
H3C AR 46 Series Routers Installation Manual
Chapter 1 Router Overview
1-14
Caution:
Data loss occurs when a CF card is plugged or unplugged during a read or write
operation.
IV. Encryption daughter card
An encryption daughter card can be installed on the ERPU. It 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. In addition, the card supports DVPN.
The encryption daughter 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 daughter card functions to encrypt packets.
Table 1-11
Encryption daughter card attributes
Attribute
Description
Protocol
IPSec, DVPN
Hardware encryption algorithm
Key algorithms: DES, 3DES, AES
Authentication algorithms: HMAC-MD5-96,
HMAC-SHA-1-96
1.4.3 ERPU (H)
Figure 1-11
ERPU(H)