Category Archives: wireless network

CSMA/CD and full duplex for wireless? It could be coming

Posted on 2018/03/23 by

The problem with existing wireless communications is that once a device starts transmitting, it doesn’t know if another device has transmitted at the same time until it has finished transmitting. This may be the solution to evercome that Continue reading →

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Posted in blog, opinion, wifi, wireless network | Tagged , | Leave a comment

CCNA Certification Changes 2013 Summary

Posted on 2013/04/03 by

On 26 March 2013, Cisco announced new CCNA certifications.. Here is my interpretation of the changes. In a nutshell ICND1 is now considerably harder, absorbing much of the ICND2 content (IPv6, ACLs, VLANs and OSPF) while ICND2 seems to be … Continue reading →

Posted in 802.1ad, 802.3ad, 802.3ax, ACL, CCNA, Certifications, Cisco, EIGRP, Etherchannel, ICND, ICND1, ICND2, IPv6, New CCNA certification, New Cisco certifications, opinion, OSPF, portfast, rant, rapid spanning-tree, RIP, Routing, spanning-tree, VLANs, VLSM, VTP, wifi, wireless network | 6 Comments

Apple’s deeply buried airport command

Posted on 2012/07/15 by

I wanted to check which wireless AP my new Mac had connected to, so I entered the command: airport -I …but it didn’t work!  I’d become so used to using this on my MBP that I’d forgotten that this command … Continue reading →

Posted in BSSID, Mac OS X, Macintosh, Memory Jog, wifi, wireless network | Tagged , , , , | 1 Comment

Finding the BSSID of the Access Point your Macintosh is connected to

Posted on 2011/07/19 by

I have three APs in my house (upstairs, downstairs and in my lady’s chamber;)) and in following the principles of good networking design, I have given them all the same SSID. Trouble is, when I move from upstairs to downstairs … Continue reading →

Posted in BSSID, Mac OS X, Macintosh, SSID, wifi, wireless network | Tagged , , , , ,