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High availability

 

 

 

  

 

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High availability configurations 

The HP 10GbE switches offer flexibility in implementing redundant configurations. This section discusses 

the Active-Active configuration.  

Active-Active configuration 

The following figure shows an example configuration, where two switches are used as VRRP routers in an 

active-active configuration. In this configuration, both switches respond to packets.  

 Active-Active high availability configuration  

 

Although this example shows only two switches, there is no limit on the number of switches used in a 
redundant configuration. It is possible to implement an active-active configuration across all the 

VRRP-capable switches in a LAN. 
Each VRRP-capable switch in an active-active configuration is autonomous. Switches in a virtual router 

need not be identically configured. 
In the scenario illustrated in the figure, traffic destined for IP address 10.0.1.1 is forwarded through the 

Layer 2 switch at the top of the drawing, and ingresses Switch A on port 20. Return traffic uses default 
gateway 1 (192.168.1.1). If the link between Switch A and the Layer 2 switch fails, Switch B becomes 

the Master because it has a higher priority. Traffic is forwarded to Switch B. Return traffic uses default 

gateway 2 (192.168.2.1), and is forwarded through the Layer 2 switch at the bottom of the drawing.  
To implement the active-active example, perform the following switch configuration.  

Task 1: Configure Switch A 

Configure ports. 

/cfg/l2/vlan 10                    (Select VLAN 10) 

>> VLAN 10# ena                    (Enable VLAN 10) 

>> VLAN 10# add 20                 (Add port 20 to VLAN 10) 

>> VLAN 10# .. 

>> Layer 2# vlan 20                (Select VLAN 20) 

>> VLAN 20# ena                    (Enable VLAN 20) 

>> VLAN 20# add 21                 (Add port 21 to VLAN 20)