3Com Switch 4800G 24-Port - Page 1086

1086 CHAPTER 87: VRRP CONFIGURATION
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CAUTION: You should configure this function before creating a standby group.
Otherwise, you cannot modify the mapping between the virtual IPv6 address and
the MAC address.
Creating Standby Group
and Configuring Virtual
IPv6 Address
You need to configure a virtual IPv6 address for a standby group when creating
the standby group. A VRRP standby group is created automatically when you
specify the first virtual IPv6 address for the standby group. If you specify a virtual
IPv6 address for the standby group later, the virtual IPv6 address is only added to
the virtual IPv6 address list of the VRRP standby group.
Configuration prerequisites
Before creating standby group and configuring virtual IPv6 address, you should
first configure the IPv6 address of the interface and ensure that the virtual IPv6
address to be configured is in the same network segment as the IPv6 address of
the interface.
Configuration procedure
Follow these steps to create standby group and configure its virtual IPv6 address:
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CAUTION:
■ The maximum number of standby groups on an interface and the maximum
number of virtual IPv6 addresses in a standby group vary by device.
■ A standby group is removed after you remove all the virtual IPv6 addresses in it.
In addition, configurations on that standby group no longer take effect.
To do… Use the command… Remarks
Enter system view system-view -
Configure the association
between virtual IPv6 address
and MAC address
vrrp ipv6 method
{ real-mac | virtual-mac }
Optional
The virtual MAC address of
the standby group is
associated with the virtual
IPv6 address by default.
To do… Use the command… Remarks
Enter system view system-view -
Enter the specified interface
view
interface interface-type
interface-number
-
Create standby group and
configure its virtual IPv6
address
vrrp ipv6 vrid
virtual-router-id virtual-ip
virtual-address [ link-local ]
Required
No standby group is created
by default.
The first virtual IPv6 address of
the standby group must be a
link local address. Only one
link local address is allowed in
a standby group, and must be
removed the last.