HP 6125G HP 6125G & 6125G/XG Blade Switches High Availability Configur - Page 168
VRRP with multiple VLANs configuration example, Network requirements
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# When interface VLAN-interface 3 on Switch A is not available, the detailed information about VRRP group 1 on Switch B is displayed. [SwitchB-Vlan-interface2] display vrrp ipv6 verbose IPv6 Standby Information: Run Mode : Standard Run Method : Virtual MAC Total number of virtual routers : 1 Interface Vlan-interface2 VRID : 1 Adver Timer : 400 Admin Status : Up State : Master Config Pri : 100 Running Pri : 100 Preempt Mode : Yes Delay Time : 5 Auth Type : Simple Key : ****** Virtual IP : FE80::10 1::10 Virtual MAC : 0000-5e00-0201 Master IP : FE80::2 The output shows that when VLAN-interface 3 on Switch A is not available, the priority of Switch A is reduced to 80 and Switch A becomes the backup. Switch B becomes the master and packets sent from Host A to Host B are forwarded by Switch B. VRRP with multiple VLANs configuration example Network requirements • Switch A and Switch B belong to both VRRP group 1 and VRRP group 2. The virtual IPv6 addresses of VRRP group 1 are 1::10/64 and FE80::10, and those of VRRP group 2 are 2::10/64 and FE90::10. • Hosts in VLAN 2 learn 1::10/64 as their default gateway and hosts in VLAN 3 learn 2::10/64 as their default gateway through RA messages sent by the switches. • In VRRP group 1, Switch A has a higher priority than Switch B. In VRRP group 2, Switch B has a higher priority than Switch A. In this case, hosts in VLAN 2 and VLAN 3 can communicate with external networks through Switch A and Switch B, respectively, and when Switch A or Switch B fails, the hosts can use the other switch to communicate with external networks to avoid communication interruption. 161