This process is entirely transparent to the network hosts. However, in the event that Switch 1 fails, then Switch 2 will assume this responsibility. Based on this solution, Switch 1 will forward all packets sent to the 10.10.10.1 address. All hosts on VLAN 10 are configured with a default gateway address of 10.10.10.1. Because of the higher priority, Layer 3 Switch 1 is elected as the primary switch and Layer 3 Switch 2 is elected as the secondary switch. Switch 1 has been configured with a priority of 105, while Switch 2 is using the default priority of 100. Both switches are configured as part of the same HSRP group and share the IP address of the virtual gateway, which is 10.10.10.1. The IP address assigned to the Switch Virtual Interface (SVI) on Layer 3 Switch 1 is 10.10.10.2/24, and the IP address assigned to the SVI on Layer 3 Switch 2 is 10.10.10.3/24. Referencing Figure 1, HSRP is configured between the Layer 3 (Distribution Layer) switches, providing gateway redundancy for VLAN 10. Hot Standby Router Protocol (HSRP) Operation Figure 1 below illustrates the operation of HSRP in a network:įig. In the event that the primary gateway fails, the secondary gateway assumes the role of primary and forwards all packets sent to the virtual gateway IP address. While operational, the primary gateway forwards packets destined to the virtual gateway IP address of the HSRP group. We also have many CCNP level labs our in book 101 Labs – Cisco CCNP. You can learn HSRP troubleshootingin our other blog post.
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