vrrp arp send-mode simple

Function

The vrrp arp send-mode simple command configures the master on a QinQ termination sub-interface to send gratuitous ARP packets to the VLAN specified by the outer VLAN tag and the first VLAN in the VLAN range specified by the inner VLAN tag.

The undo vrrp arp send-mode simple command restores the default setting.

By default, the master on a QinQ termination sub-interface sends gratuitous ARP packets to the VLAN specified by the outer VLAN tag and all VLANs in the VLAN range specified by the inner VLAN tag.

Only the S5720-HI, S5730-HI, S5731-H, S5731-S, S5731S-H, S5731S-S, S5732-H, S6720-HI, S6730-H, S6730S-H, S6730-S, and S6730S-S support this command.

Format

vrrp arp send-mode simple

undo vrrp arp send-mode simple

Parameters

None

Views

VE sub-interface view

Default Level

2: Configuration level

Usage Guidelines

Usage Scenario

When VRRP is deployed on a QinQ termination sub-interface, the system sends double-tagged ARP packets. If the inner VLAN tag specifies a VLAN range, the system sends ARP packets to all the VLANs in the VLAN range specified by the inner VLAN tag. This ensures that MAC address entries on the downstream device are updated immediately, but causes a heavy burden. The vrrp arp send-mode simple command configures the master on a QinQ termination sub-interface to send gratuitous ARP packets to the VLAN specified by the outer VLAN tag and the first VLAN in the VLAN range specified by the inner VLAN tag. This prevents excess gratuitous ARP packets from affecting the system.

The vrrp arp send-mode simple command takes effect in VLANs specified only by the inner VLAN tag but not VLANs specified by the outer VLAN tag. For example, the VLAN ID in the outer tag ranges from 1 to 10 and the VLAN ID in the inner tag ranges from 1 to 10. After the vrrp arp send-mode simple command is run, gratuitous ARP packets are transmitted in only VLAN 1 (specified by the inner VLAn tag). A total of 10 gratuitous ARP packets (10 outer VLAN IDs x 1 inner VLAN ID) are sent.

Precautions

The vrrp arp send-mode simple command must be executed on a QinQ termination sub-interface.

Example

# Configure VE sub-interface Virtual-Ethernet0/0/2.1 to send gratuitous ARP packets in VLAN 3.

<HUAWEI> system-view
[HUAWEI] interface virtual-ethernet0/0/2
[HUAWEI-Virtual-Ethernet0/0/2] ve-group 1 l3-access
[HUAWEI-Virtual-Ethernet0/0/2] quit
[HUAWEI] interface virtual-ethernet0/0/2.1
[HUAWEI-Virtual-Ethernet0/0/2.1] qinq termination pe-vid 5 ce-vid 3 to 20
[HUAWEI-Virtual-Ethernet0/0/2.1] vrrp vrid 1 virtual-ip 10.1.1.1
[HUAWEI-Virtual-Ethernet0/0/2.1] vrrp arp send-mode simple