Configuring Priorities For Interfaces Where A Backup Group Is Created - Huawei NetEngine80E Configuration Manual - Reliability

HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
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4.2.3 Configuring Priorities for Interfaces Where a Backup Group
Is Created
Configuring priorities for interfaces on which a VRRP backup group is created allows the VRRP
status on an interface to become Master. The master device forwards network traffic.
Issue 02 (2011-09-10)
A VRRP6 backup group is configured and a virtual IPv6 address is assigned to the
VRRP6 backup group.
NOTE
l Virtual IPv6 addresses of VRRP6 backup groups must be different.
l Virtual router IDs on both ends of a VRRP6 backup group must be the same.
l Virtual router IDs on different interfaces can be the same.
link-local indicates the virtual IPv6 address assigned to a VRRP6 backup group is a
link local address. The link local address is an IPv6 address with the prefix being FE80.
The link local address takes effect only on a local link because it is used by neighboring
nodes along the link to communicate with each other. An IPv6 router never forwards
packets carrying link local addresses. To assign a virtual IPv6 address to a VRRP6
backup group, ensure that the first virtual IPv6 address is a link local address.
After the first virtual IPv6 address is assigned to a VRRP6 backup group, the system
creates the VRRP6 backup group. When another virtual IPv6 address is assigned to
the VRRP6 backup group, the system adds the virtual IPv6 address to the virtual IPv6
address list of the VRRP6 backup group.
In load balancing mode, you need to repeat this step to configure multiple VRRP6
backup groups. At least two VRRP6 backup groups need to be created and each
VRRP6 backup group is identified by a distinct VRID. In addition, virtual IPv6
addresses of VRRP6 backup groups must be different.
If the IP address owner is configured in the IPv6 VRRP configuration, configure
VRRP on the IP address owner first, and then on the peer device; otherwise, the IP
addresses may conflict. If IP address conflict occurs, perform the following
operations:
– Disable the IPv6 address conflict detection.
(1) Before configuring the IP address owner, run the
value command with the value being 0 to disable the IPv6 address conflict
detection.
(2) Configure the IP address owner.
(3) Run the ipv6 nd dad attempts
enable the IPv6 address conflict detect.
– Restart the interface.
(1) Run the shutdown
the interface.
(2) Run the undo shutdown
enable the interface.
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value command with the value being 1 to
command in the view of the IP address owner to shut down
command in the view of the IP address owner to
4 VRRP Configuration
ipv6 nd dad attempts
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