HP 5500 Ei 5500 Si Switch Series Configuration Guide

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from hosts so that the hosts in the internal network can learn the mapping between the IP address and the 
MAC address. 
The following types of MAC addresses are available to be mapped to the virtual IP address of a VRRP 
group: 
•  Virtual MAC to virtual IP mapping —By default, a virtual MAC address is automatically created for 
a VRRP group when the VRRP group is created, and the virtual IP address of the VRRP group is 
mapped to the virtual MAC address. When such a mapping is adopted, the hosts...

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Configuration guidelines 
•  When VRRP is operating in standard protocol mode, the virtual IP address of a VRRP group can be 
either an unused IP address on the segment where the VRRP group resides or the IP address of an 
interface on a router in the VRRP group. In the latt er case, the router is called the IP address owner.  
•   When a router is the IP address owner in a VRRP group, HP recommends you not to use the IP 
address of the interface (virtual IP address of the VRRP group) to establish...

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Configuring router priority, preemptive mode and tracking 
function 
Configuration guidelines 
•  The running priority of an IP address owner is always 255 and you do not need to configure it. An 
IP address owner always operates in preemptive mode. 
•   If you configure an interface to be tracked or a trac k entry to be monitored on a router that is the IP 
address owner in a VRRP group, the configuration does not take effect. If the router is not the IP 
address owner in the VRRP group later, the...

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Configuring VF tracking 
Configuration guidelines 
•  You can configure the VF tracking function when VRRP is operating in either standard protocol 
mode or load balancing mode. However, the VF trac king function is effective only when VRRP is 
operating in load balancing mode. 
•   By default, the weight of a VF is 255, and its lower limit of failure is 10. 
•   I f  the  weig ht of  a VF  owner  i s  hig her  than or  e qu al  to  the  l ower  l i mi t of  fai l u re, the  p riori t y of  the  V...

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Configuring VRRP packet attributes 
Configuration guidelines 
•  You might configure different authentication modes and authentication keys for the VRRP groups on 
an interface. However, the members of the same VRRP group must use the same authentication 
mode and authentication key. 
•   Excessive traffic might cause a backup to trigger a ch ange of its status because the backup does not 
receive any VRRP advertisements for a specified period of time. To solve this problem, prolong the 
time...

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Step Command Remarks 
1.  Enter system view. 
system-view N/A 
2.  Enable the trap function for 
VRRP.  snmp-agent trap enable vrrp
 
[ authfailure | newmaster ]  Optional. 
Enabled by default. 
 
For more information about the 
snmp-agent trap enable vrrp command, see the snmp-agent trap enable  
command in  Network Management and Monitoring Command Reference . 
Displaying and maintaining VRRP for IPv4  
Task Command Remarks 
Display VRRP group status. display
 vrrp  [ verbose  ] [ interface...

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Specifying the type of MAC addresses mapped to virtual IPv6 
addresses 
After you specify the type of MAC addresses mapped to the virtual IPv6 address of VRRP groups and 
create a VRRP group, the master in the VRRP group uses the specified type of MAC address as the source 
MAC address for sending packets and uses the specified type of MAC address to answer ND requests 
from hosts so that the hosts in the internal network can learn the mapping between the IPv6 address and 
the MAC address.  
The...

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OSPFv3 on the interface. For more information about ospfv3 area  command, see Layer 3—IP 
Routing Command Reference.   
•   When VRRP is operating in load balancing mode, the virtual IPv6 address of a VRRP group cannot 
be the same as the IPv6 address of any interface in the VRRP group. In other words, a VRRP group 
does not have an IP address owner in load balancing mode. 
•   A VRRP group is removed after you remove all the virtual IPv6 addresses in it. In addition, 
configurations on that VRRP...

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•  If the state of a tracked interface  changes from down or removed to up, the priority of the router that 
owns the interface is automatically restored. 
•   If the state of a track entry changes from negative or invalid to positive, the priority of the router 
where the track entry is configured is automatically restored. 
Configuration prerequisites 
Before you configure router priority, preemptive mode and tracking function, create a VRRP group and 
configure its virtual IPv6 address....

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Configuration prerequisites 
Before you configure the VF tracking function, create a VRRP group and configure a virtual IPv6 address 
for it. 
Configuration procedure 
VRRP operates in load balancing mode. Assume that you have configured the VF tracking function to 
monitor a track entry and specified the value by which the weight decreases. When the status of the track 
entry becomes negative, the weight values of all VFs on the router decrease by the specified value. When 
the status of the track...