Nortel 1100 安装指导
Appendix A Technical specifications 181
Nortel VPN Router Installation — Hardware Options
VPN Router Security Accelerator
Nortel supports the VPN Router Security Accelerator option card that performs
bulk encryption and compression algorithms for IPsec tunnel traffic.
bulk encryption and compression algorithms for IPsec tunnel traffic.
The following figure shows the VPN Router Security Accelerator card.
Figure 74
VPN Router Security Accelerator card
The VPN Router Security Accelerator card uses a single Hifn 7854 chip for
encryption and compression and has 64 MB of onboard RAM. It supports
Advanced Encryption Standard (AES)-128 cryptography with SHA-1
authentication and triple Data Encryption Standard (DES) cryptography with
either Message Digest 5 Algorithm (MD5) or Secure Hash Algorithm (SHA)-1
authentication.
encryption and compression and has 64 MB of onboard RAM. It supports
Advanced Encryption Standard (AES)-128 cryptography with SHA-1
authentication and triple Data Encryption Standard (DES) cryptography with
either Message Digest 5 Algorithm (MD5) or Secure Hash Algorithm (SHA)-1
authentication.
The VPN Router Security Accelerator card is the successor to the Hardware
Accelerator card. The Hardware Accelerator Hifn 7811 card has been
discontinued effective January 2006 although Nortel still supports this card.
Along with providing support for AES, the VPN Router Security Accelerator card
provides increased encryption throughput and improved compression
performance.
Accelerator card. The Hardware Accelerator Hifn 7811 card has been
discontinued effective January 2006 although Nortel still supports this card.
Along with providing support for AES, the VPN Router Security Accelerator card
provides increased encryption throughput and improved compression
performance.
At startup, when you manually enable an accelerator, or when the accelerator
recovers from a failure, the power-on self-test (POST) verifies the integrity of the
hardware. This test includes validation of the accelerator’s encryption, media
access control (MAC), and compression algorithms against their software
counterparts. In the event POST fails, the accelerator is set offline.
recovers from a failure, the power-on self-test (POST) verifies the integrity of the
hardware. This test includes validation of the accelerator’s encryption, media
access control (MAC), and compression algorithms against their software
counterparts. In the event POST fails, the accelerator is set offline.
Note: The VPN Router Security Accelerator card has one green LED;
the Hardware Accelerator card has no LEDs.
the Hardware Accelerator card has no LEDs.