20 Jul
2015
20 Jul
'15
11:42 a.m.
On 2015-07-20 17:41, Assi Friedman wrote:
(Please trim inclusions from previous messages)
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Folks:
I just brought my ampr host back online after moving to a new facility.
My
initial configuration is to enable internet <-> amprnet connectivity.
So I
have all traffic in both incoming and outgoing directions routed IPIP'd
via
UCSD. The host is Linux Fedora based (will be transitioning to CentOS
sometime...) and I used the guidelines set on the wiki. One unexpected
thing is packet loss. I am seeing very slow performance using this
approach
and rather poor packet loss. Are there any issues or QoS policies
implemented on the amprnet router at UCSD?
Thank you,
Assi kk7kx/4x1kx
AMPRNet host: kk7kx.ampr.org (icmp & http only for now)
Internet host: phantom.kiloxray.com (hosts kk7kx)
Performance issues might be related to the tunnels reduced MTU and hence
reduced TCP MSS. You want to "clamp" the TCP MSS. You may also make sure
that you do not filter ICMP DTB messages, just in case some
systems/softwares make of the DF bit.
Packet loss is a different issue, obviously there will be no performance
when you have packet loss. So in any case you will have to fix the
packet loss first.
73 de Marc, LX1DUC