Operation Manual - Auto Detecting
Quidway S3500 Series Ethernet Switches Chapter 2 Implementations of Auto Detect
Huawei Technologies Proprietary
2-5
# Configure an IP address for VLAN interface 1.
[Quidway B] vlan 1
[Quidway B-vlan1] port ethernet1/0/1
[Quidway B-vlan1] quit
[Quidway B] interface vlan-interface 1
[Quidway B-vlan-interface1] ip address 192.168.1.2 24
# Enable VRRP on VLAN interface 1 and set a virtual IP address.
[Quidway B-vlan-interface1] vrrp vrid 1 virtual-ip 192.168.1.10
# Set the backup group priority value of switch B to 110, and specify to decrease the
priority value by 20 when the result of detecting group 9 is unreachable.
[Quidway B-vlan-interface1] vrrp vrid 1 priority 110
[Quidway B-vlan-interface1] vrrp vrid 1 track detect-group 9 reduced 20
2) Configure Switch D as follows:
# Configure an IP address for VLAN interface 1.
<Quidway D> system-view
[Quidway D] vlan 1
[Quidway D-vlan1] port ethernet1/0/1
[Quidway D-vlan1] quit
[Quidway D] interface vlan-interface 1
[Quidway D-vlan-interface1] ip address 192.168.1.3 24
# Enable VRRP on VLAN interface 1 and set a virtual IP address.
[Quidway D-vlan-interface1] vrrp vrid 1 virtual-ip 192.168.1.3
# Set the backup group priority value of switch D to 100.
[Quidway D-vlan-interface1] vrrp vrid 1 priority 100
2.4 Implementations in VLAN Interface Backup
Interface backup is a function used to back up VLAN interfaces by using the auto detect
function. For two VLAN interfaces configured with the same destination device, you can
configure one of them to the secondary interface, which is enabled automatically when
the primary one fails, so as to ensure the connectivity. Auto detect is implemented as
follows:
z In normal situations, that is, the result of the detecting group is reachable, the
secondary VLAN interface is down and data is transmitted through the primary
VLAN interface.
z When the link between the primary VLAN interface and the destination operates
improperly, that is, the result of the detecting group is unreachable, the system
shuts down the primary VLAN interface and enables the secondary VLAN
interface.
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