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NE40E V800R010C10SPC500 Feature Description - Network Reliability 01

This is NE40E V800R010C10SPC500 Feature Description - Network Reliability

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Distributed NAT444 Inter-board Hot Backup Solution

Distributed NAT444 Inter-board Hot Backup Solution

On the network shown in Figure 11-11, CPEs dial up through the BRAS (with CGN integrated). The BRAS assigns private IP addresses, post-NAT IP addresses, and port segments for CPEs. After receiving a packet from a PC, the corresponding CPE performs the first-level NAT for the packet and then sends the packet to the BRAS. Upon receipt of the packet, the BRAS performs the second-level NAT. Taking into consideration the two NATs and CGN functions distributed on various BRASs, 1:1 inter-board hot backup is deployed to achieve CGN service reliability. This solution is called distributed NAT444 inter-board hot backup.

Figure 11-11 Distributed NAT444 inter-board hot backup based on port pre-allocation
Updated: 2019-01-03

Document ID: EDOC1100055045

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