HP 6125XLG R2306-HP 6125XLG Blade Switch High Availability Configuration Guide - Page 62

Configuration procedure, Configuring the IPv6 VRRP advertisement interval, Configuration guidelines

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• When the weight of a VF owner is higher than or equal to the lower limit of failure, its priority is always 255 and does not change with the weight. To guarantee that an LVF can take over the VF owner as the AVF when the upstream link of the VF owner fails, the reduced weight for the VF owner must be higher than 245 so the weight of the VF owner can drop below the lower limit of failure. Configuration procedure To configure VF tracking: Step 1. Enter system view. Command system-view 2. Enter interface view. interface interface-type interface-number 3. Configure the VFs in a VRRP group to monitor a track entry vrrp ipv6 vrid virtual-router-id and configure the reduced weight track track-entry-number weight. [ reduced weight-reduced ] Remarks N/A N/A By default, no track entry is specified. Configuring the IPv6 VRRP advertisement interval This section describes how to configure the IPv6 VRRP advertisement interval. Configuration guidelines • The routers in an IPv6 VRRP group can have different intervals for sending VRRP advertisements. The master in the VRRP group sends VRRP advertisements at the specified interval and carries the interval attribute in the advertisements. After a backup receives the advertisement, it records the interval in the advertisement. If the backup does not receive a new VRRP advertisement from the master when the timer (3 x recorded interval + Skew_Time) expires, it regards the master as failed and takes over as the new master. • A high volume of network traffic might cause a backup to fail to receive VRRP advertisements from the master within the specified time, resulting in an unexpected master switchover. To solve this problem, configure a larger interval. Configuration procedure To configure the IPv6 VRRP advertisement interval: Step 1. Enter system view. 2. Enter interface view. 3. Configure the IPv6 VRRP advertisement interval. Command system-view interface interface-type interface-number vrrp ipv6 vrid virtual-router-id timer advertise adver-interval Remarks N/A N/A The default setting is 100 centiseconds. To maintain system stability, HP recommends that you set the VRRP advertisement interval to be no less than 100 centiseconds. 57

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57
•
When the weight of a VF owner is higher than or equal to the lower limit of failure, its priority is
always 255 and does not change with the weight. To guarantee that an LVF can take over the VF
owner as the AVF when the upstream link of the VF owner fails, the reduced weight for the VF owner
must be higher than 245 so the weight of the VF owner can drop below the lower limit of failure.
Configuration procedure
To configure VF tracking:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter interface view.
interface
interface-type
interface-number
N/A
3.
Configure the VFs in a VRRP
group to monitor a track entry
and configure the reduced
weight.
vrrp ipv6 vrid
virtual-router-id
weight
track
track-entry-number
[
reduced
weight-reduced
]
By default, no track entry is
specified.
Configuring the IPv6 VRRP advertisement interval
This section describes how to configure the IPv6 VRRP advertisement interval.
Configuration guidelines
•
The routers in an IPv6 VRRP group can have different intervals for sending VRRP advertisements. The
master in the VRRP group sends VRRP advertisements at the specified interval and carries the
interval attribute in the advertisements. After a backup receives the advertisement, it records the
interval in the advertisement. If the backup does not receive a new VRRP advertisement from the
master when the timer (3 x recorded interval + Skew_Time) expires, it regards the master as failed
and takes over as the new master.
•
A high volume of network traffic might cause a backup to fail to receive VRRP advertisements from
the master within the specified time, resulting in an unexpected master switchover. To solve this
problem, configure a larger interval.
Configuration procedure
To configure the IPv6 VRRP advertisement interval:
Step
Command
Remarks
1.
Enter system view.
system-view
N/A
2.
Enter interface view.
interface
interface-type
interface-number
N/A
3.
Configure the IPv6 VRRP
advertisement interval.
vrrp ipv6 vrid
virtual-router-id
timer
advertise
adver-interval
The default setting is 100
centiseconds.
To maintain system stability, HP
recommends that you set the
VRRP advertisement interval to
be no less than 100
centiseconds.