Licensing Requirements and Limitations for VRRP

Involved Network Elements

Other network elements are required to support VRRP functions.

Licensing Requirements

VRRP is a basic feature of a switch and is not under license control.

Feature Support in V200R019C10

All models of S2720, S5700, and S6700 series switches support VRRP.

For details about software mappings, visit Hardware Query Tool and search for the desired product model.

Feature Limitations

• In V200R003 and earlier versions, VRRP can be configured only on the VLANIF interface.

  Starting in V200R005, VRRP can be configured on the VLANIF interface and Layer 3 Ethernet interface.

  Starting in V200R009, VRRP can be configured on the VLANIF interface, Layer 3 Ethernet interface, and sub-interface.

• Starting in V200R010, VRRP6 can be configured on Dot1q termination sub-interfaces or QinQ termination sub-interfaces.
• Switches of a VRRP group must be configured with the same VRID.
• 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.
• If each switch in the VRRP group uses a different VRRP version, VRRP packets may fail to be transmitted. When a VRRPv3-enabled switch and a VRRPv2-enabled switch belong to the same VRRP group, run the vrrp version-3 send-packet-mode { v2-only | v2v3-both } command to configure the switch to send VRRPv2 packets.
• If both VRRP and static ARP are configured on a VLANIF interface, a Dot1q termination sub-interface, a QinQ termination sub-interface, or an Ethernet 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.
• The virtual MAC address of a VRRP group cannot be configured as a static or blackhole MAC address.
• A maximum of 24 VRRP groups (sum of VRRP4 and VRRP6 VRRP groups) can be configured on the S3700-EI, and a maximum of 64 VRRP groups (sum of VRRP4 and VRRP6 VRRP groups) can be configured on other models. Starting in V200R003, the set vrrp max-group-number max-group-number command can be used to set the maximum number of allowed VRRP groups (sum of VRRP4 and VRRP6 VRRP groups).
• The ARP aging probe packets sent by a VRRP device use an interface IP address, instead of a virtual IP address, as the source IP address.