2.4. Multiple Backups
The examples we have introduced so far were of the 1-to-1 cardinality; even in the mutual protection case, we had a pair of 1-to-1 configurations. VRRP supports 1-to-N redundancy cardinalities where N can be greater than 1. To illustrate the basic elements of such configurations, let us consider a case in which the R1 router is backed up by two routers, R2 and R3, without any load sharing. Figure 2-6 represents such a configuration.
Figure 2-6. A virtual router with multiple backups
In this configuration R1 is designated as the default router for all the hosts and the master of the virtual router V1. R2, R3 are pure redundant ...
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