Vrrp Benefits; Vrrp Implementation - Dell S6100 Configuration Manual

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Figure 156. Basic VRRP Configuration

VRRP Benefits

With VRRP configured on a network, end-station connectivity to the network is not subject to a single point-of-failure. End-station

connections to the network are redundant and are not dependent on internal gateway protocol (IGP) protocols to converge or update

routing tables.

In conjunction with Virtual Link Trunking (VLT), you can configure optimized forwarding with virtual router redundancy protocol (VRRP).

In a VLT environment, VRRP configuration acts as active-active and if route is not present in any of the VRRP nodes, the

packet to the destination is dropped on that VRRP node.

Within a single VRRP group, up to 12 virtual IP addresses are supported.

Virtual IP addresses can belong to the primary or secondary IP address' subnet configured on the interface. You can ping all the virtual IP

addresses configured on the Master VRRP router from anywhere in the local subnet.

Z-Series supports a total of 255 VRRP groups on a switch. The total number of VRRP groups per system should be less than 512.

The following recommendations shown may vary depending on various factors like address resolution protocol (ARP) broadcasts, IP

broadcasts, or spanning tree protocol (STP) before changing the advertisement interval. When the number of packets processed by

RP2/CP/FP processor increases or decreases based on the dynamics of the network, the advertisement intervals may increase or

decrease accordingly.

Virtual Router Redundancy Protocol (VRRP)