H3C Technologies H3C SecBlade LB Cards - Manual (Page 14)

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Figure 6 Network diagram
In large data centers of carriers and portal websites
Generally, load balancing is implemented in large data centers of carriers and portal websites. In this
scenario, one or two LB modules are installed on each stateful failover-capable distribution layer switch,
and VRRP is enabled on the LB modules for high reliability.
IP network
ISP1 router
LB
User1
Switch
User1 User1 User1 User1 User1
ISP1 ISP2
ISP2 router