On the request of BE the MAC authentication will be enabled on all HP 3500 type of switches on the Technical Network. This will be applied together with a firmware upgrade, the operation will cause a 5 minutes interruption on the following services:

https://network.cern.ch/sc/fcgi/sc.fcgi?Action=Describe&Service=S354-R-IP64
https://network.cern.ch/sc/fcgi/sc.fcgi?Action=Describe&Service=S354-R-IP6
https://network.cern.ch/sc/fcgi/sc.fcgi?Action=Describe&Service=S874-R-IP30
https://network.cern.ch/sc/fcgi/sc.fcgi?Action=Describe&Service=S874-R-IP1
https://network.cern.ch/sc/fcgi/sc.fcgi?Action=Describe&Service=S874-R-IP49
https://network.cern.ch/sc/fcgi/sc.fcgi?Action=Describe&Service=S874-R-IP50
https://network.cern.ch/sc/fcgi/sc.fcgi?Action=Describe&Service=S874-R-IP86
https://network.cern.ch/sc/fcgi/sc.fcgi?Action=Describe&Service=S874-R-IP62
https://network.cern.ch/sc/fcgi/sc.fcgi?Action=Describe&Service=S874-R-IP91

Following the intervention only devices with a registered MAC address can establish a connection.