Intel 480T User Manual page 163

C H A P T E R 9
Sales master,
Engineering standby
Sales
Enterprise Standby Router Protocol
The following commands are used to configure both VLAN Sales
switches. The assumption is that the inter-router backbone is
running OSPF, with other routed VLANs already properly
configured. Use similar commands to configure a switch on a
network running RIP. The primary requirement is that the IP
address for the VLAN(s) running ESRP must be identical. In this
scenario, the master is determined by the programmed MAC
address of the switch, because the number of active links for the
VLAN and the priority are identical to both switches.
The commands used to configure the VLAN Sales switches are as
follows:
create vlan sales
config sales add port 1-4
config sales ipaddr 10.1.2.3/24
enable ipforwarding
enable esrp sales
enable edp ports all
config ospf add vlan sales
enable ospf
Multiple VLANs Using Layer 2 Redundancy
The example shown in Figure 17 illustrates an ESRP configuration
that has multiple VLANs using layer 2 redundancy.
Sales
Sales - untagged link
Engineering - untagged link
Sales + Engineering - tagged link
Figure 17: ESRP example using layer 2 redundancy
Sales standby,
Engineering master
Sales +
Engineering
Engineering
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