© Copyright Lenovo 2017
Chapter 4: Configuration Commands
557
Virtual Router Group Configuration
Virtual
Router
Group
commands
are
used
for
associating
all
virtual
routers
into
a
single
logical
virtual
router,
which
forces
all
virtual
routers
on
the
G8264CS
to
either
be
master
or
backup
as
a
group.
A
virtual
router
is
defined
by
its
virtual
router
ID
and
an
IP
address.
On
each
VRRP
‐
capable
routing
device
participating
in
redundancy
for
this
virtual
router,
a
virtual
router
will
be
configured
to
share
the
same
virtual
router
ID
and
IP
address.
Note:
This
option
is
required
to
be
configured
only
when
using
at
least
two
G8264CSs
in
a
hot
‐
standby
failover
configuration,
where
only
one
switch
is
active
at
any
time.
Table 320.
VRRP
Virtual
Router
Group
Configuration
Options
Command Syntax and Usage
group
advertisement
<1
‐
255>
Defines
the
time
interval
between
VRRP
master
advertisements.
This
can
be
any
integer
between
1
and
255
seconds.
The
default
is
1
.
Command
mode:
Router
VRRP
[no]
group
enable
Enables
or
disables
the
virtual
router
group.
Command
mode:
Router
VRRP
[no]
group
fast
advertise
Enables
or
disables
Fast
Advertisements.
When
enabled,
the
VRRP
master
advertisements
interval
is
calculated
in
units
of
centiseconds,
instead
of
seconds.
For
example,
if
adver
is
set
to
1
and
fadver
is
enabled,
master
advertisements
are
sent
every
10
miliseconds.
When
you
disable
fast
advertisement,
the
advertisement
interval
is
set
to
the
default
value
of
1
second.
To
support
Fast
Advertisements,
set
the
interval
between
20
‐
100
centiseconds.
Command
mode:
Router
VRRP
group
interface
<interface
number
(1
‐
126)>
Selects
a
switch
IP
interface.
The
default
switch
IP
interface
number
is
1
.
Command
mode:
Router
VRRP
group
preempt
delay
time
<0
‐
255>
Configures
the
preempt
delay
interval
(in
seconds).
This
timer
is
configured
on
the
virtual
router
group
and
prevents
the
switch
from
transitioning
back
to
Master
state
until
the
preempt
delay
interval
has
expired.
Ensure
that
the
interval
is
long
enough
for
OSPF
or
other
routing
protocols
to
converge.
The
default
value
is
0
seconds.
Command
mode:
Router
VRRP
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