Anyconnect slow with macbook pro wireless

greysaves · ‎01-18-2009

I am having an issue with anyconnect verison 2.1.0148 on all wireless macbook connections. When I am plugged into a Lan line the throughput seems fine. Anytime I attempt to use the wireless on the macbook pro to connect to anyconnect the throughput is unacceptably slow. I can barely use RDC or apple remote desktop when connected wireless. I have tried changing my mtu size. I would assume that this was an issue with the ssl vpn client, but it is only slow for wireless anyconnect sessions.

miomalle · ‎03-28-2009

Hi,

I had a similar problem on our wireless network and after long lasts we found it was the Mac. As you say, the speed was so slow, and we were using 802.11n!

I found that entering these commands helped on the Mac:

Changes

sudo sysctl -w net.inet.tcp.delayed_ack=0

sudo sysctl -w net.inet.tcp.rfc1323=0

sudo sysctl -w net.inet.tcp.recvspace=32768

sudo sysctl -w net.inet.tcp.sendspace=32768

sudo sysctl -w net.inet.tcp.win_scale_factor=1

sudo sysctl -w net.inet.tcp.sockthreshold=0

Defaults

sudo sysctl -w net.inet.tcp.delayed_ack=3

sudo sysctl -w net.inet.tcp.rfc1323=1

sudo sysctl -w net.inet.tcp.recvspace= 65536

sudo sysctl -w net.inet.tcp.sendspace= 65536

sudo sysctl -w net.inet.tcp.win_scale_factor=3

sudo sysctl -w net.inet.tcp.sockthreshold=64

Hope this helps

Mike