Hi Jake, On 04/08/16 14:19, Jake Snyder wrote: > Slightly different test, Meraki SSID, with a MBA13 running 10.10.5.
Thanks for giving it a test. > I did a packet capture on the AP filtered for arp and used wireshark on the > Mac with the same capture filter. I'm only tracking arp requests, since > that's all I should see on the MBA. 100% arp requests sent OTA from the AP > were seen by the MBA. But this is an older 11n MBA. I'll get my hands on an > 11ac device tomorrow and rerun the test. How many ARP requests were on the network? In one case in 75 seconds I saw 598 on the 10.9.5 laptop, with the 10.11.5 laptop seeing 184. Filtered with (arp.opcode==1) && (eth.addr==ff:ff:ff:ff:ff:ff). Filtering just on eth.addr==ff:ff:ff:ff:ff:ff I see 1863 vs 564 packets, roughly evenly split between NBNS, NetBIOS Browser and ARP requests with a touch of Dropbox LAN Sync and BOOTP (DHCP). Extending it out to eth.ig==1 (all broadcast/multicast traffic) it's 4353 vs 1310, with the addition of mDNS and IPv6. > Is it possible you are in promiscuous mode in Windows? You shouldn't see the > arp responses for anything that client didn't send, or in responses to the > clients request unless promiscuous mode is enabled. which then isn't a fair > test of what the laptop did or did not hear. My baseline hardware was a 15" Mid-2012 rMBP running 10.9.5, which is only 11n capable. When rebooted into 10.11 it also exhibits the problem. Thanks, -- James Andrewartha Network & Projects Engineer Christ Church Grammar School Claremont, Western Australia Ph. (08) 9442 1757 Mob. 0424 160 877 ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
