https://community.cisco.com/t5/network-security/multiple-encryption-macsec/m-p/4660549#M1092267 <P>Hello all,</P><P>what I'm about to ask is going to be a weird one and doesn't make much sense, but I have a customer that asked the following, that I encrypt over encryption and I explain, to program two Cisco Switches to use MacSec and that the connectiong between this two switches to be done with 80Ghz radios instead of direct copper from switch to switch.</P><P>This radio encrypts on AES and the MacSec of the switches are encrypting in AES128.&nbsp;</P><P>This will be a double encryption.</P><P>Now I tried this and the MacSec negotiation between switches comes up, the protocol comes up, but then basically no data traverses the link afterward.</P><P>If the encryption of the radio is turned off everything works fine but of the encryption of the radio is turned on, data stops flowing but the MacSec negotiation is ok.</P><P>I would like please to understand the why this doesn't work and data doesn't flow. Anyone please has any idea why?</P><P>Thank you</P><P>&nbsp;</P> Fri, 29 Jul 2022 22:27:31 GMT simoesmarco8626982 2022-07-29T22:27:31Z https://community.cisco.com/t5/network-security/multiple-encryption-macsec/m-p/4660549#M1092267 <P>Hello all,</P><P>what I'm about to ask is going to be a weird one and doesn't make much sense, but I have a customer that asked the following, that I encrypt over encryption and I explain, to program two Cisco Switches to use MacSec and that the connectiong between this two switches to be done with 80Ghz radios instead of direct copper from switch to switch.</P><P>This radio encrypts on AES and the MacSec of the switches are encrypting in AES128.&nbsp;</P><P>This will be a double encryption.</P><P>Now I tried this and the MacSec negotiation between switches comes up, the protocol comes up, but then basically no data traverses the link afterward.</P><P>If the encryption of the radio is turned off everything works fine but of the encryption of the radio is turned on, data stops flowing but the MacSec negotiation is ok.</P><P>I would like please to understand the why this doesn't work and data doesn't flow. Anyone please has any idea why?</P><P>Thank you</P><P>&nbsp;</P> Fri, 29 Jul 2022 22:27:31 GMT https://community.cisco.com/t5/network-security/multiple-encryption-macsec/m-p/4660549#M1092267 simoesmarco8626982 2022-07-29T22:27:31Z