Configuration Notes - Huawei AR530 Series Configuration Manual

Huawei AR530&AR550 Series Industrial Switch Routers
Configuration Guide - Reliability
Scenario
Configure association
between VRRP and
BFD/NQA/routing to
monitor the uplink
status

6.5 Configuration Notes

This section provides the notes about configuring VRRP.
When configuring VRRP on the industrial switch router, pay attention to the following points:
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Issue 01 (2014-11-30)
Description
Because VRRP cannot detect faults
on the uplink of a VRRP group,
services may be interrupted.
Association between VRRP and
BFD/NQA/routing allows the device
to detect faults on the uplink of the
master. When the uplink of the master
fails, BFD/NQA/routing rapidly
detects the fault and instructs the
master to adjust its priority. This
triggers an active/standby switchover
and ensures proper traffic
forwarding.
BFD implements millisecond-level
detection. Association between
VRRP and BFD provides a rapid
active/standby switchover.
NQA technology collects statistics on
the delay, jitter, and packet loss ratio.
You can configure the percentage of
failed NQA test instances and NQA
association to trigger an active/
standby switchover when the uplink
is unstable.
VRRP groups must use different virtual IP addresses. The virtual IP address of a VRRP
group must be on the same network segment as the IP address of the interface where the
VRRP group is configured.
The devices in a VRRP group must be configured with the same VRID.
Different interfaces can be bound to the same VRRP group.
If both VRRP and static ARP are configured on a Dot1q termination sub-interface, QinQ
termination sub-interface, or VLANIF interface on a device, an IP address mapped to a
static ARP entry cannot be used as a virtual IP address. If a VRRP virtual IP address is an
IP address mapped to a static ARP entry on the device, the device generates incorrect host
routes, affecting traffic forwarding.
If devices in a VRRP group use different VRRP versions, VRRP Advertisement packets
may fail to be forwarded.
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6 VRRP Configuration
Task
6.7.2.3 Configuring
Association Between
VRRP and BFD to
Monitor the Uplink
Status
6.7.2.4 Configuring
Association Between
VRRP and NQA to
Monitor the Uplink
Status
6.7.2.5 Configuring
Association Between
VRRP and Routing to
Monitor the Uplink
Status
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