Huawei Quidway S3700 Series Configuration Manual page 332

Quidway S3700 Series Ethernet Switches
Configuration Guide - Reliability
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Issue 01 (2011-10-26)
CAUTION
l When configuring VRRP and static ARP simultaneously on the S3700, do not use
the IP addresses in the static ARP entries as the virtual IP addresses of VRRP
groups. Otherwise, incorrect host routes are generated, which affects forwarding
between devices.
l The virtual MAC address of a VRRP backup group cannot be configured as a static
MAC address or blackhole MAC address.
l Do not create VRRP groups on the VLANIF interfaces corresponding to super
VLANs because the configuration degrades the system performance.
For VRRP6, run the following commands:
1. Run:
system-view
The system view is displayed.
2. Run:
interface interface-type interface-number
The interface view is displayed.
3. Run:
vrrp6 vrid virtual-router-id virtual-ip virtual-ipv6-address [ link-
local ]
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 switch 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.
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7 VRRP and VRRP6 Configuration
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