CorDES Proprietary Information
27
Figure 16 UDP/IP w/Fixed 20B Bypass Header Example
CDNA-041G
ECU #1
PT 1
CT 0
CT 1
•
Mode may be GCM, CTR or ECB. But is static for that packet stream/use-case.
•
Rates are limited to ~10-20Mb/s maximum (based on UDP packet length).
•
Payload should not exceed maximum MTU to avoid fragementation.
•
Either channel can be configured for up or down link
•
Default IP addresses and Ports are shown. All are configurable via HMI
•
Example is only showing 2x Channels configured for UDP/IP. The other 2x Channels may also be
configured for UDP/IP or TCP/IP independantly.
UDP/IP Client
- Sends data to Encrypt
Send to PT[0] (169.254.100.100::64000)
Downlink Source Ch[1]
UDP
Send to CT[1] (169.254.100.102::64005)
IP
L2
Fixed Bypass 20B
Header
Payload
Enet FCS
UDP
PT 0
2
nd
ECU & channels [3:4] not shown for clarity
PT[0] UDP/IP Server/Client
Mode = Encrypt
opMode = UDP-GCM or UDP-CTR|ECB
IP = 169.254.100.100
UDP Dst 1st IP = 169.254.100.203
UDP Dst 2nd IP = 169.254.100.204
PT Ch[0] Port = 64000
UDP/IP Packet Format w/Fixed Bypass Header
Send from CT[0] (169.254.100.203::64004)
Send from CT[0] Multicast (169.254.100.204::64004)
UDP/IP Primary Server
IP: 169.254.100.203
- Receives Encrypted Data
UDP/IP 2nd Server (Monitor)
IP: 169.254.100.204
- Receives Encrypted Data
PT[1] UDP/IP Server/Client
Mode = Decrypt
opMode = UDP-GCM or UDP-CTR|ECB
IP = 169.254.100.100
UDP Dst 1st IP = 169.254.100.205
UDP Dst 2nd IP = 169.254.100.206
PT Ch[1] Port = 64001
CT[0] UDP/IP Server/Client
Mode = Encrypt
IP = 169.254.100.102
CT Ch[0] Port = 64004
(Direction/Mode/opMode & UDP Dst 1
st
,2
nd
shared w/
PT[0] configuration)
CT[1] UDP/IP Server/Client
Mode = Decrypt
IP = 169.254.100.102
CT Ch[0] Port = 64005
(Direction/Mode/opMode & UDP Dst 1
st
,2
nd
shared w/
PT[1] configuration)
UDP/IP Primary Server
IP: 169.254.100.205
- Receives Decrypted Data
UDP/IP 2nd Server (Monitor)
IP: 169.254.100.206
- Receives Decrypted Data
Send from PT[1] (169.254.100.205::64001)
Send from PT[1] Multicast (169.254.100.206::64001)
