Configuring Authentication Type And Authentication Key - Huawei Quidway S6500 Series Operation Manual

Operation Manual - Reliability
Quidway S6500 Series Ethernet Switches
has not received the packets from the master switch punctually, it will become the
master switch. However, the failure of backup to receive the packets may be due to
network congestion, instead of the malfunction of the master switch. With the
configuration of delay time, the backup receives the packet after a while. The delay
settings can thereby avoid a frequent change of status.
Perform the following configuration in VLAN interface view.
Table 1-5 Configure preemption and delay for a switch within a virtual router
Enable the preemption mode and
configure a period of delay
Disable the preemption mode
The delay time ranges from 0 to 255, in seconds. By default, the preemption mode is
preemption with a delay of 0 second.
Note:
If preemption mode is cancelled, the delay time will automatically become 0 second.

1.2.6 Configuring Authentication Type and Authentication Key

VRRP provides following authentication types:
simple: Simple character authentication
md5: MD5 authentication
In a network under possible security threat, the authentication type can be set to
simple. Then the switch adds the authentication key into the VRRP packets before
transmitting it. The receiver will compare the authentication key of the packet with the
locally configured one. If they are the same, the packet will be taken as a true and
legal one. Otherwise it will be regarded as an illegal packet and be discarded. In this
case, a simple authentication key should not exceed eight characters.
In a totally unsafe network, the authentication type can be set to md5. The switch will
use the authentication type and MD5 algorithm provided by the Authentication Header
to authenticate the VRRP packets. In this case, an authentication key should not
exceed eight characters.
Operation
Huawei Technologies Proprietary
1-6
Chapter 1 VRRP Configuration
Command
vrrp vrid virtual-router-ID preempt-mode
[ timer delay delay-value ]
undo vrrp vrid
preempt-mode
virtual-router-ID