H3C Technologies H3C MSR 50 - Manual (Page 20)

12
MSCA/MSCB
Appearance
Figure 11 MSCA front view
Figure 12 MSCB front view
Specifications
Table 8 MSCA/MSCB specifications
Item MSCA MSCB
ESM slot 2 2
VCPM slot 1 1
VPM slot 4 0
NOTE:
•
MSC (multi-service card) is installed in the slot provided on the backplane of the MSR 50 routers to carry
various service modules.
• MSCA is designed to work with MPUF while MSCB must be applied with MPU-G2.
ESM module
Installed on an MSC, ESM module supports IPSec and by using hardware encryption expedites IP packet
encryption. The use of hardware encryption/decryption and hashing operation allows the router to
encrypt packets with high performance and reliability.
The encryption card is optional. On a router installed with an encryption card, the main control board
functions to route IP packets and implement encryption-enabled VPN, while the encryption card functions
to encrypt packets.
Table 9 Encryption card attributes
Attribute Description
Protocol IPSec
Hardware encryption algorithm
Key algorithms: DES, 3DES, AES
Authentication algorithms: HMAC-MD5-96, HMAC-SHA-1-96
VPM and VCPM modules
VPM (Voice Processing Module) functions to coding/decoding, EC and CNG of voices.
VCPM (Voice Co-Processing Module) processes the voice data together with VPM.