You configured HSRP on R1 and R2, each router having its interface FastEthernet0/0 on subnet 10.1.1.0/24. But something isn't right. You issued the "show standby brief" command on R1 and R2 as
![Apr 28 10:15:43.341: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch: Hot Standby Router Protocol - HSRP Apr 28 10:15:43.341: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch: Hot Standby Router Protocol - HSRP](http://2.bp.blogspot.com/-mXDx0_a8rrU/VUu8P7BM_4I/AAAAAAAABuY/RFHIEgqeozk/s1600/screenshot.png)
Apr 28 10:15:43.341: %CDP-4-NATIVE_VLAN_MISMATCH: Native VLAN mismatch: Hot Standby Router Protocol - HSRP
![HSRP Configuration on Cisco Router Using Cisco Packet Tracer | Learn Linux CCNA CEH IPv6 Cyber-Security Online HSRP Configuration on Cisco Router Using Cisco Packet Tracer | Learn Linux CCNA CEH IPv6 Cyber-Security Online](https://linuxtiwary.files.wordpress.com/2018/02/fhrp-lab.png?w=614&h=307)