lists.ausnog.net
Subject: Re: [AusNOG] Mikrotik EoIP Assistance

Have you added adjust-mss rules for the EOIP tunnel? (and also on any vlans on it)? If not, it's likely to perform horridly.. (adjusting MTU won't help unless you're adjusting MTU on the hosts on both ends which are talking to each other)

/ip firewall mangle
add action=change-mss chain=forward new-mss=1410 out-interface=eoip-sydney \
    passthrough=yes protocol=tcp tcp-flags=syn tcp-mss=1411-65535
add action=change-mss chain=forward in-interface=eoip-sydney new-mss=1410 \
    passthrough=yes protocol=tcp tcp-flags=syn tcp-mss=1411-65535

on at least one end should do it. (adjust mss as appropriate for your usable mtu)

On 31 July 2017 at 11:16, Aus Net Servers Australia Pty Ltd <info at ausnetservers.net.au<mailto:info at ausnetservers.net.au>> wrote:

Hey Guys,



We have  been trying to configure our EoIP tunnel between two sites. The tunnel is established and passing traffic however the throughput is really slow (under 1mbps) We have changed the MTU temporarily to see if it was a packet fragmentation issue but that does not seem to have fixed the issue, so it has been reverted. The WAN side of both connections is working fine and tests of this show really good and solid speeds



Is there any Mikrotik gurus that could lend a hand to troubleshoot this issue?



Thanks in advanced.



Regards,



Matthew Matters

Director

Aus Net Servers Australia Pty Ltd
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Damien Gardner Jnr
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