User guide

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The ESRP HA option is useful if you are using dual-homed network interface cards
(NICs) for server farms, and in conjunction with high availability server load balancing
(SLB) configurations, as shown in Figure 10-6.
Figure 10-6: ESRP host attach
Other applications allow lower cost redundant routing configurations, because hosts
can be directly attached to the switch involved with ESRP. The ESRP HA feature is used
only on switches and I/O modules that have the “i” series chipset. It also requires at
least one link between the master and standby ESRP switch for carrying traffic and to
exchange ESRP hello packets.
ESRP D
OMAINS
ESRP Domains is an optional ESRP configuration that allows you to configure multiple
VLANs under the control of a single instance of the ESRP protocol. By grouping
multiple VLANs under one ESRp group, the ESRP protocol can scale to provide
protection to large numbers of VLANs. All VLANs within an ESRP group
simultaneously share the same active and standby router and failover. The ESRP group
feature is used only on switches and I/O modules that have the “i” series chipset.
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OSPF/BGP4