H3C S7500E Series Ethernet Switches Operation Manual

Operation Manual – HA
H3C S7500E Series Ethernet Switches Chapter 1 VRRP Configuration
1-6
z IP Address: Virtual IP address entry of the standby group. The allowed number is
given by the Count IP Addrs field.
z Authentication Data: Authentication key. Currently, this field is used only for simple
authentication and is 0 for any other authentication modes.
II. IPv6-based VRRP packet format
Version Type Virtual Rtr ID Priority Count IPv6 Addrs
Auth Type Adver Int Checksum
IPv6 address 1
Authentication data 1
Authentication data 2
IPv6 address n
0 7 15 23 313
Figure 1-4 IPv6-based VRRP packet format
As shown in
Figure 1-4, an IPv6-based VRRP packet consists of the following fields:
z Version: Version number of the protocol, 3 for VRRPv3.
z Type: Type of the VRRP packet. Only one VRRP packet type is present, that is,
VRRP advertisement, which is represented by 1.
z Virtual Rtr ID (VRID): Number of the virtual router, that is, number of the standby
group. It ranges from 1 to 255.
z Priority: Priority of the switch in the standby group, in the range 0 to 255. A greater
value represents a higher priority.
z Count IPv6 Addrs: Number of virtual IPv6 addresses for the standby group. A
standby group can have multiple virtual IPv6 addresses.
z Auth Type: Authentication type. 0 means no authentication, 1 means simple
authentication. VRRPv3 does not support MD5 authentication.
z Adver Int: Interval for sending advertisement packets, in centiseconds. The default
is 100.
z Checksum: 16-bit checksum for validating the data in VRRPv3 packets.
z IPv6 Address: Virtual IPv6 address entry of the standby group. The allowed
number is given by the Count IPv6 Addrs field.